Johnston's Knotweed
Scientific Name: Polygonum douglasii Greene ssp. johnstonii (Munz) J.C. Hickman
Synonyms: Polygonum douglasii Greene var. <i>johnstonii</i> Munz, Polygonum sawatchense Small, Polygonum sawatchense Small ssp. <i>oblivium</i> Costea & Tardif, Polygonum triandrum Coolidge, Polygonum utahense Brenckle & Cottam
Classification: Plantae/ Tracheobionta / Spermatophyta / Magnoliophyta / Magnoliopsida / Caryophyllidae / Polygonales / Polygonaceae / Polygonum L./ Polygonum douglasii Greene ssp. johnstonii (Munz) J.C. Hickman
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| General Information | |
|---|---|
| Usda Symbol | PODOJ2 |
| Group | Dicot |
| Life Cycle | Annual |
| Growth Habits | Forb/herb |
| Native Locations | PODOJ2 |
Plant Guide
Use a soil moisture meter to monitor the soil moisture where Johnston's Knotweed is planted.