Continuous Yellow Leave Droppings From Cassia

Question

2 year. Old . Otherwise looks healthy. No blooms this past year.

Answer 1

Cassia (Senna spp.) is resistant to pests and diseases but can be affected by borers and caterpillars. Examine the trunk for evidence of borers, such as holes with sawdust like particles outside of them. They are hard to detect until damage is done.

Overwatering or underwatering can cause yellow leaves. Cassia is moderately drought tolerant and doesn't usually need supplemental watering unless you are in a drought situation. These articles should help:

https://edis.ifas.ufl.edu/publication/ST126

https://ufdcimages.uflib.ufl.edu/IR/00/00/42/56/00001/MG00700.pdf