In Defense of Plants Podcast

Magnolias are among the most iconic trees in the world. This family (Magnoliaceae) has also been around for a very long time. But, for all their history, intrigue, and interest, the magnolia family is not faring well in our modern world. Recent estimates indicate that nearly half of all magnolia species are threatened with extinction and that is why the Global Conservation Consortium for Magnolias...

To look upon a flowering azalea is to bare witness to one of our planets most stunning botanical spectacles. These ericaceous shrubs enjoy celebrity status among many a gardener because of this. Azaleas are also ecologically important plants in their native habitats. Joining us to celebrate these Rhododendrons is Curator of Special Collections at the Davis Arboretum and Coordinator for the Alabama...

Plants come in a bewildering variety of colors. Even within species, colors can vary from individual to individual. How and why color can differs are exactly the kinds of questions that intrigue PhD student Cierra Sullivan. Join us as we explore ideas relating to topics such as leaf variegation and the influence of climate change on flower color. This episode was produced in part by Jeremy, Suzann...

In this episode, we celebrate one of the most venerable conifers in North America - the Douglas-fir (Pseudotsuga menziesii). This wide ranging species can establish early after disturbance and live for centuries, bolstering the ecology of the forests it comprises. Joining us for this celebration is arborist Casey Clapp, co-host of the wonderful Completely Arbortrary Podcast. Listen in as we wax po...

Their ancestors once dominated the coal swamps of the Carboniferous Period, growing into massive trees that could reach upwards of 160 feet (50 m) into the canopy. Today, the quillworts (Isoetes spp.) are all that remains of this lineage. Though cosmopolitan in their distribution, quillworts can be hard to find unless you know where to look. Luckily, there are people like PhD student David Wickell...

Have you ever walked through a plant nursery or garden center and wondered about who keeps track of all those named varieties, selections, and cultivars? The answer to this are horticultural taxonomists! From registering new plants to maintaining herbarium records and DNA barcoding, horticultural taxonomists really have their job cut out for them. Joining us to talk about this topic is Mathew Rees...

It's important to give credit to the small but important things in life, like algae! In this episode we dive under the microscope lens with Julia Van Etten to talk about the microscopic world of algae and how they relate to plants. Julia is a PhD student researching extremophile algae and also runs a wonderful and fascinating science communication outlet called Couch Microscopy. Join us as we take...

In this episode, we explore how a small native seed company selling native plant seeds out of their living room grew into one of the biggest native plant nurseries in the United States. Joining us is Horticulture Educator Kaitlyn O'Connor to give us a deep dive into how Prairie Moon Nursery is able to provide over 700 species of native plants for use in everything from gardens to large-scale resto...

The United Nations kicked off 2021 is a rallying cry for restoring ecosystems around the globe. The so-called UN Decade on Ecosystem Restoration is aimed at preventing, halting, and reversing ecosystem degradation around the globe. Importantly, ecosystem restoration should not be seen a prescription, but rather a process that changes as we learn more about the world around us. Joining us to talk a...

This episode explores the amazing world of Trillium diversity. This charismatic genus is incredible in its own right, but what makes it so diverse only adds to the intrigue. Joining us is Dr. Chelsea Miller to talk about her research on the role of ants in explaining the diversity of trillium in North American forests. You will learn just how important these insects are when it comes to why some s...

Everyone needs a bit of calcium in their diet, but too much of it can cause serious health issues. The same is true for plants. Growing in soils high in calcium is no walk in the park and yet, around the world, we see many plants that have adapted to soils made toxic by calcium sulfate. How they manage to adapt to such conditions is the main research interest of Dr. Sara Palacio. She focuses her w...

Palms (Arecaceae) are among the best known and easily recognizable groups of plants on Earth. Their diversity is staggering and they play important roles in the ecology of the habitats in which they grow. But how much do we know about their evolutionary history? What can a deep time perspective teach us about palm evolution. Joining us to talk about this is paleobotanist Dr. Kelly Matsunaga. Dr. M...

Cacti may appear like strong, independent organisms but that simply isn't the case. No organism operates in a vacuum and cacti are no exception to this. This episode, we talk with Stefan Burger, or as you may know him, Cactus Explorer, about the amazing world of cacti and some of the organisms they interact with that allow them to live in some of the harshest places on our planet. As you will hear...

