Monday, June 12. 2006
The Enemy
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That is a pest here, too.
#1
Bonita
(Homepage)
on
2006-06-12 10:20
(Reply)
We have knapweed in our yard and my husband pulls it regularly. We must've pulled a few truck loads of it. Keeps coming back.
#2
martha
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on
2006-06-12 23:21
(Reply)
I was told that each plant has 100,000 seeds!
#3
Joe G
on
2006-06-13 09:10
(Reply)
Knapweed is allelopathic, meaning it produces a chemical which is toxic to other plants and gives it a competative advantage over other vegetation. The chemical stays in the soil, which makes it very hard to restore areas where Knapweed has invaded. I read somewhere that more than 4,000,000 acres of rangeland in Montana is infested with Knapweed. It sure likes disturbance. I once recontoured an old gravel pit and tried to restore native grasses on it. Two years latter, it was solid knapweed. About the only hopeful things I have heard recently about knapweed is that some researchers at the University of Colorado have isolated the chemical produced by knapweed and are investigating it as an organic herbicide. It will not work against itself, ob viously, but there are other invasives...
#4
Tim Abbott
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on
2006-06-14 21:48
(Reply)
