
Hydroponics Daily
367 episodes — Page 2 of 8

Ep 326The International Space Station has a big Hydroponic Headache!
Dr. Russell Sharp discusses recent research (published in npj Microgravity) showing that lettuce grown on the International Space Station contains significantly less calcium and magnesium and lower antioxidant and protective compounds than Earth-grown counterparts. These nutrient changes matter for astronauts who already face bone loss, radiation stress, and digestive changes in space. The episode explores possible causes (microgravity, humidity, lighting, fertiliser), solutions such as biofortification, bioengineering, and choosing flavonoid-rich or seed/legume crops like soybeans, and outlines future research directions for producing nutritionally adequate crops on long-duration space missions. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/ Tim Peake, Helen Sharman, Neil Armstrong, Sally Ride, Yuri Gagarin, John Glenn, Buzz Aldrin, Valentina Tereshkova, Blue Origin, SpaceX, Elon Mush, Jeff Bezos, Heinlein, Isaac Asimov, Arthur C. Clarke, Star Trek

Ep 325Growing Edamame Indoors: Japan's Hydroponic Breakthrough
Dr. Russell Shaw explores recent Japanese research showing that edamame can be successfully grown hydroponically under LED lighting, yielding stable, high-quality crops independent of season. The indoor methods produced stronger plants, higher sugar and isoflavone levels, and suggest a way to grow nutrient-dense, protein-rich legumes in vertical farms—opening new opportunities beyond typical leafy greens. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/ Professor Toshio Sano from the Faculty of Bioscience and Applied Chemistry at Hosei University University of Tokyo Wagamamas Nobu Matsuhisa Gordon Ramsay, Jamie Oliver, Heston Blumenthal, Mary Berry, Nigella Lawson, Tom Kerridge, and Rick Stein
Ep 324Hydrofarm: A Reality Check for the Hydroponics Industry
Dr. Russell Sharp breaks down Hydrofarm’s latest results, falling sales, large write-downs and the company’s role as a barometer for the hydroponics and legal cannabis markets. The episode explores Hydrofarm’s brand portfolio, financial challenges, restructuring efforts and what the company’s struggles might mean for the wider hydroponic sector going forward. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/ nasdaq, new york stock exchange, london stock exchange

Ep 323Titanium & Plant Health: Miracle Micronutrient or Risky Gamble?
Dr. Russell Sharp explores the role of titanium in plant health; what it is, how it’s used (chelated salts, titanium dioxide nanoparticles, foliar and root applications), and why it’s attracting interest in the biostimulant world. Although titanium is not an essential nutrient, low doses have sometimes boosted chlorophyll, photosynthesis, nutrient uptake and stress tolerance; effects depend strongly on species, particle form, application method and the plant’s iron and nutrient status. However, titanium shows a hormetic response: low doses can help but higher doses cause chlorosis, necrosis and growth suppression, with no clear safe thresholds—so the episode warns against using titanium fertilizers and recommends correcting core nutrient imbalances first. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/ Robocop, suncream, sunscreen, hip replacements, SR-71 Blackbird, Lockheed A-12 archangel, William Gregor, mannacan,

