Marshpepper Knotweed
Persicaria hydropiper
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Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Polygonaceae
- Genus:
- Persicaria
- Species:
- Persicaria hydropiper
Growth Characteristics
- Life Cycle:
- Annual
- Growth Habit:
- Forb/herb
- Height:
- 3-4 ft
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- jul, oct
- Bloom Colors:
- pink, white
Native Range
United States: Alaska, Alabama, Arkansas, California, Colorado, Connecticut, District of Columbia, Delaware, Florida, Georgia, Hawaii, Iowa, Idaho, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, Montana, North Carolina, North Dakota, Nebraska, New Hampshire, New Jersey, Nevada, New York, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, Vermont, Washington, Wisconsin, West Virginia, Wyoming, Canada: British Columbia, Manitoba, New Brunswick, Nova Scotia, Ontario, Prince Edward Island, Quebec
Host Plant for Caterpillars
Crocus Geometer (Xanthotype sospeta), Flounced Chestnut (Agrochola helvola), Green Cloverworm Moth (Hypena scabra), Prochoerodes transversata, Simyra henrici, Smeared Dagger Moth (Acronicta oblinita), stalk borer moth (Papaipema nebris), The Gem (Orthonama obstipata), Variable Carpet Moth (Orthonama centrostrigaria), Yellow-legged Tiger Moth (Haematopis grataria), zebra caterpillar moth (Melanchra picta)
Soil Requirements
- Soil Type:
- rich, moist, nutrient-rich soil
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- Often found in wetlands and along water bodies