- Author: Belinda Messenger-Sikes
After years of drought, we welcome rain in California. But we also recognize that rain can help spread a number of plant diseases. Rain and wind can splash bacteria and fungi from infected leaves, branches, and blossoms to uninfected parts of the tree. The fungal diseases anthracnose, peach leaf curl, scab, shot hole blight, and the bacterial disease fire blight can all be spread by rain splash. This ability to spread by water makes these diseases more common after a wet spring. With 2023 bringing quite a bit of rainfall and 2024 looking similarly wet, we want to focus on some common rain-dispersed diseases.
Anthracnose
Anthracnose affects many trees including almond, citrus, Chinese elm, and...
/h2>- Author: Lauren Fordyce
Spring is just around the corner and many types of fruit trees are starting to develop their leaves. If you are growing peaches or nectarines and are now seeing symptoms of peach leaf curl on new leaves, unfortunately it's too late to manage the disease.
According to University of California research, peach leaf curl can only be effectively managed during the fall and winter, after leaves have dropped but before buds swell in spring. After bud break (when new buds begin to open), you may notice symptoms on new leaves but at this point, there are no effective controls. Pesticides used against peach leaf curl prevent the disease as opposed to curing it. Currently there are no verified curative methods for controlling...
- Author: Elaine Lander
While you are outside gardening or inside doing your spring cleaning, you may have recently found small, round, speckled beetles you've never seen before. We've had several questions this past week about insects crawling around windowsills, found on screens, or noticed on outdoor plants, or fuzzy, oblong insects on carpets or rugs. What are they? While there are many insects starting to emerge from their winter rest, if you are finding small beetles like these, they could be carpet beetles!
Carpet beetles are pests of homes, warehouses, and museums. In California, there are 3 species that damage fabrics, carpets, and stored foods including the varied carpet beetle,...
While we are staying home during the pandemic, insects are most definitely not!
In fact, you may have seen different types of insects swarming over the last few weeks. Swarming is a reproductive behavior where certain insects leave their colonies in droves, mate, disperse, and establish new colonies. Most of these swarms are not successful and end up dying, but for those that are successful, spring is an optimal time for insect colonies to find new homes.
Honey bees are one type of insect that can swarm at this time of the year while looking for new nesting locations. A large number of bees may appear frightening, but most spring swarms of the European honey bee are very docile and unlikely to sting. Our
Spring is here which means pest activity is on the rise. Termites are one of the top pest concerns for many city dwellers and rural residents alike. The infographic shows some interesting facts about termites.
Here in California, there are three kinds of termites considered pests including subterranean termites, drywood, and dampwood termites. The Formosan termite is one kind of subterranean termite found in California, although in limited areas.
Treatments differ for each type of termite, but there are many things you can to reduce infestations. This includes removing wood piles and scrap wood around the home, keeping substructures dry and well ventilated, and finishing exterior wood with...