Ep 322Direct Air Capture for CO2 in Hydroponics
Dr. Russell Sharp explores the promise of direct air capture (DAC) as a way to enrich CO2 for hydroponic and greenhouse crops without burning fossil fuels. He discusses a Japanese company (Seibu Gaiken) running successful trials that showed average yield increases of about 20%, and compares DAC to other CO2 sources like breweries and biogas. The episode highlights key caveats: DAC’s climate benefit depends on clean energy, units are currently large-scale, and they change heat management compared with gas burners. Dr. Sharp invites listener experience and feedback on whether vertical farms or large greenhouses will adopt this technology first. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Ep 321Lamb's Lettuce: Hydroponic Gold, not just for Winter
Dr. Russell Sharp explores lamb's lettuce (Valerianella locusta) as an underrated hydroponic crop, highlighting its unique botanical lineage, high nutrient content, and suitability for cold or unheated systems where traditional lettuce and other warm crops struggle. The episode covers practical benefits—reduced soil contamination, potential premium market value, and successful DWC trials—as well as challenges like delicate leaves, fungal susceptibility, bolting in heat, and the need for optimized nutrition and handling. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/ Ersatz crops Tim Davie Deborah Turness Samir Shah Mary Keen
Ep 320Eli Lilly's $3 BILLION Greenhouse Bet: Is Hydroponics the Next Pharma Frontier?
Host Dr. Russell Sharp discusses Eli Lilly's recent purchase of a greenhouse site in Katwijk, Netherlands, and explores possible links to botanical sourcing and GLP‑1 weight‑loss drugs. He outlines how the $3 billion investment raises questions about future use, including pharmaceutical manufacturing, botanical ingredients, and impacts on horticulture. The episode also touches on historical examples of plant‑derived medicines, the Nagoya Protocol on sharing benefits from genetic resources, and the wider implications for food demand and greenhouse agriculture. Tune in to hear the latest developments and what to watch for next. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/ Wegovy (also semaglutide, approved for weight loss), Mounjaro and Zepbound (tirzepatide, a dual-action drug), and Saxenda (liraglutide) Type 2 diabetes Whoopi Goldberg, Charles Barkley, Amy Schumer, Serena Williams, Oprah Winfrey, and Elon Musk
Ep 319Cold Roots, Chilled Yields: Diagnosing Root Cold Stress in Hydroponics
Dr. Russell Sharp discusses cold root stress in hydroponics, how it causes desiccation and nutrient uptake problems, and practical mitigations like raising plants or grafting. He reviews new research showing increased plant sterols can boost cold tolerance in tomatoes, and teases a follow-up story about Eli Lilly buying a Dutch greenhouse. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/ Univerity of Barcelona
Ep 318Bankruptcy in Soilless Farming: Clean Greens and Growy Singapore Fall
Dr. Russell Sharp reviews two recent failures in soilless agriculture: Swiss aeroponics firm CleanGreens went bankrupt after a promised CHF 50M investment failed to materialize, and Growy Singapore—an 8,000 m² vertical farm taken over from a US operator—entered liquidation within a year due to high costs and insufficient local investment despite government support. The episode looks at what went wrong, the impact on employees and technology, and notes Growy's Amsterdam site remains operational. Tune in for a concise breakdown and a preview of tomorrow’s episode on a cold-tolerant tomato variety. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Ep 317Can Norway Grow Avocados? Inside the Hydroponic Experiment
Dr. Russell Sharp examines whether warm‑climate perennials like avocados can be grown economically indoors in cold countries. He reviews a Norwegian research trial using waste heat, cheap hydroelectric power, LED greenhouses, and micropropagation to produce local avocados, and discusses pollination, growth timelines, and energy costs. The episode weighs the trade-offs between long production times and local quality/supply benefits, shares practical hydroponic lessons, and invites listeners to share unusual crops they’ve grown. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/ Yara Oslo Jonas Gahr Støre Erna Solberg Jens Stoltenberg Erling Haaland Martin Ødegaard Ole Gunnar Solskjær John Arne Riise Svalbard Agrinos Nobel Prize Jo Nesbø Edvard Munch

Ep 316Fertilizer Falsehoods: The Myth of 90+ Elements in a Fertiliser
Dr. Russell Sharp exposes claims that fertilizers contain 60–90+ elements, showing many listed elements are impossible, radioactive, or toxic and explaining that plants only need a small set of essential nutrients. He evaluates sea-mineral and rock dust products, warns listeners to question extravagant element lists, and urges asking manufacturers to provide an exact element breakdown. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/
Ep 315Larry Ellison’s $500M Hydroponic Dream: Sensai Farms’ High-Tech Failures
Dr. Russell Sharp examines Sensai Farms, Larry Ellison’s high‑profile hydroponic project in Hawaii, funded with hundreds of millions but hampered by cost overruns, design flaws, failing AI and robots, and unreliable power systems. The episode covers how these problems drove up production costs, affected local access to affordable produce, and forced Sensai to pivot from large‑scale growing to licensing its technology, raising questions about tech solutions in agriculture. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/ Tony Blair Sadiq Khan Nigel Farage Kemi Badenoch
Ep 314Meet 'Thriller' — The Pumpkin That Looks Like It's Ripped Open
Dr. Russell Sharp highlights the eye-catching new pumpkin variety "Thriller": a dual-purpose edible and decorative squash with orange interior and green-striped exterior, set for commercial release in 2026. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/ Halloween pumpkins Squashes and gourds Hampton Court Flower Show Soil Ninja The Plant Rescuer Tony Le Briton

