Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to the Atlantic Coast.
Habitat: Garden escape, often of roadsides, fields, wastelots, and other disturbed areas..
Flowers: June-August
Origin: Introduced from Eurasia
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bees, flies
Perennial herb from a rhizome, the stem 1-1.5 m. tall, freely branched.
Leaves alternate, scale-like, scarious, 1-2 mm. long, with clusters of filiform branches 10-12 mm. long in the axils.
Flowers dioecious, borne single or in pairs along the stem on drooping, filiform pedicels up to 2 cm. long; tepals 6, greenish-white, bell-shaped, 3-7 mm. long.
Fruit a red berry, 6-8 mm. thick.
PNW Herbaria: Specimen records of Asparagus officinalis in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Asparagus officinalis checklist entry
OregonFlora: Asparagus officinalis information
E-Flora BC: Asparagus officinalis atlas page
CalPhotos: Asparagus officinalis photos