Theresa Crimmins on the Power of Plant Phenology (#40)
This month on The Plantastic Podcast, I dive into the seasonal rhythms of the garden with phenologist Theresa Crimmins. Theresa shares how a college class sparked her lifelong fascination with plants and how that journey led to her role as director of the USA National Phenology Network. We explore how gardeners can use phenology to build their own bloom calendars, observe seasonal cues, and connect more deeply with their landscapes. She offers practical insights into tracking life cycle events like bud break and flowering, the importance of growing degree days, and how citizen science efforts are helping document climate change impacts. We also discuss the emotional power of observation, the joy of discovering small changes in nature, and how tracking phenology can reconnect us to wonder. Enjoy the show!
The Plantastic Podcast · Theresa Crimmins, Jared Barnes
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Show Notes
THERESA CRIMMINS BIO
Theresa Crimmins is an internationally recognized phenology researcher, director of the USA National Phenology Network, and associate professor in the School of Natural Resources and the Environment at the University of Arizona. In her role with the Network, Theresa supports an amazing team and works enthusiastically to support the growth and use of phenology data and resources curated by the USA-NPN, involvement in Nature’s Notebook, and a broader appreciation of phenology among scientists and non-scientists alike.
Theresa has published over 70 peer-reviewed articles and book chapters in journals including Nature, Geophysical Research Letters, Global Change Biology, and Journal of Ecology. Her writing has appeared in Scientific American, The Hill, and the Old Farmer’s Almanac, and Nautilus Magazine. She shared her thoughts about the importance of observing phenology in a TEDx talk in October 2024 and her book, Phenology, was published through MIT Press in early 2025.
THE PLANTASTIC PODCAST
The Plantastic Podcast is a monthly podcast created by Dr. Jared Barnes. He's been gardening since he was five years old and now is an award-winning professor of horticulture at Stephen F. Austin State University in Nacogdoches, TX. To say hi and find the show notes, visit theplantasticpodcast.com.
You can learn more about how Dr. Jared cultivates plants, minds, and life at meristemhorticulture.com. He also shares thoughts and cutting-edge plant research each week in his newsletter plant•ed, and you can sign up at meristemhorticulture.com/subscribe. Until next time, #keepgrowing!