Plant sex is strange. Rooted in place, plants have had to get really creative (evolutionarily speaking) when it comes to reproduction. Moreover, there is no single pathway to success, and each plant lineage seems to have evolved multiple strategies for swapping gametes. Joining us to talk about the sex lives of one genus of plants is PhD student Melody Sain. Melody has turned her research focus on...

Disturbance is an integral part of any ecosystem, but as the human presence on this planet continues to grow, disturbances are becoming more frequent and more severe. In this episode, Dr. Brian Buma joins us to discuss his research on disturbance ecology. His work has taken him all over the globe with the aim of understanding how disturbances lead to rapid changes in slow growing ecosystems like f...

Resolving the origins of flowering plants requires an understanding of how their morphology came to be. After all, despite their rapid appearance in the fossil record, flowering plants did not evolve over night. There had to be transitional phases between what we recognize as a gymnosperm and what we recognize as an angiosperm and that is what this episode is all about. Sir Peter Crane of the Oak...

Seeds are among the most important biological structures on this planet. Seeds have been instrumental in the diversification of plants, allowing them to spread into new habitats all over the globe. In fact, you and I would not be here if it were not for seeds. For these reasons and more, Dr. Cecilia Zumajo is fascinated by how seeds evolved. By looking at the genetic mechanisms that control seed d...

More than half of the species on the Endangered Species List are plants and yet plants receive less than 5% of all conservation funding. If we care about slowing or reversing biodiversity loss, we need to start prioritizing plant conservation efforts. Joining us to talk about this is plant conservationist Sara Johnson. Sara's work focuses heavily on what it takes to protect rare plants like the Fl...

Are the leaf margins smooth or toothed? How dense are the leaf veins? Are the petioles thick or thin? The answers to these questions go far beyond helping us identify plant species. Dr. Ian Miller of the Denver Museum of Nature and Science joins us to talk about how such details in leaf fossils can be used to understand everything from the climate of the Cretaceous to the movement of continents. Y...

The asteroid that slammed into the Yucatan Peninsula some 66 million years ago marked the end of the Cretaceous and the reign of the dinosaurs. As famous as this extinction event is, we know considerably less about how such disturbances affected ecosystems like tropical rainforests. That is where people like Dr. Mónica Carvalho come in. Together with her colleagues, Dr. Carvalho is using vast amou...

In today's human-dominated world, healthy forests require healthy and sustainable management practices. To do this, we must try to understand the myriad processes that affect forest health and that is where our guest comes in. Dr. Matt Russell is an Associate Professor and Extension Specialist for the University of Minnesota and his research focuses on forest ecosystem health. Specifically, he aim...

In this episode, we take a deep dive into the wild world of the Hawaiian silversword alliance. This group of daisy relatives represents one of the most remarkable adaptive radiations on the planet and is comprised of three genera: Wilkesia, Argyroxiphium, and Dubautia. From tiny cushion plants to woody trees and vines, these unique plants have done amazing things on the Hawaiian Archipelago. Even...

Bluebells (Hyacinthoides non-scripta) are a biological treasure throughout parts of Europe and the British Isles. When left undisturbed, these spring-blooming bulbs can pain entire landscapes in blue for a few weeks each year. Aside from their beauty, bluebells are also marvels of evolution. Joining us to talk about this is Dr. Vera Fitzsimmons-Thoss AKA Vera Bluebell, a chemical ecologist turned...

Humans have been seed banking in one form or another for millennia. Whereas historically, seed banking has largely focused on agriculturally important plants, the practice has been expanded to protecting a multitude of species from extinction. Joining us in this episode is Atlanta Botanical Garden's Micropropagation and Seed Bank Coordinator, Jason Ligon to talk to us about everything involved wit...

This episode is all about the fascinating world of oak seed dispersal. Many of us have undoubtedly enjoyed watching frenzied squirrels and jays hurriedly collecting and stashing acorns. But such observations are only the tip of the extremely complex iceberg of oak seed dispersal. Join ecologist Dr. Michael Steele and me as we discuss his new book "Oak Seed Dispersal: A Study in Plant-Animal Intera...