Ep 313Why Is My Rhododendron Flowering in Autumn? The Truth About Precocious Blooming
Dr. Russell Sharp explains why plants like rhododendrons and other ornamentals sometimes flower in autumn — a phenomenon called precocious flowering caused by stress or unseasonal warmth. He outlines how this early bloom reduces spring displays and can ruin fruit crops. The episode discusses implications for hydroponic and indoor growers (especially strawberries and perennial crops), the need for cold treatment in some species, and practical considerations for vertical farming and controlled environments. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/ Azalea Camellia Hydrangea Skimmia Pieris Skimmia Vaccinium Hosta Heuchera Astilbe Japanese Maple Acer palmatum acer japonicum Leonardslee Lakes Borde Hill Garden Sheringham Park Botanischer Garten Bremen Alan Titchmarsh Chris Beardshaw Sarah Raven Nigel Dunnett Joe Lamp’l Costa Georgiadis Peter Cundall Kazuyuki Ishihara Frank Ferragine Louis Benech Capability Brown Gertrude Jekyll Vita Sackville-West Christopher Lloyd Chelsea Flower Show Roy Lancaster

Ep 312Ferns in Hydroponics: From Victorian Mania to Modern Houseplant Gold
Dr. Russell Sharp explores whether ferns are a viable hydroponic crop, covering their limited edibility, high value as houseplants, and conservation concerns from historic "fern mania." The episode explains fern biology and propagation—spores, gametophytes, divisions and micropropagation—plus humidity, foliar uptake, and practical hydroponic considerations for successful cultivation. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/ Joe Swift Home Grown Marf’s Kitchen Garden Nettles & Petals Tales from the potting shed Adam kirtland NPK Hydroponics NPK Media Kyle Kushman Advanced Nutrients Big Mike Straumietis

Ep 311Minecraft and Vertical Farms: Harvest London's Canary Wharf Operation
Dr. Russell Sharp explores Harvest London’s open, glass-walled hydroponic farm at Canary Wharf—an accessible vertical farm supplying leafy greens and microgreens to local restaurants and food stalls. The multi-tier, pesticide-free system is visible to the public, making hydroponics educational and tangible for visitors. The episode highlights how public display boosts trust and perceived value, the site’s strict biosecurity and clean operations, and why integrating visible farms into food halls can be more effective than hidden rooftop setups. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/ Harvest London Canary Wharf Canada Square Pear Tree Kitchen Pizza Pilgrims Chelsea Physic Garden

Ep 310Hydroponic Top Trumps
Russell introduces his hydroponics-themed Top Trumps card pack covering 32 pests, diseases and physiological issues, scored by damage, commonness, difficulty to treat and "bounce-back" ability. He outlines plans to print the cards, asks for feedback on entries, and notes podcast milestones and resources at eutrema.co.uk. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/ Donald Trump Melania Trump Baron Trump Chelsea physic garden Kew gardens Royal botanical gardens edinburgh Brooklyn botanical gardens RHS Wisley RHS bridgewater tender shoot garden club Indy Rana tender shoot garden club greenfulness

