trefle.io · Taken Oct 15, 2022 by Kai Best (cc-by-sa)
Polygonaceae
Prostrate knotweed
Polygonum aviculare
Also known as Polygonum aviculare monspeliense, Polygonum aviculare subsp. latifolium, Doorweed, Birdweed
Native Plants · Knotweed · Groundcover · Hardy · Prostrate · Poor · Soil · Polygonum · Weedy
Prostrate knotweed is an extremely hardy groundcover that thrives in poor, compacted soils where other plants fail. This low-growing annual readily self-seeds and requires virtually no care once established. Useful for stabilizing soil in harsh conditions but can become weedy in garden settings.
Growing conditions
The details behind the basics
- Daily light
- 6 hours
- Watering
- Water sparingly, very drought tolerant once established · Every 10-14 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 5.5–6.5
- Temperature
- -30°F to 95°F
- Cycle
- Perennial
- Propagation
- Seed
Hardiness
USDA 4a-10b
Form & growth
Mature size and habit
- Mature height
- 2 ft – 5 ft
- Spread
- 12 in
- Spacing
- 6 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- No
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Afghanistan, Alabama, Alaska, Albania, Alberta, Algeria, Altay, Amur, Angola, Argentina Northeast, Argentina Northwest, Argentina South, Arizona, Arkansas, Austria, Azores, Baleares, Baltic States, Belarus, Belgium
- Attracts
- Birds
Sources: trefle, usda
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