02/27/2026
Today marks the close of National Invasive Species Awareness Week 2026, and we’re highlighting a success story here at Old Cahawba Archaeological Park. With help from the Cahaba River Coalition, Boy Scout Troop 100 out of Gardendale, AL, and park staff, a large stand of Chinese parasol trees was eradicated along the Cahaba River. The “before” photo (top left) shows the site in 2022; the “after” photo (top right) shows the remarkable recovery by 2024.
Chinese parasol (Firmiana simplex) is a member of the mallow family (Malvaceae), recognized by its huge, palmately lobed leaves and smooth, bright green bark. Once planted as an ornamental shade tree, it is now considered a woody invasive that spreads aggressively, outcompetes native plants, and can even cause structural damage with its extensive root system.
Removing invasives like Chinese parasol gives native species room to rebound—supporting healthier soils, stronger riverbanks, and more resilient wildlife habitat. Thanks to community partners and volunteers, this stretch of riverbank is once again on a path back to its natural balance.
Even with successful removal, invasive species management is never truly “one and done.” Chinese parasol seeds can remain viable in the soil, and new seedlings may appear for years after eradication. That’s why routine monitoring and maintenance are essential at Old Cahawba Archaeological Park. By checking treated areas regularly and removing any new growth early, we can protect the recovery of native plants and ensure this restoration success lasts well into the future.
See the comments to watch the moment the largest Chinese parasol tree came down! ⤵️ For more information about invasive species, please check out these websites: https://www.fws.gov/event/national-invasive-species-awareness-week-2026
https://naisma.org/programs/nisaw/