species 124 observations
Small's Knotweed
Polygonum buxiforme
Field notes
Polygonum aviculare or common knotgrass is a plant related to buckwheat and dock. It is also called prostrate knotweed, birdweed, pigweed and lowgrass. It is an annual found in fields and wasteland, with white flowers from June to October. It is widespread across many countries in temperate regions, apparently native to Eurasia, naturalized in temperate parts of the Southern Hemisphere.
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Caterpillars
Moths and butterflies raised on it


White-lined Sphinx, Ruby Tiger Moth, Gem Moth, Pink-barred Pseudeustrotia Moth
28
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Plant eaters
Animals that feed on it



Red-winged Blackbird, Wood Duck, Common Gallinule, Song Sparrow
40
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Flower visitors
Pollinators and other flower visitors


Common Eastern Bumble Bee, Common Grass Skimmer, Pure Green Sweat Bee, Orange-legged Furrow Bee
16
Range
Greener is more native, amber more introduced; paler is less certain. How this was decided
Key traits
- Layer
- Herbaceous plants
- Plant type
- Annual Wildflower
From USDA PLANTS.