What kills bottle brush trees?

Bottle brush trees can be susceptible to several factors that may lead to their decline or death. Key threats include root rot caused by overwatering or poor drainage, which can suffocate the roots. Additionally, pests such as scale insects and aphids, as well as diseases like leaf spot and fungal infections, can weaken the tree. Environmental stressors such as extreme temperatures or poor soil conditions can also contribute to their demise.