Dragonfly Swarms Blanket Dolores Park as SF Sees an Unusually Buggy Summer

Unusually large swarm of dragonflies invades California

From grassy fields to backyard sage patches, the San Francisco area is seeing a noticeable spike in dragonflies this summer, a trend local entomologists attribute to weather, wind and a steady supply of prey.

Dragonfly Swarms Blanket Dolores Park as SF Sees an Unusually Buggy Summer

Unusually large dragonfly swarms are lingering over San Francisco this summer, with Dolores Park sage patches drawing dense concentrations, experts say.