As the days get shorter and the temperatures begin to cool, now is the time to practice weed management for annual cool-season weeds. It's also not too early to consider management for weeds that emerge in springtime.
Using integrated pest management (IPM) methods can help reduce the presence of most weeds. In lawns, good practices such as proper watering, mowing, and fertilizing can help maintain healthy turfgrass. Likewise, in landscapes, hand-weeding, cultivation, and use of mulches can be effective in controlling weeds. More specific information about these and other IPM practices can be found in our Pest Notes publications on
Weeds in the landscape can be tough to manage. But there are many options for weed management using an integrated approach that combines nonchemical and chemical methods.
- Start by identifying the weeds you want to manage. UC IPM has a weed photo gallery that includes most weeds found in California landscapes. Knowing how a weed grows and spreads is an important step in successful control.
- Once you know what weed or weeds you're dealing with, consult the Pest Notes series on weeds to find specific management options.
This summer, you may have noticed what looks like a large dandelion plant covered in blisters growing in your lawn or landscape. It's known as bristly oxtongue, and if you examine or touch it you'll see and feel why. The stems and flower bracts are bristly, and the leaves are covered with blisterlike swellings that are prickly to the touch.
Bristly oxtongue can be an annual weed or a biennial weed. It thrives during the winter and warm weather and can grow to be over 3 feet tall. This weed spreads by seed, which can be dispersed long distances by the wind.
According to the book, Pests of the Garden and Small Farm, you can control bristly...