CULT: Borer Comments (no pun intended)
- To: iris-talk
- Subject: CULT: Borer Comments (no pun intended)
- From: N* P*
- Date: Sun, 05 Mar 2000 19:43:02 -0600
From: Nancy Pocklington <npocklington@accunet.net>
Heard an iris grower say that he and his mother both raised irises in
the same community but at different sites. His mother (like many of us)
had a "nice" yard with shrubs, trees, and many other perennials, and she
always had borer problems. His own were grown in an open field with
nothing else around but grass, and he seldom had any borers. His
conclusion was that the bark of all these other
shrubs was a favorite egg-laying host for the borer moths, and of
course bark is not something one can rake up and burn.
My own yard is of his mother's type, and experience here makes me
think his theory is right. The worst problems are invariably on
clumps two years old or older, and the ones nearest the shrubs.
This makes me wonder just how far borers do travel. Does one ever
get them from a neighbor, or only when they are imported on new
plant stock? Any comments?
--
Nancy Pocklington (Fifty miles from the Mississippi River)
Central Illinois, Mid West, Zone 5, USA
P.S.: They definitely hatch in waves, or a second generation comes on
later in the summer. We have found tiny worms in late summer growth.
Hate to have to use Cygon all season, but it seems to be needed.
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