Hi Jack,
I'm sorry to be the harbinger of bad news but I've never successfully rid
my Rosemary of powdery mildew which I imagine you have, because the cure is
something that poisons the food. Fungicides are available to treat it on
roses or ornamentals. Oil sprays to help stop Black spot can be used as a
preventative but have no business in anyone's mouths. Yuck. Mildew is
obnoxious. It spreads and destroys other plants if allowed to stay in your
garden. I'd start over with a new plant in clean soil or a different spot in
the garden and treat the ground with a fungicide in quarantine earth space
until the following season so it's out of the soil.
If you have aton of old rosemary and you're determined to save the plant you
can treat it, without eating it for a few years, then let it grow without
fungicide for a season before eating it to be safe.
Jane
"Jack Curry" Jack wrote in message
m...
My rosemary has a white mildew? or mold growing on its leaves. It looks
rather like it's been dusted with talcum powder except the stuff doesn't
come off. Does anyone know what this might be and how I might rid my
plant
of it?
Thanks very much,
Jack