Ep 309Secrets of Stomata: How Plants Balance Water and CO2
Dr. Russell Sharp explains how stomata—tiny pores on leaves controlled by guard cells—regulate gas exchange and water loss, why their opening matters for photosynthesis, and how stomatal conductance is measured and used to assess plant stress. He also shares a simple, practical method for growers: the clear nail varnish peel technique to capture leaf impressions and view stomata under a microscope, plus notes on measuring limitations and applications for hydroponic systems. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/ Chelsea Flower Show Monstera Philodendron Autoflowers Photoperiod Autoflower Alan Titchmarsh Monty Don Rachel De Thane James Wong Gardeners World Horticulture Week Gardeners Question Time RHS Royal Horticultural Society Garden Organic Joe Swift Soil Association Organic Farmers & Growers Hampton Court Flower Show
Ep 308Hardwood Cuttings: Cheap, Simple & Often Overlooked
Dr. Russell Sharp explains hardwood cuttings for deciduous woody perennials, why they’re useful in autumn and winter, and how they’re easier and cheaper than softwood cuttings. He covers methods—using sand, perlite or a heated propagator, basal heat, rooting hormone, tips for hydroponic transfers, species that root well (willow, mulberry, hydrangea, dogwood), and how to avoid problems like pythium. Practical advice for propagating and transitioning cuttings into hydroponic systems. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/
Ep 307Inside Lettuce Grow: Zooey Deschanel’s Stylish Home Hydroponics
Dr. Russell Sharp reviews Lettuce Grow, a celebrity-backed company (founded in 2019) that sells stylish, kitchen-scale hydroponic stands and kits like the Farmstand. He covers design, multi-layer systems, recirculating pumps, and accessories aimed at home growers. The episode discusses seedlings, fertilizers (A/B and one-part options), expected yields, pricing and usability for beginners, and why Lettuce Grow appeals as a direct-to-consumer, design-focused hydroponics brand. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Ep 306The limitations of EC meters: what they can, and can't, tell you
Dr. Russell Sharp explains how EC meters work, what they’re useful for and their key limitations — including temperature sensitivity, inability to distinguish ion types, and poor detection of many organic inputs like Liquid Gold (Gold Leaf). Practical tips: always measure EC and pH in your actual water after adding the manufacturer’s recommended dose, flush runoff to prevent salt build‑up, and only use generic EC charts for standard mineral feeds — not for novel or organic fertilisers. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Ep 305Eat Your Way to Healthier Teeth: Israeli Study Finds Brassicas Fight Cavities
In this episode Dr. Russell Sharp discusses an Israeli study showing that diindolemethane (DIM), a compound formed when we digest cruciferous vegetables like broccoli and cabbage, can inhibit Streptococcus mutans growth and disrupt dental plaque. The episode covers how DIM could be used in future oral-care products or encouraged through diet, touches on brassica benefits for soil and hydroponics, and notes related trade and supply updates affecting produce transport. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/
Ep 304Developing a Biodegradable Controlled‑Release Fertiliser
Dr. Russell Sharp discusses manufacturing chitosan biofungicide and announces a lab breakthrough creating a biodegradable alternative to Osmocote, driven by concerns over microplastics and corporate practices. The episode covers trials showing hemp matting outperforms coco coir for microgreens, a failed cardboard grow‑media test, resilient ebb-and-flood clay bead trials, and planning considerations for a hydroponic shipping container. Additional notes include observations on Israeli agricultural land ownership, a European HGV driver shortage, an anecdote about Dr. Dre and 'chronic', and a promise to highlight positive hydroponic work from Israel in a future episode. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Ep 303Why Liebig's Barrel Falls Apart: Rethinking Nutrient Limits in Hydroponics
Dr. Russell Sharp examines Liebig’s Law of the Minimum and explains why the simple barrel analogy can mislead hydroponic growers. He highlights interacting nutrients, dynamic environmental changes, physiological adaptation, thresholds and non-linear responses. The episode explores alternative frameworks—Shelford’s tolerance, multiple limitation hypotheses, dynamic system models and ecological stoichiometry—that better reflect real-world crop nutrition. Practical takeaways: use Liebig’s law only as a teaching tool, avoid overfertilizing, and consider nutrient interactions and changing conditions when managing soilless systems. Link to our Periodic Table of Plant Health: https://eutrema.co.uk/plant-health-periodic-table-poster/

Ep 302Root Pruning: Control Growth from the Roots
Dr. Russell Sharp explores the forgotten technique of root pruning and how trimming roots helps control shoot vigour in both hydroponic and soil-grown plants. The episode explains practical uses—bonsai, nursery stock, ornamental trees, and mother plants—container options like air pots, propagation tips with root cuttings, and precautions about pathogen risk. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Ep 301Root Cuttings: The Forgotten Propagation Technique
Dr. Russell Sharp explains root cuttings — what they are, which plants respond well (eg. sassafras, paulownia/foxglove trees, aralia, clematis, hops), and why they’re useful for removing pests or reverting mature plants to juvenile growth. He also gives practical tips: when to plant vertically or horizontally, why you should avoid rooting hormones, risks like loss of variegation and reduced hardiness in the mother plant, and why root cuttings could be a game‑changer for hop propagation. https://eutrema.co.uk/shop/equipment/auxin-super-concentrate/

