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  1. Polygonum - Wikipedia

    Polygonum is a genus of about 130 species of flowering plants in the buckwheat and knotweed family Polygonaceae. Common names include knotweed and knotgrass (though the common names may …

  2. Polygonum - North Carolina Extension Gardener Plant Toolbox

    About 130 species of Knotweed or Smartweed are known, and most are plants of disturbed, moist areas. They vary greatly, can be annuals or perennials, and are mostly found in northern temperate …

  3. Polygonum

    Plastid sequences have provided support for uniting Polygonella with Polygonum, although nuclear data (ITS) have so far not resolved the relationships.

  4. Polygonum Plant Growing & Care Guide for Gardeners

    Nov 26, 2023 · The Polygonum genus, commonly known as Knotweed, is part of the Buckwheat family, Polygonaceae. It includes annuals and perennials, with flowers ranging from white to pink.

  5. Smartweed | Polygonum and Persicaria spp. | Mississippi State ...

    Polygonum is composed of two groups, smartweed and knotweed, which are both common plants in Mississippi’s terrestrial and aquatic settings. However, most Polygonum species prefer moist-soil …

  6. Genus: Polygonum (knotweed): Go Botany

    There are several things that are particularly important when identifying species of Polygonum. First, most New England species make two kinds of fruits in a growing season.

  7. 27 Facts About Polygonum

    Apr 13, 2025 · Polygonum is a large genus with over 220 species spread across the globe. These species vary widely in appearance and habitat. The name "Polygonum" comes from Greek words …

  8. Polygonum | Landscape Plants | Oregon State University

    Polygonum: from the Greek, poly, many; gonu, joint, the stems have conspicuously swollen nodes.

  9. Polygonum - FNA

    Nov 5, 2020 · Polygonum arenarium Waldstein & Kitaibel and P. bellardii Allioni were reported by B. L. Robinson (1902) from Rhode Island and Massachusetts, respectively. The former resembles P. …

  10. Polygonum - Knot-Grass, KnotWeed, Perennials Guide to Planting …

    Jan 2, 2025 · Polygonum – Knot-Grass, KnotWeed, Perennials Guide to Planting Flowers The Knot Weed is a very ornamental plant for any garden because the foliage is so beautifully tinted in …