trefle.io · Taken May 30, 2018 by jose (cc-by-sa)
Polygonaceae
Curled dock
Rumex crispus
Also known as Curly dock, Rumex patientia var. crispus, Narrowleaf dock, Yellow dock
Zones 4–10Sun Full SunWater ModerateCare Low
Native Plants · Edibles & Herbs · Dock · Herb · Medicinal · Wildflower · Naturalized · Hardy · Taproot · Rumex
Pet-safeBeginner-friendlyMedicinalAttracts pollinators
Currently out of stock everywhereStock updated 9/6/2026
Curled dock is an extremely hardy perennial herb that thrives in poor soils and neglect. This tough plant self-seeds readily and can become weedy if not managed. Best grown in wild or naturalized areas where its deep taproot helps break up compacted soil.
Growing conditions
The details behind the basics
- Daily light
- 6 hours
- Watering
- Water moderately, tolerates both moist and somewhat dry conditions · Every 7-10 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
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Form & growth
Mature size and habit
- Mature height
- 2 ft – 5 ft
- Spread
- 3 ft
- Spacing
- 18 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, Bahamas, Baleares, Baltic States, Belarus
- Attracts
- Bees, Birds
Sources: trefle, usda
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