Japanese Butterbur March 2013

Yesterday, as I was walking along the banks of the River Taff towards Cardiff, I spotted some Common Butterburs (Petasites hybridus) flowering by the water; these plants are easily recognisable by their waxy pink flowers and large rounded leaves. But right next to them were hundreds of smaller plants; they looked similar, but not the same, and have since been identified as Japanese Butterbur (Petasites japonica). I reported the sighting to SEWBReC who confirmed the species identification and told me that the last time these plants were seen in the Llandaff area was back in 1983!  I counted more than five hundred individuals and there were probably at least as many more again pushing their way through a thick mulch of dead Japanese knotweed stalks.

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