Display each plant's location on a map of the JCRA's beds by clicking on the bed numbers. Its leaves are dark green, arrow-shaped, and slightly puckered. Knotweeds (in the diverse buckwheat or Polygonaceae family) were the plants I said were used well in June Blake’s garden. HARDINESS: USDA Zone 5 (Coldest zone where hardy) ... Persicaria amplexicaulis 'Firetail' Leaf: Persicaria amplexicaulis 'Firetail' Flower: Persicaria amplexicaulis 'Firetail' ^Top of … Himalayan Knotweed. https://www.soonerplantfarm.com/plant/fleece-flower-firetail Spreading plant to 1 feet high, 2 feet or more wide. Persicaria amplexicaulis 'Firetail' Your search resulted in one taxon in our living collections. 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) 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. Himalayan native. Persicaria amplexicaulis 'Firetail' per-sih-KAR-ee-ah am-pleks-ih-KAWL-is. Polygonaceae (Buckwheat Family) HABIT: Herbaceous: SUN REQUIREMENTS: Sun: SOIL: Wet, moist or average. This vigorous but noninvasive perennial flowers from early summer into autumn with crimson blossoms to 6 inches long. See more photographs of each plant by clicking on the photographs. Deep green, lance-shaped, finely tooth-edged leaves are mostly basal; they grow 2412 inches long, turn bronze in winter. Map Help ^Top of Page. The "knobby knees" of Polygonum refers to its jointed stems. Others, like our covergirl, Persicaria amplexicaulis ‘Firetail’ seen at the Toronto Botanical Garden, can make handsome garden plants, for flowers, or foliage, or both. You will be charmed by the bountiful long-blooming spikes of vivid red flowers of POLYGONACEAE Other Plants in the Buckwheat Family: COMMON NAME(S) Red Bistort | Mountain Fleece Location Map for Persicaria amplexicaulis 'Firetail' (Red Bistort; Mountain Fleece) - 5 Map Locations Found Click a marker pin or a green plant 'dot' for details. 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