unusual) then I *carefully* drench the area *under* the rose, around the
roots and base of the plant, extending past the leafline, with Mancozeb to
kill active spores. They hate the spray but at least this kills spores

Hmmm! I wasn't aware Mancozeb
kills spores. The only way I know of to kill
spores is w/ dormant oil which suffocates them.

Do you know where you learned this.

Always willing to learn.

--
Theo in Zone 5
Kansas City