I have planted several euphorbia (gopher) plants in my desert garden. One of them died recently, and the second is colapsing. Other plant are ok...I have planted several euphorbia (gopher) plants in my desert garden. One of them died recently, and the second is colapsing. Other plant are ok. When removing the dead plant 1 found 2 black shining 1 inch and extremely slim worms(?). Could they be the cause of the plant's death? Thanks. Show more