Skip to main content

Perennial sweetpea

Also known as: perennial pea, everlasting pea

Lathyrus latifolius L.

Images

Click on image to view full size

Perennial sweetpea flowers
Perennial sweetpea
Perennial sweetpea stem wings
Perennial sweetpea pods
Perennial sweetpea
Perennial sweetpea flowers
Perennial sweetpea
Perennial sweetpea inflorescence

Morphology

Stem
Vine, trailing or climbing via tendrils, 3 to 7 feet long, glabrous, waxy, conspicuously 2-winged; wings 1/5 to 2/5 inch wide.
Leaves
Alternate, pinnate, rachis extending into forked tendril; leaflets 2, lanceolate to elliptic or oblong, 1.6 to 6 inches long, .5 to 1.2 inches wide, glabrous; stipules lanceolate to ovate, 1/2 to 3 inches long, 1/6 to 2/5 inch wide; stalks broadly 2-winged
Inflorescence
Raceme, 5- to 15-flowered, on stalk 4 to 8 inches long.
Flower
Showy, odorless; stalk 1/2 to 1 inch long; calyx bell-shaped, 1/6 to 1/4 inch long; lobes 5, unequal; corolla papilionaceous, 1/2 to 1 inch long, pinkish-purple, rose or white, sometimes stripped; banner nearly as wide as long; stamens 10, 9 united, 1 free.
Fruit
Pods, linear, 2.5 to 4 inches long, 1/4 to 2/5 inch wide, flattened, glabrous, 10-15 seeded; seeds oblong, 1/5 inch long, dark brown, surface rough.

Ecology

Habitat
Fence rows, roadsides, waste places; frequently near farms or homes.
Distribution
East 2/3 of Kansas.

Practical Information

Toxicity
Seeds are poisonous.

Additional Notes

Comments

Very hardy. Will form a dense mat 18 to 30 inches thick when there is nothing for it to climb on. May become weedy or invasive in some habitats.

Quick Facts
Plant Type
Wildflower
Family
Fabaceae - Bean Family
Life Span
Perennial
Height
Trailing or climbing vine to 7 feet
Origin
Introduced
Last Updated
2008-02-27
Color Groups
Pink, Red & Orange Wildflowers
Blue, Purple, Lavender & Violet Wildflowers
Flowering Period
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Blooms: June, July, August