[NAFEX] powdery mildew okay in the mulch pile?
Lon J. Rombough
lonrom at hevanet.com
Sat Oct 17 15:11:14 EDT 2009
Powdery mildew is very species specific. There are many species and
even different genera of powdery mildew and powdery mildew of peonies
won't infect other plants. Composting the foliage of the peonies will
destroy some of the mildew, but the spores are in the area and will
find your peonies again, whenever conditions are right. However, the
fact that the peonies do get mildew means conditions in your area may
be conducive for other mildew species to grow on their appropriate
In short, go ahead and compost the infected foliage. Do look at ways
to increase sunlight and air circulation where mildew is a problem.
And used something to control the fungus as early in the season as
possible. That will do more to help than anything else.
NEW grape pruning video: http://www.bunchgrapes.com/dvd.html View a
short, low resolution clip here:
Grapes, writing, consulting, my book, The Grape Grower, at
http://www.bunchgrapes.com Winner of the Garden Writers Association
"Best Talent in Writing" award for 2003.
A video about The Grape Grower :
On Sat, Oct 17, 2009 at 1:31 PM, Ginda Fisher <list at ginda.us> wrote:
> This isn't strictly about fruit, but I think the principle is the
> same, as powdery mildew attacks some fruit plants as well as my
> For the last several years I've gotten some powdery mildew on my
> peonies. It's time to cut them down for the winter, and they all have
> a little mildew, and the ones I didn't spray (with milk!!) have a lot
> of mildew. In the past I've carefully separated the mildewed waste
> and put it in my municipal trash instead of throwing it into the mulch
> pile. But now that the fungus seems endemic, I wonder if it's worth
> the trouble. What say you? Okay to just toss it in the mulch pile?
> Note that my "mulch pile" isn't a carefully tended compost heap that
> necessarily gets hot enough to "cook" things. It's just the back
> corner of the property where I toss fall leaves and random yard waste,
> and where my husband dumps moldy fruit and the kitchen compost.
> Starting this year I have mined it a little for topsoil (there's very
> nice organic stuff under the top foot of mostly leaves.) And I expect
> to mine it for topsoil in the future, so I don't want to build up a
> heavy disease load. But I don't know how much it matters.
> eastern MA, zone 6
> nafex mailing list
> nafex at lists.ibiblio.org
> Reproduction of list messages or archives is not allowed.
> This includes distribution on other email lists or reproduction on
> web sites.
> Permission to reproduce is NEVER granted, so don't claim you have
> **YOU MUST BE SUBSCRIBED TO POST!**
> Posts from email addresses that are not subscribed are discarded.
> No exceptions.
> To subscribe or unsubscribe, go to the bottom of this page (also can
> be used to change other email options):
> File attachments are NOT stripped by this list.
> TAKE STEPS TO PROTECT YOURSELF FROM COMPUTER VIRUSES!
> Please do not send binary files.
> Use plain text ONLY in emails!
> NAFEX web site: http://www.nafex.org/
nafex mailing list
nafex at lists.ibiblio.org
Reproduction of list messages or archives is not allowed.
This includes distribution on other email lists or reproduction on web
Permission to reproduce is NEVER granted, so don't claim you have
**YOU MUST BE SUBSCRIBED TO POST!**
Posts from email addresses that are not subscribed are discarded.
To subscribe or unsubscribe, go to the bottom of this page (also can be
used to change other email options):
File attachments are NOT stripped by this list.
TAKE STEPS TO PROTECT YOURSELF FROM COMPUTER VIRUSES!
Please do not send binary files.
Use plain text ONLY in emails!
NAFEX web site: http://www.nafex.org/
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Size: 4492 bytes
Desc: not available
Url : http://lists.ibiblio.org/mailman/private/nafex/attachments/20091017/17e0fc15/attachment.bin
More information about the nafex