Little Mallow

Pest: Little Mallow (Malva parviflora), Cheeseweed

Pest Type: Annual broadleaf weed

Major Identifying Features: Wrinkled fruit, upright growth, can grow bush-like up to 5 feet tall, flowers from March to September,

Life Cycle: Winter annual, reproduces by seed, tough seed coat with long viability

Pest Rating: Moderate

Management Rating: Easy to moderate

Host/Season/Outbreak Information: It is found throughout California to about 4900 feet elevation, inhabits agricultural areas and disturbed sites

Damage Information: Accumulates nitrates to concentrations toxic to cattle and poultry, aesthetic impact, decrease crop yields, can interfere with machinery, can host whiteflies and thrips and plant viruses

Management Options: Mechanical control by pulling young plants, hoeing and cutting, cultural control by planting competitive plants and mulching, chemical control can be done with orzalyin or pendimethalin (not for home owners)

Sources:

http://www.ipm.ucdavis.edu

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