Weeds are constantly a problem here. There is no season in which every sort of weed is inactive. As some annual types finish dispersing seed and die off for winter, others begin their season. Most weeds just happen to be most active as winter becomes spring. They try to stay ahead of desirable plants. Lawn weeds have been proliferating faster than turf.
Annual weeds were easiest to pull while still dispersing roots, and while the soil was still damp from winter rain. Biennial weeds that grew last year are more firmly rooted, even if their soil is damp. Perennial weeds are most persistent, with extensively dispersed roots. Of course, as lawn weeds, all three types are more challenging than in the open ground.
Separation of weeds from turf grass is significantly more work than pulling weeds alone. It is not so easy to reach down into the roots of the weeds. Nor is it so easy to pull weeds without pulling some of the turf grass with them. The process is likely to leave bald spots. Many of the persistent perennial lawn weeds are more firmly rooted than the turf grass is.
Dandelion is notorious for leaving bits of root behind when pulled. These bits regenerate into new plants that are even more difficult to pull than the originals. The various species of oxalis persist by various means. Some produce bulbs or offsets that are impossible to separate from the soil. Others develop thick networks of sinewy stolons that break apart.
Some persistent lawn weeds, such as plantain and English daisy, as well as many of the feral grasses, are so difficult to eradicate that they ultimately integrate into the lawns that they infest. It is simply easier to mow over them than to try to eliminate them. They never quite assimilate though, so interfere with the uniformity of color and texture of their lawns.
Unfortunately, some lawn weeds do worse than merely compromise the visual appeal of turf. Burclover and foxtail can be dangerous to pets. Their seed is designed to stick to fur. Burclover seed structures can tangle and accumulate in long fur, causing dense matting. Foxtail seed structures can lodge into eyes, nostrils, throats and ears, or pierce soft skin.
2 thoughts on “Lawn Weeds Are Low Down”
Perhaps we overemphasize uniformity of turf. I’ve always been fine with white clover and violets. Plantain and creeping charlie, on the other hand, drive me crazy.
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Foxtail and burclover are what bother me. Cranesbill used to be more of a problem. I do happen to like the daisies though. A very long time ago, a legendary gardener of Golden Gate Park (whose name I can not remember) plugged either English daisy or diamondia into the vast lawns of Golden Gate Park. Since then, both, as well as gazanias, periwinkle and a few other ‘weeds’, naturalized in the lawns, and are now what people expect the lawns to look like. That was back when there were still hippies putting flowers in their hair.
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