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Early this month I decided I needed to cut back the Common Knapweed (Centaurea nigra) severely if it wasn’t to take over the whole garden! Last year it was just along both sides of the driveway, but this year it had set itself in swathes over a lot of the Upper Garden, restricting other plant growth. So the majority of it has been strimmed at what I judged to be the best time – after most of the other wild flowers were over for the season, and before the knapweed itself had a chance to set seed. It will of course come back, but it should be controllable now and should be greatly reduced.
There is also the question of ecosystems and ecological change. As mentioned in earlier Blogs, I have already noticed changes to the ecology of the Forest Garden in the short time it has been in existence, and controlling (but not eliminating) the knapweed will obviously have an effect too. But as more plants are added as the years go on, there will be change anyway, planned disturbance, so I consider this approach justifiable.Continue reading