Re: Powdery Mildew
- To: s*@MAELSTROM.STJOHNS.EDU
- Subject: Re: [SG] Powdery Mildew
- From: G* O*
- Date: Mon, 15 May 2000 07:41:06 -0400
Thanks, Sheila. More good suggestions. I do mulch overwinter with ground
leaves (though here in Z7 the Pulmonarias would probably do just fine
without it) and I haven't been cleaning up the dead foliage.
Another P. question..do most of you remove the old flower stalks, or do you
let them stay on in the hopes they will self seed? Someone on the list
said a while back that their Pulmonarias had seeded themselves about.
Gerry
At 03:51 AM 5/15/00 -0400, you wrote:
>
>Hi, Gerry. Another help is to remove all infected leaves and stems in the
>autumn and avoid mulching over winter - the powdery mildew doesn't survive
>as well on bare ground. I don't remember why I came to that conclusion; I
>deducted it from something I read about the mildew. But it does help to
>substantially reduce the amount of mildew from one year to the next. For
>the plants that need a winter mulch to survive, you can water with a
>disinfectant formula (try Jerry Baker's website) and use a 'clean' mulch
>such as cocoa hulls or pine boughs.
