I wouldn’t recommend it for the small garden but a nice patch in the larger garden or border is nice. Cooperative Extension, which staffs local offices in all 100 counties and with the Eastern Band of Cherokee Indians. Polygonaceae persicarium: Smart arse with pink pokers and knobby knees What we in British Columbia call Smart Weed (more polite than smart arse) is Polygonum persicarium also known as lady's-thumb.Persicaria comes from the Latin word for "peach" because of the similarity of its leaves to those from the peach tree. Persicaria amplexicaulis, Polygonum amplexicaule: Common name: fleeceflower: Family: polygonaceae: Life cycle: perennial (Z5-9) Flowers: purple (late summer-fall) Size: 3' Light: sun-part shade: Cultural notes: ordinary garden soil (not too dry) Persicaria amplexicaulis 'Firetail' per-sih-KAR-ee-ah am-pleks-ih-KAWL-is. See more photographs of each plant by clicking on the photographs. Persicaria amplexicaulis 'Firetail' (per-sih-KAR-ee-uh) (am-pleks-ih-KAW-liss) Polygonaceae This is an interesting perennial that you don’t see very often. Map Help ^Top of Page. Polygonaceae (Buckwheat Family) HABIT: Herbaceous: SUN REQUIREMENTS: Sun: SOIL: Wet, moist or average. Its leaves are dark green, arrow-shaped, and slightly puckered. Persicaria amplexicaulis 'Firetail' Your search resulted in one taxon in our living collections. Bistorta amplexicaulis 'Firetail' NC State University and N.C. A&T State University work in tandem, along with federal, state and local governments, to form a strategic partnership called N.C. https://www.soonerplantfarm.com/plant/fleece-flower-firetail HARDINESS: USDA Zone 5 (Coldest zone where hardy) ... Persicaria amplexicaulis 'Firetail' Leaf: Persicaria amplexicaulis 'Firetail' Flower: Persicaria amplexicaulis 'Firetail' ^Top of … Himalayan Knotweed. This vigorous but noninvasive perennial flowers from early summer into autumn with crimson blossoms to 6 inches long. Others, like our covergirl, Persicaria amplexicaulis ‘Firetail’ seen at the Toronto Botanical Garden, can make handsome garden plants, for flowers, or foliage, or both. Knotweeds (in the diverse buckwheat or Polygonaceae family) were the plants I said were used well in June Blake’s garden. Zones US, MS, LS; USDA 6-8. Deep green, lance-shaped, finely tooth-edged leaves are mostly basal; they grow 2412 inches long, turn bronze in winter. Persicaria amplexicaulis. Spreading plant to 1 feet high, 2 feet or more wide. The "knobby knees" of Polygonum refers to its jointed stems. 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