Plants that support Great black wasp
6 plants
American-hemp
Apocynum cannabinum
perennial herb
Adult wasp visits flowers for nectar; important predator of katydids
Bay Area native
California Goldenrod
Solidago velutina ssp. californica
perennial herb
Adult nectar source during activity period Jul-Oct
Bay Area nativeKeystone species
Red-flowering buckwheat
Eriogonum grande var. rubescens
perennial herb
Nectar source for adult wasp foraging
Bay Area native
St. Catherine's Lace
Eriogonum giganteum
perennial herb
Adult nectar foraging during peak flowering season
Bay Area native
Western Virgin's Bower
Clematis ligusticifolia
vine
Adult energy source during hunting season
Bay Area native