hort.net Seasonal photo, (c) 2006 Christopher P. Lindsey, All Rights Reserved: do not copy
articles | gallery of plants | blog | tech blog | plant profiles | patents | mailing lists | top stories | links | shorturl service | tom clothier's archive0
Gallery of Plants
Tech Blog
Plant Profiles
Mailing Lists
    Search ALL lists
    Search help
    Subscription info
Top Stories
sHORTurl service
Tom Clothier's Archive
 Top Stories
New Trillium species discovered

Disease could hit Britain's trees hard

Ten of the best snowdrop cultivars

Plant protein database helps identify plant gene functions

Dendroclimatologists record history through trees

Potato beetle could be thwarted through gene manipulation

Hawaii expands coffee farm quarantine

Study explains flower petal loss

RSS story archive

Re: CULT: Botrytis

Hi Laurie

Chuck Chapman had a preventive treatment for botrytis which I am wishing
I had saved .....since I have a couple of those too this year.  Perhaps he
will post it again, I to hate seeing that stuff.  I only lost two irises
over the winter and it was both to that.

SE Manitoba

laurief wrote:

Borers may not scare me anymore, but botrytis does! I've only seen it in my garden once before about 5 yrs ago on one rhizome. Well, it's baaaaaack! At least, I *think* that's what I saw yesterday when I finally got up the nerve to see how the main beds are doing this early in the season. Irises are just starting to awaken here, and I wanted to see if I could tell who did and didn't survive the last 6 months of winter.

In my wanderings up and down the rows, I found several rzs covered in what can best be described as medium brown velvet - obviously a fungus of some type. When I saw botrytis years ago, it was a bit later (and warmer) in the season and presented itself as a puffy black mass atop the rz. I'm guessing that yesterday's "velvet" is just a less mature manifestation of botrytis. Am I correct?

If this is botrytis, I know I need to dig and destroy the affected rzs and their surrounding soil, but here is my question: how much of the surrounding soil do I need to remove to be fairly certain of eliminating the botrytis spores? 2" all the way around? 6"? 1'? Should I hire a backhoe to come remove the top 3' of soil from all of my iris beds (I'm hoping that would be overkill)?

Neil, I know you've dealt with botrytis in the past. Help!


----------------- laurief@paulbunyan.net http://www.geocities.com/lfandjg/ http://www.angelfire.com/mn3/shadowood/irisintro.html USDA zone 3b, AHS zone 4 - northern MN normal annual precipitation 26-27" slightly acid clay soil

To sign-off this list, send email to majordomo@hort.net with the

--------------------------------------------------------------------- To sign-off this list, send email to majordomo@hort.net with the message text UNSUBSCRIBE IRIS

Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index

 © 1995-2017 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement