Posted: 13/11/2014 at 17:11
vigilance and persistence is all I can suggest I'm afraid! this is one of "my weeds" as I think of them - the ones that pop up everywhere in your garden when your back is turned. In my garden, bittercress are always trying to sneak in, and the annoying thing is that they are quite small when they flower and set seed and this seems to be at any time of year. Very easy to miss, especially in the winter when we all spend less time in the garden. I also have to keep on top of Herb Robert, chickweed, cleavers and sycamore seedlings. I just try to think of them as green manure and be grateful (touch wood) that I haven't got some of the more pernicious, deep rooted ones. If you have a patch where they are winning the battle and little else grows, except maybe bulbs, might be worth covering the ground with newspaper and a good layer of mulch. This will smother them and prevent their seeds generating and of course will all rot down over winter.