These days, most people are wearing masks when out in public for personal protection for themselves or others. In nature, there are a few pests that have their own type of face coverings, markings, or that other types of protective covers or behavior.
Below are a few such pests that you might be encountering now in your gardens and landscapes.
Masked chafers are golden brown beetles with dark heads that give them their name. The adults are not typically considered pests although they do show up on window screens, in pools, or wander into the home. The immatures, white C-shaped grubs, are considers pests because they feed.../h2>
Invasive species are non-native plants, animals, or pathogens that can cause economic or environmental harm. This year, we will be spotlighting several different invasive species that are established in California to raise awareness and help reduce their spread. Stay tuned—we will be showcasing a different invasive species each day and where you can find more information.
Want to learn more about California Invasive Species Action Week? Check out the full schedule of...
Many parks, recreational areas, and outdoor venues in California are home to yellowjacket wasps (Vespula spp.). Yellowjackets are commonly attracted to human food items, creating a serious nuisance and a potential stinging threat. If found, nests (usually underground) can be effectively treated with targeted insecticide applications (e.g., dusts containing pyrethroids). However, baiting could be a feasible alternative method to suppress yellowjackets over a wide area, especially if nests cannot be located. Currently, only one active ingredient (esfenvalerate) is registered for use within bait in California to control yellowjackets,...
Cockroaches, or roaches, are probably some of the least welcome insects people encounter in their homes, kitchens, offices, restaurants, or landscapes. Indoor cockroaches can create significant public health problems by contaminating food and producing allergens.
To help manage both indoor and outdoor cockroaches, UC Cooperative Extension IPM Advisor Andrew Sutherland and UC Riverside entomologists Dong-Hwan Choe and Michael Rust tackle the challenge of cockroach management in the newly revised Pest Notes: Cockroaches.
What's new in this version?
Since it's critical to first identify.../h2>
Roses are popular ornamental plants grown in home gardens, parks, and other landscapes. Just like other plants, roses can be host to a number of insects and mite pests.
Roses can grow well with little to no pesticide use and numerous natural enemies, or “good bugs” exist to help hunt or parasitize common rose insect pests.
Find solutions for common invertebrate pests on roses in UC IPM's recently updated Pest Notes: Roses: Insects and Mites. This revised publication by rose experts Mary Louise Flint, Extension Entomologist Emerita, and John Karlik, UC Cooperative Extension Advisor, Kern County will help...