In Defense of Plants Podcast

The Devonian Period was for plants what the Cambrian Period was for animals. Land plants really started to experiment with new forms of growth some 380 million years ago which led to the establishment of the first forests on Earth. We revisit a conversation with Dr. Chris Berry who was part of the team that recently discovered the oldest fossil evidence of forests. As you are going to hear, these...

The wonderful Sara Johnson returns to the podcast to look back at a year of botanizing in 2025. Join us as we celebrate our favorite botanical encounters of last year. This episode was produced in part by Matthew, April, Dana, Lilith, Sanza, Eva, Yellowroot, Wisewren, Nadia, Heidi, Blake, Josh, Laure, R.J., Carly, Lucia, Dana, Sarah, Lauren, Strych Mind, Linda, Sylvan, Austin, Sarah, Ethan, Elle,...

The drivers of evolution that result in the diversity of life we see around us are complex and fascinating. Nowhere is that more apparent than in pitcher plant genera like Nepenthes and Sarracenia. Join me and Dr. Kadeem Gilbert as we explore the myriad ways he and his colleagues try to tease apart the evolutionary ecology of these enigmatic carnivorous plants. This episode was produced in part by...

Fireflies, lightning bugs, whatever you call them, these wonderful bioluminescent beetles are wonderfully diverse, occur in a variety of habitats, and they need our help. Habitat loss is causing declines for many species but there is a lot we can do to reverse this loss! Surprise surprise, a lot of it involves native plants. Join me and Ben Pfeiffer of Firefly Conservation & Research to learn...

Plant conservation comes in many forms. Today we explore a plant conservation pipeline that starts with propagation and continues through to reintroducing rare plants back into the wild. Conservation Collections Manager for the Desert Botanical Gardens Steve Blackwell takes us behind the scenes of the Garden’s living collection, where rare, threatened, and endangered species are collected, propaga...

Gardening can be a daunting enterprise, especially for a beginner. Heck, even skilled gardeners still kill plants. The quest to become a better gardener is a lifelong journey and thanks to people like my guest today, taking the leap doesn't have to be scary. Joining us is horticulturist and author Chloe Foster who has written an amazing book called "The Rookie Gardener" to help you in your gardeni...

Heat stress is a major component of plant health and it in growing more and more timely each year. Understanding how plants do or do not tolerate heat can teach us a lot about not only individual species, but communities and habitats as a whole. Joining us to talk about this is Dr. Brad Posch who is trying to understand the consequences of heat stress at the leaf level. He and his colleagues are t...

Deserts present a unique set of challenges to plants, especially when you are trying to restore them to the landscape. Drought, heat, soil salinity and more can make desert plant restoration seriously challenging. Luckily, Ali Schuessler and her colleagues at the Desert Botanical Garden are working hard to understand if soil microbes like fungi can help put ecosystems back together. Join us for a...

One of the biggest hurdles to native plant gardening is sourcing native plants. Whereas nurseries are starting to fill the demand, it is nevertheless difficult to keep up with demand. Sourcing seed from the wild is a major part of this process, but how do we do it ethically? Stripping native plant populations of their seeds isn't good for the habitats they comprise so this is where groups like the...

Microbes are everywhere and studying them isn't always easy, but microbial ecology is a vitally important field. Microbes influence the world around them in numerous ways and trying to understand how they do that with plants is where people like Dr. Leonora Bittleston come in. Join us as we explore the leaf microbiomes of sagebrush (Artemisia tridentata) and various species of pitcher plants (Sarr...

People are drawn to plants for various reasons and that is why I wanted to talk with stand up comic and author Sam Tallent. From his early days hauling rocks out of his mom's garden to his desire to bring beauty into his neighborhood, Sam is diving head first into the world of plants. Join us as we explore his love for flowers and learn why their presence means to much to him in a world dominated...

Fallen leaves provide habitat to countless organisms and maintain crucial ecosystem processes. At the same time, convincing people to keep leaf litter on the landscape is a serious challenge. Leaving the leaves needs effective advocacy more than ever and that is where people like National Wildlife Federation Naturalist David Mizejewski come in. With October being Leave the Leaves Month, David and...

