African Tulip Tree: A Deadly Bloom for Bees?

Introduced to tropical and subtropical regions as an ornamental plant, the African tulip tree (Spathodea campanulata) is now recognized as an invasive species in Queensland, Australia. This fast-growing evergreen, reaching up to 24 meters, is spreading into disturbed rainforests and along waterways, posing a threat to native vegetation. Its showy orange-red flowers, while attractive, have been linked to the deaths of stingless bees. Research from Brazil indicates that different floral components, such as bud mucilage, nectar, and pollen, may be toxic to these essential pollinators. However, the exact impact on various stingless bee species, particularly those in Australia, requires further investigation.

Queensland has implemented restrictions on the African tulip tree, classifying it as a category 3 restricted invasive plant under its Biosecurity Act 2014. This classification prohibits its sale, distribution, and release into the environment. The state's biosecurity laws also mandate individuals to take practical steps to minimize biosecurity risks associated with invasive species. Control methods recommended in Queensland include manual removal and herbicide application, with specific guidance available from local authorities. Gardeners are encouraged to consider native alternatives to maintain ornamental value without contributing to the spread of invasive plants.