My Cassia Tree’s Leaves Have Turned From Green To Yellow Green–help

Question

What fertilizer, if any, should I apply, how much to apply, work into soil or not? Sorry my camera is not working currently.

Answer 1

Your soil may need more iron. The tree likes a balanced pH, so you may want to do a soils test and see if there's something like iron that's lacking in the soil. Other possibilities are more serious, so let's wait to see if amending your soil will help.Read these articles for additional info:

https://www.gardeningknowhow.com/plant-problems/environmental/leaf-chlorosis-and-iron.htm
https://www.gardeningknowhow.com/ornamental/trees/cassia/growing-cassia-trees.htm