Persicaria amplexicaulis 'Firetail' - Red Fleeceflower or Knotweed

Want to know what plant is 'all the rage' in Europe? and a 2010 Royal Horticultural Society Plant of Merit?

The 3' - 4 ft tall 'Firetail' Knotweed or Persicaria amplexicaulis ‘Firetail’

Beloved by James Van Sweden and Piet Oudolf, this non-invasive Himalayan perennial adds a “nice red spark” to the late summer garden (from July through Frost). It forms a bushy mound of foliage topped by brightly colored “tails” of tiny crimson flowers.

It looks great in a mass planting and wonderful as a background for Asters, mums, short grasses, geranium 'rozanne'. Contrasts well with purple salvia, echinops, helianthus, nepeta or perovskia. Also effective in moist areas along streams or ponds. Underplant it with early-spring-blooming bulbs for color in the spring .

Persicaria amplexicaulis prefers moist soils and partial sun to full sun conditions. It has no serious disease or insect problems.  Hardiness USDA zones 5 to 9

Persicaria Pink Elephant from Chris Ghyselen

There area many varieities of Persicaria amplexicaulis available from white, pink to dark red.  For great photos of this beautiful and useful go to the website of Persicaria breeder Chris Ghyselen from Belgium. He lists over 30 cultivars of P. amplexicaulis!  Some varieties flop over and are best supported or surrounded by dense neighbors.



  1. This was wonderful and honestly, I have yet to see a plant that is beloved by Piet Oudolf that I don't also I love everything to do with him. What a genius in the garden.

    Thanks for this. So much fun.

    Sharon Lovejoy Writes from Sunflower House and a Little Green Island

  2. Thanks Sharon...he certainly has opened our eyes to so many great plants...i hope you liked my link to Chris Ghyselen's amazing site.

  3. Wow!! What a beautiful accent plant! You can really see how well it supports the flowers around it.


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