Galls are among the most remarkable biological structures on our planet. The organisms that produce them are also extreme diverse and contribute a bewildering amount of biomass to their habitats. Some of the most fascinating gall makers are the gall wasps. This group of organisms is still woefully understudied but people like Dr. Louis Nastasi are trying to change that. Join us as we take a deep d...

Have you ever looked at an old tree and wondered what stories it could tell? If so, this is a conversation for you! Dr. Valerie Trouet returns to the podcast to talk about her wonderful collaborative book "In the Circle of Ancient Trees" in which she and 11 other authors talk about the ancient trees they study as dendrochronologists and how they have helped them understand everything from climate...

Botanical art and science truly feed off of one another. A good botanical artist must understand their subjects to do them justice which fosters a deeper understanding and appreciation for the plants, their habitats, and their role in ecosystems around the world. Join me and botanical artist Carol Woodin as we explore her love of botanical art and her role in helping the American Society of Botani...

Kelp forests are among the most important marine habitats on our planet. They impact our lives in countless ways whether we realize it or not. To protect and restore kelp forests, we must first understand their complex dynamics and that is exactly what people like Dr. Aaron Galloway are trying to do. Listen in as we learn how he and his colleagues use everything from fatty acids to satellite image...

Big sagebrush (Artemisia tridentata) is a foundational species in the ecology and economy of much of western North America. It also faces numerous threats. From invasive grasses and mega wildfires, it is important that we learn how to better restore sagebrush and the habitat it provides. That is where people like Dr. Trevor Caughlin come in. Join us as we look at how he and his lab are leveraging...

Ghost pipe (Monotropa uniflora) has captured the imaginations of many a hiker and can you blame them? What is not to love about a parasitic plant that bucks all the traditional plant trends? For as charismatic as this ghost pipe is, we still have a lot to learn about it. For instance, what has largely been considered a widespread single species turns out to by two. Join me and Ashley Keesling as w...

It is time to revisit this episode is all about the passion flower family - Passifloraceae. Joining us is long time friend of the podcast, the one and only Rebecca Hilgenhof. Rebecca is extremely passionate about this group and I can't think of a better person to dish out an eloquent introduction to these wonderful plants. This episode was produced in part by Yellowroot, Wisewren, Nadia, Heidi, Bl...

How are species boundaries maintained when groups of related plant species live near each other? Considering all the things that need to go right for a plant to survive and reproduce, this is not an easy question to answer. Luckily, the genus Lobelia offers multiple opportunities to explore concepts related to plant coexistence and evolution and that is exactly why Dr. Andrea Case is drawn to this...

Orchids for Peace believes orchids are symbols for both peace and biodiversity. By empowering communities to conserve these plants, this wonderful organization encourages environmental stewardship and fosters a future where nature and humanity thrive together. Join me and founder Dr. Tatiana Arias as we explore why she started Orchids for Peace and how you can lend a hand in their mission to bring...

Microbes are everywhere, even in seeds! Indeed, seeds from various plants can host a community of different microbes. Despite how cool this sounds, we still have a lot to learn about seed microbiomes. Join me and Dr. Gilliam Burgmann as we explore questions like what kinds of microbes are present in seeds? How do these communities differ? Are microbes good, bad, or indifferent to the seeds that ho...

Coastal wetlands are among the most productive ecosystems on our planet. They are a boon for plants, animals, and people alike. However, sea level rise is changing these ecosystems and the communities that rely on them. Join me and Dr. Keryn Gedan as we explore the links between sea level rise, wetland migration, and ghost forests and learn how communities are bracing themselves for adapting to th...

Large seed dispersers are disproportionately affected by human disturbances like habitat loss and poaching. At the same time, a disproportionate number of tropical tree species rely on animals for seed dispersal. What happens when these animals disappear from an area? Do forests suffer and how might this impact things like carbon cycling and climate? Join me and Dr. Evan Fricke as we explore these...

Seed dispersal is a vital ecological process no matter what scale you look at. From the genetic diversity of plant populations to the impact of forests on climate, how plants move around the landscape and regenerate is one of the most important processes on Earth. So, what happens when plants lose seed their seed dispersers? How do things like poaching and habitat loss affect these ecological rela...