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Height: 12-18 in. (30-45 cm) 18-24 in. (45-60 cm) 24-36 in. (60-90 cm) 36-48 in. (90-120 cm) 4-6 ft. (1.2-1.8 m)
Spacing: 18-24 in. (45-60 cm) 24-36 in. (60-90 cm)
Hardiness: USDA Zone 4a: to -34.4 °C (-30 °F) USDA Zone 4b: to -31.6 °C (-25 °F) USDA Zone 5a: to -28.8 °C (-20 °F) USDA Zone 5b: to -26.1 °C (-15 °F) USDA Zone 6a: to -23.3 °C (-10 °F) USDA Zone 6b: to -20.5 °C (-5 °F) USDA Zone 7a: to -17.7 °C (0 °F) USDA Zone 7b: to -14.9 °C (5 °F) USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F)
Sun Exposure: Full Sun Sun to Partial Shade
Danger: Parts of plant are poisonous if ingested
Bloom Color: Pale Green Inconspicuous/none
Bloom Time: Mid Summer
Foliage: Herbaceous
Other details: May be a noxious weed or invasive Requires consistently moist soil; do not let dry out between waterings
Soil pH requirements: 5.6 to 6.0 (acidic) 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline)
Patent Information: Non-patented
Propagation Methods: From seed; direct sow outdoors in fall Direct sow as soon as the ground can be worked From seed; direct sow after last frost
Seed Collecting: Bag seedheads to capture ripening seed Allow seedheads to dry on plants; remove and collect seeds Properly cleaned, seed can be successfully stored
On Feb 21, 2011, holeth from Lehigh Valley, PA (Zone 6a) wrote:
The PA Germans/"PA Dutch" taught me to call this plant "Indian Tobacco," although I know that common name is _also_ used locally to refer to dogbane. (Dogbane is a close kin to asclepias.)
Curly dock has one tough taproot. If I can't dig a plant when it's young, I can only manage to keep it trimmed on the surface & prevent seed. We have several growing entangled in our metal critter fencing. I can't dig them out without wrecking the fence.
On Jan 27, 2010, rockgardner from Billerica, MA (Zone 6a) wrote:
I know it's considered a weed to most people but I kind of like it. It's certainly not been a problem on my property, and the rusty colored seed stalks add a nice contrast to the parts of my yard where I just let grow wild. Considering how many seeds are on those stalks I'm surprised to see only a dozen or so plants come up every year. I pull them all up before the first snow or if they flop over as a precaution to keep them in check.
On Jul 8, 2008, olmpiad from Dallas, TX (Zone 8a) wrote:
A common "weed" to many, Curly Dock has been used for quite a long time, for both it's leaves, and it's seeds. Early settlers would use the seeds as a substitute for flour. The leaves, when young, can be used to make salads, but care must be taken, as they contain oxalic acid, which can cause bladder/kidney stones in excess. This is avoided by boiling the leaves.
7 members have or want this plant for trade.
