Alston Lecture at the Atlanta Botanical Garden

I was honored to be invited to make a presentation at the Atlanta Botanical Garden in October of 2022, just a few weeks after Hurricane Ian swept through southwest Florida. This talk starts with some reflections on Ian and cabbage palms, then covers a few basics, describes some intriguing cabbage palm paradoxes, and ends with some observations about cabbage palms in Georgia, including a puzzling question about John Muir and the famous Bonaventure Cemetery.

New Front Opens in the War On Florida’s Landscape Palms

Once confined to California and the East Coast of Florida, a new front has opened in the war on palm trees. NBC2 NEWS in Fort Myers has posted The Problems with Palm Trees When it Comes to Climate Change.

This brief 2:21 minute video developed by meteorologist, Lauren Hope, is a naive, first world, pearl-clutching introduction to how lining McGregor Boulevard with royal palms may somehow be significantly contributing to climate change.

The piece starts off with two local news team reporters filling us in about the emerging palm threat, including the quote: “. . while these trees are beautiful, they do not do much for our planet.” Really, because there are many places in Florida and around the world where they are the only trees that can grow.

” while these trees are beautiful, they do not do much for the environment.”

The piece relies heavily on an interview with Dr. Brian Bovard, Assistant Professor of Environmental Studies at Florida Gulf Coast University. His testimony asks viewers not to rule out palms because of their role in the ecosystem and notes ( as suggested above) they occupy a role in the ecosystem that other trees can’t occupy. And he encourages the use of native palms such as cabbage palms and royal palms. You get the sense he actually likes palms and through the use of creative editing Dr Bovard has been co-opted to add some ask-an-expert street cred to the piece that started with a foregone conclusion.

Meteorologist Hope points out that an oak or pine could have 30 times the leaf area of a comparably aged palm tree. This is as meaningless as pointing out that one palm frond is thousands of times better at absorbing CO2 than an oak leaf or pine needle. She does not mention that one could plant multiple palms instead insisting on a trunk by trunk comparison. And she actually suggests lining Florida streets with pine trees – something we see virtually nowhere (because pines are not greet street trees).

This is the type of superficial mainstream media soundbite reporting that is so misleading. The fallacies inherent in these stories are reviewed elsewhere [Ditching Urban Palms? Not so fast!], but talk about missing the forest for the trees — some palms actually are a significant climate change threat because of the ongoing replacement of tropical forests with palm oil plantations.

Union of Concerned Scientists: Palm Oil and Climate Change

Palm oil production is a major contributor to CO2 emissions

World Wildlife Fund on Palm Oil

Dr Bovard’s research and teaching interests include: “The responses of forest ecosystems to predicted changes in atmospheric CO2 and climate, and the role forest ecosystems play in both carbon storage and hydrologic processes especially when impacted by human activities,” so he’s no doubt aware that the missed carbon capture opportunity of lining McGregor Boulevard with Royal Palms is insignificant compared with a single palm oil plantation, but our local news teams can be relied upon to make the global threat all about us, and not the real challenges posed by big corporate players.

Cabbage Palm Basics

This YouTube video Get to Know our State Tree, the Cabbage Palm (aka Sabal Palmetto)is not about THE PALMETTO BOOK: HISTORIES AND MYSTERIES OF THE CABBAGE PALM. It’s more of a basic introduction to cabbage palms with some North Port specific content appended at the end. Content includes: some basics, bootjacks, palms are not grasses, shade production, overpruning, new pruning regulations, tough plants, new disease (lethal bronzing), and they can be invasive. If you are not interested in North Port, the presentation lasts a little more than a half hour. Thanks to the Environmental Conservancy of North Port for hosting. Questions and answers start around 53:45.

Lethal Bronzing is Killing Cabbage Palms in the Myakka Watershed

This post complements Chapter 7 Diseases Stalk the Cabbage Palm in my book, The Palmetto Book: Histories and Mysteries of the Cabbage Palm, published by the University of Florida Press.

Disclaimer: I am not a plant pathologist, I am a natural historian. These observations are my own, based on my familiarity with cabbage palms and having attended three day-long UF/IFAS summits (2017,2018, & 2019) on Lethal Bronzing.

Lethal Bronzing is a fatal disease that affects many species of palm trees, including our native cabbage palm, Sabal palmetto.  It was first diagnosed in Florida in 2006. It was noticed and diagnosed upstream of Myakka River State Park in in Manatee County late May 2020. It was probably present along the Myakka months, or possibly years earlier. 

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