Why and how to protect cabbage palm
The cabbage palm (Sabal palmetto) is a stalwart native and has been described as a small ecosystem in itself. If you respect Sanibel’s environmental sensibility to live in harmony with our natural surroundings, that seems reason enough to protect this important palm. Notwithstanding, it is also the Florida state tree, rugged and perfectly adapted to our, sometimes harsh, barrier island environment.
WHY PALM DESERVES KNOWLEDGABLE CARE
Let’s explore this small ecosystem to better understand how the cabbage palm supports plant, bird, insect and critter life.
– Brown fronds provide a unique habitat for tree frogs and bats, which are a natural mosquito control.
– Frizz from the fronds makes great nesting material.
– Flowering branches (inflorescences) provide nectar for bees and butterflies.
– Palm berries are sources of highly nutritious food for local birds, migratory birds and small mammals.
– The palm “boots” (leaf bases) are important habitat for other plants, including the golden polypody fern.
Harsh pruning of the palms jeopardize all these habitat benefits and can endanger the health, and even the life, of the palm. Its green fronds are the cabbage palm’s source of nutrients.
– Cutting healthy green fronds stunts growth, invites disease and reduces the palm’s natural resilience to high winds.
– Pruning of protective green fronds makes the palm’s cold-sensitive heart susceptible to frosts.
– An over-pruned palm — “hurricane cut” — leaves the heart of the palm totally unprotected in strong winds. Damage to the heart can result in the death of the palm.
– An over-pruned palm can develop a bottleneck trunk, sometimes referred to as “penciling.” In high winds and hurricanes, this stressed and weakened point can cause the palm to break off and die.
– Work boots with climbing spikes cause wounds in the trunk, leaving the palm prone to disease.
HOW TO MAKE A DIFFERENCE
You can make a difference, and below is how:
– Do not remove green fronds.
– Save money! Say no to landscapers who want to over-prune, especially green fronds. Exclude annual harsh-pruning from your landscape contract. Though not necessary, it is acceptable to prune brown and yellow fronds hanging below an imaginary horizon line — think like a clock, 9 a.m. to 3 p.m.
– Say no to “hurricane cuts.” The cabbage palm is naturally wind resistant. If you are hoping to protect your palms during hurricane season, this drastic pruning, which leaves them vulnerable, is the worst thing you could do.
– Help spread the facts. Having a better understanding of the cabbage palm’s use by our plants and wildlife enables us to see its natural assets as things of great value and, to many, beauty.
You can learn more about protecting native vegetation on Sanibel by visiting the city of Sanibel’s Natural Resources Department page at www.mysanibel.com.
For questions about vegetation or to request a site visit, call the department at 239-472-3700.
The Sanibel Vegetation Committee wrote this article in cooperation with the city of Sanibel’s Natural Resources Department. For more information, including to read other articles in the series, visit https://www.mysanibel.com/491/Vegetation-Committee-Articles.