Dr. Mary Albrecht: Hosta Science, Shade Garden Wisdom & the Joy of the Hosta Community

This week on Hosta la Vista, we sit down with Dr. Mary Lewnes Albrecht — horticulture professor, Master Gardener, botanic garden volunteer, communications director of the East Tennessee Hosta Society, and Vice President of Genus for the American Hosta Society. Mary brings a rare combination of academic depth and genuine gardener's heart to everything she does, and this conversation is one of our favorites.Mary's love of plants goes back to age five, helping her mom in the yard. She went on to earn her doctorate and spend 16 years teaching herbaceous plant materials at Kansas State University — yes, the same K-State that Betsy and Mandy attended — before joining the University of Tennessee in Knoxville, where she eventually retired and became a volunteer at the UT Gardens, tending her adopted spot in the hosta garden.We talk about what the VP of Genus actually does for the AHS — working alongside the hosta registrar, encyclopedia contributors, and education programmers — and Mary shares her refreshingly grounded take on hosta taxonomy: plant families are a human construct, she reminds us, and sometimes you just need to chill about the botany and enjoy the beauty.On the growing side, Mary gardens in Tennessee, where heat and humidity create a different set of challenges than the Midwest. She's noticed that minis struggle in southern heat, that yellows and whites need more morning sun to perform well in warmer climates, and that some hostas that look spectacular in photos from up north simply don't reach the same size down south. Her current showstopper? Summer's Rainbow — a sport of Sum and Substance — which she received from a friend and which stops every single garden visitor in their tracks.Mary talks about her favorite large and giant hostas — Blue Umbrellas, Paul's Glory, Liberty, Stained Glass — and makes a compelling case for why big, bold hostas are where the real drama lives in a shade garden. She also shares what she's observed about hostas and human wellbeing, including a graduate student's research that actually measured blood pressure before and after visiting a botanic garden. Spoiler: gardens are good for you.We also hear about the 2025 AHS Convention in Peoria — the serendipitous connections, shopping at Hornbaker Gardens in 90-degree heat, and why Mary drove 9 to 10 hours and came home with a restrained but respectable 8 new hostas. She tells us why first-time convention attendees should absolutely go — not for the leaf show, but for the people.We play Finish the Rhyme, and in a Tennessee-flavored This or That, she picks Kansas City burnt ends, Dollywood over the Grand Ole Opry, and Lookout Mountain over Hot Springs every time.Mary's parting advice is simple and perfect: enjoy hostas, challenge yourself, and try a new one every now and then.If you love shade gardening, collecting hosta varieties, or just want to spend time with someone who has dedicated her career and her retirement to plants and the people who grow them — this episode is for you. [email protected] on Spotify, Apple Podcasts, Facebook & Instagram