Persicaria
Knotweed
Poor Persicaria! Certain weedy, invasive members of the genus have given the rest a bad name, and discouraged gardeners from getting to know these versatile performers. Our garden-worthy selections are happiest in semishade with ample moisture.
Selected by acclaimed Belgian landscape architect and plant breeder Chris Ghyselen, this easy-going robust perennial yields spectacular legions of lithe extralong terminal spires crowded with petite purplish red flowers from early summer ’til frost. The steadfast stalks are clad in large, ripple-edged pointed green leaves that render a substantial, spunky foundation. Well-suited for adequately-moist borders, informal plantings or pondside, either as a stand-alone or en masse, ‘Purple Spears’ injects prismatic accents amongst America natives like Eupatorium ‘Purple Bush’ and Panicum ‘Purple Tears’.
Blooms late June–October
Size: 3-1/2' – 4' 0" high x 3' 0" wide.
Zone 5/6.
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Other selections in this genus:
- Persicaria affinis ‘Dimity’
- Persicaria amplexicaulis ‘Fat Domino’
- Persicaria amplexicaulis ‘Alba’
- Persicaria amplexicaulis ‘Amethyst Summer®’
- Persicaria amplexicaulis ‘Anne′s Choice’
- Persicaria amplexicaulis ‘Atrosanguinea’
- Persicaria amplexicaulis ‘Blackfield’
- Persicaria amplexicaulis ‘Golden Arrow’
- Persicaria amplexicaulis ‘Inverleith’
- Persicaria amplexicaulis ‘Orange field’
- Persicaria amplexicaulis ‘Rosea’
- Persicaria amplexicaulis ‘Summer Dance’
- Persicaria amplexicaulis ‘Taurus’
- Persicaria bistorta ‘Hohe Tatra’
- Persicaria bistorta ‘Superba’
- Persicaria microcephala ‘Red Dragon’
