Plants that support Sweat bee
14 plants
Arctic Butterbur
Petasites frigidus var. palmatus
perennial herb
Early season nectar and pollen source
Blue oak
Quercus douglasii
tree
Forage on oak catkins and flowers during spring bloom
Bristly Jewelflower
Streptanthus glandulosus subsp. glandulosus
annual
Early spring pollen collection
California Hedgenettle
Stachys bullata
perennial herb
Multiple Lasioglossum species forage on spring flowers for nectar and pollen
Cascade Canada Goldenrod
Solidago elongata
perennial herb
abundant pollen foragers on goldenrod inflorescences
Common Pearlyeverlasting
Anaphalis margaritacea
perennial herb
Multiple species utilize abundant summer nectar
Graceful Clarkia
Clarkia gracilis ssp. tracyi
perennial herb
Important early spring foraging resource
Harvest Brodiaea
Brodiaea elegans
geophyte
Native bee specialist on brodiaea flowers May-July
Ithuriel's Spear
Triteleia laxa
geophyte
Important native bee genus utilizing pollen resources during bloom
Red-flowering buckwheat
Eriogonum grande var. rubescens
perennial herb
Small bee specialist on buckwheat flowers
Scarlet Bugler
Penstemon centranthifolius
perennial herb
diverse genus using flowers for pollen provisioning
Silver bush lupine
Lupinus albifrons
shrub
Spring pollen provisioning
Western Columbine
Aquilegia formosa
perennial herb
Spring-summer active foraging Apr-Jul