UC IPM Home
HOME
SEARCH
ON THIS SITE
What is IPM?
Home & landscape pests
Agricultural pests
Natural environment pests
Exotic & invasive pests
Weed gallery
Natural enemies gallery
Weather, models & degree-days
Pesticide information
Research
Publications
Events & training
Links
Glossary
About us
Contact us
Printer-friendly version
Several native willow species occur commonly and can be difficult to differentiate from each other. Several can occasionally become weedy in irrigation and drainage ditches.
Photos by Joseph M. DiTomaso