Ep 300Exposed: The Death of Journalism in Horticulture & Agriculture
Dr. Russell Sharp rips into the horticultural and agricultural press for ignoring major public-interest stories—accusing industry influence, highlighting ICL’s controversial products, the spread of microplastics from controlled-release fertilizers, and attempts to sell carcinogenic metal-based fertilizers. The episode argues for tougher investigative journalism and promotes hydroponics as a cleaner, soil-free alternative; listeners are invited to share tips and reactions. https://eutrema.co.uk/

Ep 299Hydroponics in Schools: Growing Minds and Greens
This episode explores the pros and cons of introducing hydroponic systems in schools, highlighting educational benefits like hands-on science, engineering, chemistry and business learning, as well as practical challenges such as cost and staffing. It also covers year-round growing, cross-curricular links, community partnerships, green walls and career pathways in ag‑tech and vertical farming. https://eutrema.co.uk/plant-health-periodic-table-poster/

Ep 298Lightning in a Bottle: Plasma-Activated Water for Hydroponics
This episode explores plasma-activated water (PAW): how ionized gas (like lightning) can be used to create reactive oxygen and nitrogen species that supply plant-available nitrogen and act as a natural sanitizer for hydroponic systems. We cover potential benefits (reduced synthetic nitrogen use, biofilm and pythium suppression, no toxic residue), practical approaches, current research and real-world trials, plus limitations such as dosing control, decay of reactive species, equipment costs and energy demands. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Ep 297Why Ladybirds Fail in Hydroponics: The Truth About Biocontrol
This episode explains why ladybirds (ladybugs) are often poor biological control agents in hydroponic systems: adults tend to fly away, larvae may not eat aphids effectively or can die, they can clog filters, and invasive or disease issues can arise. Alternatives are discussed, including lacewings, predatory mites (which can be sustained with pollen), parasitoid wasps, entomopathogenic fungi, and other IPM strategies, plus considerations about cost, availability, and storage. https://eutrema.co.uk/shop/pesticides-organic/eutrema-insecticidal-soap-sodium-free/

Ep 296Hydroponic Mushrooms? Inside the World of Liquid Mycelium
Dr. Russell Sharp investigates whether mushrooms can be grown without soil—covering liquid mycelium cultures, industrial mycelium bioreactors, and the limits of inert hydroponic media like rockwool. He explains that mycelium can be expanded in nutrient broths, but most mushrooms still need a solid organic substrate (straw, sawdust, or coffee grounds) to form fruiting bodies. The episode also discusses pests (fungus gnats), contamination risks, practical starter options (oyster mushrooms on pasteurized straw), and emerging applications for liquid-grown mycelium such as alternative proteins and flavourings. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Ep 295Wetting Agents in Hydroponics
Dr. Russell Sharp breaks down the three main types of surfactants (anionic, cationic, non‑ionic), how they’re used to re-wet hydrophobic grow media, and their roles as adjuvants and insecticidal soaps. He warns against sodium-based products like sodium lauryl sulfate and recommends sodium-free alternatives, highlighting Eutrema’s clay drainer, yucca extract, and non-sodium insecticidal soap. https://eutrema.co.uk/shop/biostimulants/yucca-extract/ https://eutrema.co.uk/shop/pesticides-organic/eutrema-insecticidal-soap-sodium-free/ https://eutrema.co.uk/shop/soil-conditioners/clay-drainer/

