Tag Archives: common knotweed

Silversheath Knotweed

This gallery contains 8 photos.

While common knotweed (Polygonum aviculare) grows as a low mat, its close relative, silversheath knotweed (Polygonum argyrocoleon) is an erect plant. Otherwise the two knotweed species are very similar. As mentioned in my previous post on common knotweed, both plants … Continue reading

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Common Knotweed

This gallery contains 6 photos.

Sometimes species within the same genus look very similar and are distinguished only by minor differences, while other species within a genus can, on casual observation, appear so different that they do not seem to be closely related. The moth … Continue reading

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