University of California Rice On-line
University of California Rice On-line
University of California Rice On-line
University of California
University of California Rice On-line

Winged Primrose Willow

Winged Primrose

Small seedlings
Small plant growing in levee. Note “wings” in stem
Plants growing in canal
Large plant before flowering next to rice
Cross section of stem, showing “wings”
Flowering plant.
Flowers have 4 petals
Fruit case
Seeds from one case

 

Winged Primrose Information

UC IPM Website (under Emerging Pests in California)

2013 Rice Grower Meeting presentation: Winged Willow Primrose

UC Rice Blog posts:
New weed identified in California rice
Behavior of winged primrose willow & herbicide options for control

June 2012 Rice Briefs newsletter: Behavior of winged primrose willow and herbicide options for control

Butte County Agricultural Commissioner winged primrose willow page (management, identification, characteristics, maps) 

Photo credits: Luis Espino, UCCE; Jim Eckert, UC Davis; Evan Padgett, Butte County Agricultural Commissioner Department

Webmaster Email: mwquinton@ucdavis.edu