OK, I asked about this before & someone gave me an answer but I can't find it.
My cannas have been attacked by some type of moth that lays it's eggs in the leaves & stiches the leaves closed with some kind of webbing. It's destroying my cannas! They look aweful! I was told to spray them with some kind of insecticide, which I've done multiple times & I still keep finding new ones

I, actually, caught the culprits last night...and chased them with the spray! Is there anything I can do to deter them from getting into my cannas? Help!
