Rumex crispus

curly dock, narrowleaf dock, sour dock, yellow dock
Family

Polygonaceae

Leaf Arrangement

alternate

Leaf Attachment

petiolate

Leaf Margin

entire, undulate

Leaf Type

simple

Leaf Shape

oblong, lanceolate

Growth Form

forb

Flower Color

green, yellow

Flower Month

March - May

Height (meters)

0.9 - 1.5

Milky Sap

No

Armed/Unarmed

Unarmed

Origin

introduced

Lifespan

perennial

Growing Season

Cool season


Wetland Class

FAC

Wetland Coefficient of Conservatism

0

Prairie Coefficient of Conservatism

-2

Field Characters

Leaves curly, crinkled, or wavy not flat. Fruit sessile. Under 2" wide. Ocres at stem nodes.

Cultural Information

Seeds require alternating temperatures of degrees 68-86 F (20-30 C) and light for germination (Gardner 1921, Cross 1931, Everson 1949). They remain viable in dry storage for at least 5 years and average approximately 226,000/lb.

Animal Use

The following information is for genus Rumex with note that R. acetosella is especially important: Animals that eat its seeds: Cinnamon teal, Canada goose, Sora rail, Redwing blackbird, Cowbird, Horned lark, American pipit, Field sparrow, Fox sparrow, Eastern grasshopper sparrow, Henslow sparrow, Swamp sparrow, Tree sparrow, Vesper sparrow, White-crowned sparrow. Animals that eat its leaves and seeds: Greater prairie chicken, Bobwhite quail, Wild turkey, Woodcock, Meadow mouse, Pine mouse, White-footed mouse. Animals that eat the plant: Cottontail rabbit (Martin et al. 1951).

Natural History

Found in soil that is moist at least part of the year, usually in disturbed ground, in Louisiana, east and southeast Texas. A Eurasian weed that is now naturalized in temperate climates throughout the world. The young leaves can be eaten in the spring before turning bitter, or they can be boiled in several changes of water to remove the bitter element.

Habitat

Seasonally moist usually disturbed ground, waste places, pastures, fields, roadsides.