Southern Oregon’s diverse climate supports a variety of pollinator species, each playing a vital role in the ecosystem. Here are details on some key pollinators you might encounter and attract with a pollinator garden:
Western Honey Bee (Apis mellifera)
Description: A social bee with a fuzzy body, ranging from 0.5 to 0.6 inches, known for its black and yellow stripes.
Habitat: Nests in hives or hollow trees; common in the Rogue Valley and surrounding areas.
Activity: Active from spring to fall, peaking in summer when nectar is abundant.
Preferences: Attracted to lavender, sunflowers, and Oregon grape. Needs water and sheltered nesting sites.
Role: Pollinates crops like almonds and fruits, contributing to local agriculture.
Western Bumble Bee (Bombus occidentalis)
Description: A robust bee, 0.6 to 1 inch long, with black and yellow bands and a white tail.
Habitat: Found in meadows and woodlands, including the Siskiyou Mountains.
Activity: Active from early spring to late fall, tolerating cooler weather.
Preferences: Favors red flowering currant, penstemon, and yarrow. Needs undisturbed ground for nesting.
Role: Excellent pollinators of native wildflowers and berries, aiding biodiversity.
Western Tiger Swallowtail (Papilio rutulus) *
Description: A large butterfly, 3 to 4 inches, with striking yellow and black wings.
Habitat: Prefers open woodlands and gardens in Southern Oregon.
Activity: Flies from April to September, with peaks in summer.
Preferences: Drawn to milkweed, asters, and ceanothus. Requires sunny spots and host plants for caterpillars (e.g., willow).
Role*: Pollinates a wide range of flowers, supporting plant reproduction.
Mason Bee (Osmia lignaria) *
Description: A solitary bee, 0.5 to 0.6 inches, metallic blue or green.
Habitat: Nests in pre-existing holes in wood or stone, common in rural areas.
Activity: Active in spring, especially March to May.
Preferences: Attracted to early-blooming plants like Oregon sunshine and fruit trees. Needs mud for nest sealing.
Role*: Highly efficient pollinators of orchards and native shrubs.
Hummingbirds (e.g., Anna’s Hummingbird,* Calypte anna)
Description: Small, iridescent birds, 3.5 to 4 inches, with red or green plumage.
Habitat: Found in gardens, forests, and urban areas year-round in Southern Oregon.
Activity: Active year-round, with increased feeding in spring and summer.
Preferences: Favor tubular flowers like columbine and salvia. Need feeders with sugar water (1:4 ratio) in winter.
Role*: Pollinate deep-throated flowers, supporting native plant diversity.
Supporting Pollinators in Southern Oregon
These species thrive with native plants, water sources, and pesticide-free environments. Southern Oregon’s dry summers and wet winters mean providing consistent moisture and bloom cycles (e.g., spring lupine, summer lavender, fall aster) is key.
Avoid broad-spectrum insecticides, and add nesting aids like bee hotels or brush piles. Monitoring their activity can help tailor your garden to their needs.