- Author: Elaine Lander
Brooms are shrubs which were originally planted in California as ornamentals and for erosion control, but are now considered to be invasive weeds since they are highly competitive. They crowd out native plants and form impenetrable barriers to wildlife. There are four common species of broom in California: Scotch broom, French broom, Spanish broom and Portuguese broom.
In the newly revised Pest Notes: Brooms, UCCE advisor Scott Oneto and UC Davis weed scientists Joe DiTomaso and Guy Kyser explain the issues with planting these invasive species. The publication includes expanded sections on biology and management and updated herbicide...
(Credit: Jack Kelly Clark)
Anthracnose is a group of fungal diseases that infect many trees and shrubs, causing dark lesions on leaves and cankers on twigs and stems. In some areas of California, vegetables and turfgrass can also be infected with anthracnose.
Symptoms of anthracnose vary by plant host and weather conditions. High humidity and dense canopies can exacerbate this common disease. Management relies on planting resistant cultivars of landscape plants along with careful maintenance of susceptible cultivars, such as pruning and removal of fallen leaves and twigs.
Authors Jim Downer (UCCE Ventura County), Steven Swain (UCCE Marin County), and Amanda Crump (UC Davis Plant Sciences) recently revised
As you practice social distancing during COVID-19, you may find yourself spending more time in the garden. As we move into nice weather, we are sharing a few gardening tips for pest management.
Powdery Mildew
Check for signs of powdery mildew on fruit trees, landscape ornamentals, and vegetables. Symptoms can vary by plant species but common symptoms include white powdery spots developing on both sides of the leaf, leaves that turn yellow or brown and fall off, twisting and distortion of leaves and shoot. Prune out small infestations and remove infected material to reduce spread.
For more on this...
As you practice social distancing during COVID-19, you may find yourself spending more time in the garden. As we move into nice weather, we are sharing a few gardening tips for pest management.
Fertilizing
Now is the time to fertilize caneberries, citrus, fruit trees, palms, and heavily-flowering shrubs with slow release products. Maintaining good fertilization can keep your plants vigorous and help prevent pest problems.
Read more about plant-specific fertilization information on our website and see our other April gardening tips on
As you practice social distancing during COVID-19, you may find yourself spending more time in the garden. As we move into nice weather, we are sharing a few gardening tips for pest management.
Composting
Turn your compost piles and maintain proper moisture. Keep compost bins covered, especially during April showers to avoid sogginess. Covered compost bins can be especially important in urban areas to exclude rodents and other wildlife. Read more about composting on our website.
Stay tuned for more gardening tips!