Ep 292Inside Growy: A Robot-Run Vertical Farm Tour in Amsterdam
Dr. Russell Sharp tours Growy’s Amsterdam vertical farm, exploring their unique fermented starch acetate growing media, automated gutter system with robots for seeding, irrigation and harvest, and energy‑efficient features like water‑cooled LEDs and heat recovery. The episode covers production figures (60 kg/m²/yr lettuce, 40 herbs, 35 microgreens), long shelf life, supply‑chain integration, crop challenges (spinach and basil), global expansion plans, and potential future mushroom projects. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Ep 291Hydroponics vs. Field Farming: The Real Reasons Supermarkets May Switch
Dr. Russell Sharp contrasts outdoor soil-grown vegetables with hydroponic indoor production, focusing on labour differences, pest pressures, and contamination risks. He explains how the withdrawal of neonicotinoids and rising insect issues in Europe make hydroponics advantageous for pest control and cleaner produce, potentially influencing supermarket sourcing and consumer expectations. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Ep 290Roof Irises: The Perfect Ornamental for Hydroponics
Dr. Russell Sharp discusses the potential of ornamental hydroponics and spotlights Iris tectorum (the roof iris) as an ideal species for indoor soilless cultivation due to its tolerance of low nutrients, stress, and inert media. The episode covers the plant’s historical roof cultivation in Asia and Europe, its bioactive compounds of pharmaceutical interest, and practical ideas like using reed thatch as a growing medium, urging growers to explore ornamentals as a niche in hydroponics. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Ep 289Cardboard, Hemp & Sawdust: Unconventional Microgreens Media Trial
Dr. Russell Sharp tests unconventional, nutrient-free grow media for microgreens—hemp and microgreens matting, cardboard and coarse sawdust—comparing results for chia and onion in a hydroponic setup. The episode covers the trial design, potential issues (mould, decomposition, nutrient deficiencies, wood toxins) and invites listener feedback as the team observes outcomes. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/
Ep 288Gavita Management Buyout: Hydroponics Shake‑Up After Miracle‑Gro Split
This episode reports Gavita’s management buyout following Miracle‑Gro/Hawthorne’s divestment of its hydroponics businesses and what that could mean for the industry. Also included: a production update from Eutrema on a solvent‑free, highly concentrated 12.5% indole‑butyric acid auxin solution, chitosan biofungicide shipments, and planned jasmonic acid products, with trial samples available. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/
Ep 287Auxin Solutions/gels - Do you know how to use them?
Dr. Russell Sharp records a short episode to ask listeners to take a quick Instagram poll about what they know regarding auxin sprays, gels, and solutions. He teases upcoming episodes with deeper explanations of auxin uses and more insights from the congress, including a look at what a "gigafarm" is. https://eutrema.co.uk/shop/pesticides-organic/lime-sulphur/
Ep 286Why 'Hydroponic' Doesn't Sell: Lessons from Growy
https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/Dr. Russell Sharp reports from the World Congress for Vertical Farming after visiting Growy. He focuses on labeling, packaging, shelf life, and why customers prioritize "pesticide-free" and "no need to wash" over the word "hydroponic." The episode also explores supermarket placement, packaging visibility, and how distribution and branding often matter more than technology when it comes to market success.

Ep 285Stereo Microscopes - See Your Plants Like Never Before
Dr. Russell Sharp explains practical ways to inspect hydroponic plants up close, from inexpensive hand lenses and phone macro attachments to investing in a stereomicroscope. He contrasts stereomicroscopes with compound microscopes and shares buying tips like LED illumination, stable stands, and camera attachments. The episode covers how to spot pests and disease early, examine trichomes and flowers, check beneficial nematodes under a compound microscope, and use microscopes for documentation and customer engagement. Practical tips include starting at low magnification, keeping samples flat, and watching tutorials before use. https://eutrema.co.uk/shop/equipment/hand-lens-uv-led-illuminated/

