Persicaria amplexicaule ?
I acquired this plant from RBG plant sale many years ago, and lost its label. (It is possibly ‘Firetail’.) It does not have any notable features that distinguishe it from other Persicaria amplexicaules of this type. It is very tough and carefree. The fall foliage can be brilliant red. It blooms towards the end of summer.
Persicaria amplexicaulis ‘Blackfield’
Persicaria amplexicaulis ‘Fat Domino’
This a relatively large Persicaria amplexicaule, and is not a ‘ground cover’. The flowers are not as profuse as my ground cover Persicaria amplexicaule. It blooms towards the end of summer.
Persicaria amplexicaulis ‘Golden Arrows’
This plant was a very vigorous grower in its first season; taking over a corner quickly, probably because it liked that full sun and moist location. (Other gardeners seemed to enjoy it equally in shady part of their gardens, but the foliage were not nearly as bright glowing lime yellow, and the flowers not as profuse as it would be in full sun.) Its foliage is highly ornamental even without the flowers. It bloomed for a long time and well into October. However, the reddish pink flowers on golden foliage may not be favourable to some gardeners. It appeared to suffer sever damage in its first winter in my garden (not sure the damage was weather or vole related), and struggled to come back the second season.
This is a lovely giant perennial. I am fortunate to have enough room in my garden to accommodate it. It is used as a bold structure plant with attractive creamy white plume flowers that bloom for a long time from late spring.