As temperatures start warming up across Central California, wasps are becoming active again. Spring—especially March through May—is when wasp season officially begins, and it’s also the best time to prevent a much bigger problem later.
Right now, overwintering queen wasps are emerging and starting new colonies. These early nests are small, often tucked under eaves, patio covers, or in other sheltered areas. At this stage, activity is minimal—but it won’t stay that way for long. A single queen can produce thousands of wasps by summer.
In our area, the most common species include paper wasps, yellowjackets, and hornets. Paper wasps tend to build small, open nests under rooflines, while yellowjackets often nest underground and become more aggressive as their colonies grow. Hornets, which are larger, typically build aerial nests in trees or structures.
This time of year, a quick inspection around your home can make a big difference. Look closely at roof eaves, garage corners, sheds, and patio ceilings. Catching a nest early means it can be handled quickly and safely—before the colony expands.
Prevention is also key. Keep outdoor trash sealed, clean up food and drink spills, and eliminate standing water where possible. These small steps help reduce what attracts wasps to your property in the first place.
The bottom line is simple: spring is your window to stay ahead of wasp season. Taking action now can save you from dealing with a large, aggressive colony in the middle of summer.
