Bottlebrush: Florida Friendly or Foe?Bottlebrush is a common plant in the landscapes of Florida; you may know it for its showy red blooms that, resembling bottlebrushes, coined the tree’s name. Although it thrives in both south and central Florida, bottlebrush is native to Australia, which is also home of the extremely invasive Australian Pine and Melaleuca tree. Recently, the UF/IFAS Assessment of Non-Native Plants in Florida’s Natural Areas deemed one species of bottlebrush to be a high invasion risk – so, is bottlebrush a Florida-Friendly plant or a Florida foe?
Weeping vs. Red BottlebrushBefore a verdict can be made, a deeper understanding of this tree is needed. There are two main species of bottlebrush used in Florida: weeping bottlebrush and red bottlebrush (scientific names Melaleuca viminalis and Melaleuca citrinus, respectively). To distinguish the two, look at their branches; weeping bottlebrush has a very exaggerated droop in its canopy, while red bottlebrush branches are more erect. Although the intensity of the droop may not be obvious when looking at just one specimen, comparing the two side-by-side makes the distinction easier.
Growing Bottlebrush SafelyStill, the question remains: is bottlebrush safe to grow in Florida? The answer – yes! Specifically, red bottlebrush is entirely safe and recommended as a Florida-Friendly landscape plant. However, weeping bottlebrush should be avoided due to its documented risk of invasiveness. Unless grown indoors or in an enclosed greenhouse, weeping bottlebrush plants already in the landscape should be monitored for spread or, preferably, removed. If you have a weeping bottlebrush in your landscape, keep an eye on the UF/IFAS Assessment; this species will be re-evaluated soon for an updated invasiveness conclusion, meaning it could be deemed as invasive.
Resources:https://assessment.ifas.ufl.edu/assessments/callistemon-citrinus/ https://assessment.ifas.ufl.edu/assessments/melaleuca-viminalis/ https://edis.ifas.ufl.edu/publication/ST110 https://edis.ifas.ufl.edu/publication/ST111 Note: unless otherwise mentioned, images are property of UF/IFAS.
by Christine Russo
Source: UF/IFAS Pest Alert Note: All images and contents are the property of UF/IFAS.