Re: CULT: Duration of RoundUp damage?

Well, freeze damage is definitely not a possibility -
we've had one hard freeze in the 20 years I've been
living here :-) I think the lowest temp we had this
past winter was in the upper 30s.

We did have some serious temp fluctuation earlier
in the spring - last month, after a winter full of
rain and 50-60 degree temps, we had a sudden brief spell
of warm dry weather, reaching the upper 80s on one day.
Could that have cause RoundUp-like damage?

The mystery deepens - I noticed another bud with
similar, though less severe, damage today.
It's in a completely different part of the yard,
and again there are flowers nearby with no problems.
Also, this one isn't a recent acquisition - I did dig
and divide it this past summer, though.

I'll try to take pictures this weekend and post them on
iris-photos.

Is there any chance this could be caused by soaking rhizomes
too long in a bleach bath? I do a soak in a 10% bleach solution
as part of my digging & replanting protocol, but I usually don't let them soak
longer than 15-20 minutes. That would seem to be the only common factor
between the two plants, other than possible weather effects.

Jean
freeze-free SF bay area, zone 9

Robin Shadlow wrote:


Jean,

A few years ago I saw what I was certain was Roundup damage at a state park
that our club gardens at.  We have asked the rangers repeatedly, and I
believed them that they did not use Roundup.  I have also seen photos from
freeze damage that looked the same as the Roundup damage I have seen photos
of.

Have you had some wildly fluctuating temps back when the stalks were just
setting on?

Robin Shadlow
zone 5 NE

where extreme anticipation is the order of the day.  The seedlings are
throwing stalks up by the hundred now!!

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