John Savage wrote:
Greenhorn writes:
I'm growing some "Parade" roses down in TAS and noticed, just as a large
number of buds are developing, some white powdery spots developing on many
of the leaves. I'm guessing it's a fungal problem and seem to remember
reading somewhere that spraying a 1/8 (ratio?) solution of milk and water
might help.

Is this correct? If not, can anyone suggest another way of treating this?

Well, the exact proportions probably aren't all that crucial. :-)
I have heard some recipes calling for baking soda and milk and water.
I believe the milk should be full cream milk, it needs that little amount
of fat.

On his gardening programs on weekend radio Graham Ross was talking
about black spot on roses, and he said that he has found that reconstituted
powdered milk works better than the fresh milk. He said you should spray
every week, or certainly at least every two weeks, so that any new growth
keeps getting treated.
--
John Savage (news address invalid; keep news replies in newsgroup)