Dealing with dense infestations of tall albizia trees can be tricky. For safety and effectiveness, eradicating albizia from these areas must be undertaken with care. Big Island Invasive Species Committee, after conferring with experts, recommends the following approach to working in natural areas with many large albizia.
Please note that albizia limbs can fall even without apparent disturbance. Anytime you are working under large albizia, you should wear a hard hat for protection. Never work under large albizia during high winds or rain!
Hazard trees that pose a threat to roads, structures, or power lines should be removed or cut back by a certified arborist before large non-hazard trees can be addressed. (For instance, a 100’ tall tree that is 70’ from a roadway would be considered a “hazard” tree that should be removed professionally). After that, the large albizia that do not directly threaten any structures can be treated with herbicide using an incision-point application of herbicide. BIISC provides free training workshops to utilize this method, developed by Dr. James Leary of CTAHR, for treating non-hazardous trees.
Recommended Treatment of Albizia Trees
Arborists may not be willing to accept contracts to remove hazard trees if there are large, standing dead trees nearby. This is why it is best to remove the hazard trees before treating any large albizia.
Keiki albizia that are growing under large stands can be treated to prevent the next generation of hazards from developing. Again, care should be taken while working in stands of large albizia.