Anne from Narragansett Ri. writes
Have a beautiful Spruce tree that this Spring started showing brown needles. After looking on-line, it fit the description of needle cast rust. I have sprayed with Draconil a few times. Copper hydoxide seems to be the choice of treatment from what Iread. So that is my question.
Kocide 3000-O Fungicide/Bactericide has been discontinued by the manufacturer with CuPRO 5000 DF Fungicide being the recommended alternative product as both products contain the active ingredient Copper hydroxide.
Answer last updated on: 08/05/2021