Knotgrass: it is not grass | Nature Notes from Dorset

I try to find something interesting to say about everything I write about but with this plant, knotgrass (Polygonum aviculare), I am struggling! The first thing to say is that it is not, of course, a grass; it is a flowering plant. The flowers tend to be very small with the resulting seeds being more visible than the flowers. It has few distinguishing features being much like its relatives in the dock family.
Knotgrass is undoubtedly a weed of cultivation that can be found on bare earth and cultivated soils just about everywhere. It is variable in height sometimes growing to a metre tall but it is usually much, much shorter than that. There are six species of knotgrass in my field guide and this is by far the most common, most have suffered as the result of herbicide usage

Read more: Knotgrass: it is not grass | Nature Notes from Dorset

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