| Description | Pink Knotweed (Polygonum capitatum) is a tender perennial grown as annual in colder climates. Will reseed in the garden. |
|---|---|
| Pronunciation | (poe-LIG-o-num) |
| Plant Type | Perennial Tender |
| Hardiness Zone | 7-11 |
| Sunlight | full, mostly sunny, some shade |
| Moisture | average, moist |
| Soil & Site | average, moist |
| Flowers | white to pink, globular, found in dense erect spikes, look like they are knotted together, hence the name "Knotweed" |
| Fruit | tiny 3-sided achenes |
| Leaves | simple, dark green to bronzy green, pink to red bands or blotches |
| Stems | swollen nodes |
| Roots | fibrous |
| Dimensions | 5 by 12 inches |
| Maintenance | will reseed and some of the seedlings need to be removed |
| Propagation | seeds |
| Native Site | China, Thailand, Vietnam, Afghanistan, Malaysia & Nepal |
| Misc Facts | Genus name from the Greek poly, "many" and gonu, "knee" in reference to the swollen jointed stem. Collected for western gardens by 1825 (#264). (syn. Persicaria capitata) ( aka:Pinkhead Smartweed, Pink Knotweed, Pink Clover, Pink Fleece Flower) |
| Author's Notes | I have had this in my garden for a few years ( as of 2013). As of 2020 still can be found popping up in the garden. A free-flowering plant with colorful foliage. The first year I grew it in a pot, placed within the garden and now it is everywhere!. But I still like it. |
| Notes & Reference | #164-Hertigae Flower Farm (www.heritageflowerfarm.com) |
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