I keep killing Curry Tree plants by keeping roots too wet which leads to Edema. Can you please detail a soil mix that will help with water drainage.
This sounds like a very pleasant plant; after researching your interesting question, I may have to get a curry tree of my own! Our readers have encountered your problem before and the archives contain three articles which should give you the information you need.
Additionally, there are some other ways of treating or helping prevent plant edema, which are explained and illustrated at: