Tree Albizia julibrissin [Albizia] Albizia julibrissin is known for its attractive, "pom-pom" like flowers that begin in late spring and last through the summer. The interesting effect of the flowers is due to the the over 1" long pink stamens. This plant is not an ideal landscape choice due to its susceptibility to many pests and diseases, including vascular wilt disease (Fusarium).