Redstem Filaree

Pest: Redstem Filaree (Erodium botrys)

Pest Type: Annual broadleaf weed

Major Identifying Features: Low growing, hairy seedlings, cotyledons have long stalks and are egg shaped, redstem filaree has deeply or divided lobes, whitestem filaree has 5 deeply asymmetric lobes, leaves form a rosette when plants are young, spreading to erect growth habit, 2-3 feet tall, whitestem leaflets are less deeply cut than those of redstem filaree, redstem filaree has a reddish stem and whitestem filaree a pale stem, pink to reddish-lavender flowers with five petals, fruit resembles a stork’s head

Life Cycle: Winter annual/biennial, reproduces by seed

Pest Rating: Minor

Management Rating: Moderate

Host/Season/Outbreak Information: Widespread in California except in deserts and the Great Basin, up to 3300 feet (5000 feet E. moschatum), inhabits agricultural land and disturbed areas

Damage Information: May be able to outcompete native species, produces 2400-9900 seeds per plant, can be stored up to 5 years

Management Options: Cultural by mulching, pulling etc.

Sources:

http://www.ipm.ucdavis.edu

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