Scarlet Pimpernel

Pest: Scarlet pimpernel (Anagallis arvensis)

Pest Type: Annual Broadleaf Weed

Major Identifying Features: Low-growing, branching, grows up to 1-1/3 feet tall, upright growth habit, stalkless leaves, opposite leaves, five salmon-orange (sometimes blue) colored petals, flowers remain closed during rain or cloudy weather, seeds are covered with small wart-like projections

Life Cycle: Winter or summer annual, occasionally biennial, blooms from March to July

Pest Rating: Moderate

Management Rating: Easy

Host/Season/Outbreak Information: It grows throughout California up to 3300 feet elevation except in deserts and Great Basin, inhabits agricultural land, ornamental beds, turf, water body margins, and other disturbed areas

Damage Information: Can be toxic to livestock and human

Management Options: This weed is susceptible to cultivation and most herbicides

Sources:

http://www.massey.ac.nz/massey/learning

http://www.ipm.ucdavis.edu

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