Ep 284Extinct Tomatoes & Why Species Matter More Than Varieties
Dr. Russell Sharp recounts reintroducing extinct tomato varieties like the Blaby Special and Manx Marvel, then examines the relative value of preserving heritage cultivars versus conserving whole wild species and their genetic diversity. He argues that wild species and ancestral strains often hold more crucial genetic value for future breeding and that species-level conservation should be prioritised, while inviting listener feedback and pointing to Eutrema Ltd for hydroponics resources. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Ep 283Hydroponic Carnivores: Growing Venus Flytraps and Other Carnivorous Plants Without Soil
Dr. Russell Sharp experiments with growing carnivorous plants hydroponically—Venus flytraps, sundews, and pitcher plants. He discusses challenges like their need for nutrient-poor acidic conditions, winter dormancy, pests, and the plan to use RO water, very low nutrient solutions, peat-free media, and NFT/DWC systems, promising updates as he learns. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Ep 282Fruit Attraction 2025: Hydroponics Discoveries and Industry Surprises
Dr. Russell Sharp reports from Fruit Attraction in Madrid, sharing key hydroponics and fresh-produce industry discoveries from the trade show. Main takeaways: large distributors dominated the show with impressive stands, biostimulant firms remain small, and a noticeable presence of vegan and microbial fertiliser companies. Hydroponic systems and lighting were scarce compared to field-grown fruit technology. Other notes include concerns about plastic-coated granular fertilisers and cobalt-containing products, interesting innovations such as microalgae biostimulants and a handheld fruit-ripeness scanner, and the underrepresentation of UK exhibitors. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Ep 281Why Is West Virginia Missing from the Hydroponics Map?
Dr. Russell Sharp investigates why West Virginia seems to have low interest in hydroponics, examining factors like GDP, geography, cannabis laws, and local market access. The episode highlights existing efforts — NASA-funded programs at West Virginia University, community college courses, Mocks Farm, and Blue Acre Aquaponics — and discusses grants, production methods, and opportunities for local growth. https://eutrema.co.uk/claim-your-free-turf-brochure/
Ep 280T6P: The Next Big Biostimulant?
Dr. Russell Sharp explores trehalose‑6‑phosphate (T6P) as an emerging biostimulant, its role in controlling sucrose signals, and the promising academic data—especially in wheat—showing yield and stress‑tolerance benefits. The episode compares two commercial players (SugarRox and Unium), discusses intellectual property and market positioning, and considers the challenges of turning trial results into farmer adoption and profitable businesses. https://eutrema.co.uk/category/biostimulants/

Ep 279Growing Mistletoe Without Soil: The Strange 1991 Hydroculture Patent
Dr. Russell Sharp explores a curious 1991 patent by Gunther Mayer that claims mistletoe can be propagated in hydroponic baths using sap from host plants, noting the scant details (sap extraction, preservation, and CO2 use) and that the patent was later withdrawn. The episode also touches on commercial parasitic crops like sandalwood, the challenges and potential of soilless cultivation, and invites listeners to share any experience growing parasitic plants hydroponically. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/
Ep 278Glowing Soybeans and Bee Lifesavers: News Roundup
In this episode of Hydroponics Daily, we discuss two notable agtech developments relevant to growers: InnerPlant's CropVoice—genetically engineered soybeans that light up when infected to provide early disease alerts—and GreenLight Bioscience's RNA-based treatment Noarroa, which targets varroa mites in honeybee colonies and offers extended protection. We explore implications for hydroponic and pollinated crops and point listeners to AgTech Digest for more industry news. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Ep 277Endophytes: The Hidden Microbes Inside Plants
Dr. Russell Sharp explores endophytes—beneficial microbes that live inside plant tissues—explaining how they can boost stress tolerance, aid nutrient uptake, and protect against pests. He discusses notable companies, commercial challenges, safety concerns, and why endophyte products have seen mixed success in agriculture. Listeners will learn about practical limitations for adoption, differences from other microbial products, and the economic and regulatory realities shaping the endophyte market. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/
Ep 276Legal cannabis: Why it is not inevitable that outdoor cultivation will become the norm
Dr. Russell Sharp reacts to a LinkedIn post arguing for a return to outdoor soil-grown cannabis, and explains why hydroponics and controlled indoor cultivation remain vital. He discusses sticky trichomes attracting dust, the risk of pollen contamination (including deliberate male plants placed upwind), and the economic and quality implications for legal cannabis growers. The episode weighs practical pros and cons of outdoor versus indoor growing, highlights real-world threats to crop integrity, and invites listener feedback on whether outdoor cultivation can truly replace soilless systems. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Ep 275Banana Trunks to Grow Bags: The Future of Sustainable Hydroponic Media
Dr. Russell Sharp explores a new grow media made from banana plant trunks developed by Banana Bloom/Southeastern Fiber. The episode covers the material's hydrophilic re-wetting ability, durability, water-holding capacity, and potential as a mix with other media. Benefits include using an agricultural waste product, lower carbon footprint compared with cocoa, and reduced need for chemical processing. Dr. Sharp also clarifies this product is a growing media—not a fertilizer—and discusses practical uses and limitations for hydroponic systems. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/