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Native Habitat:

Moist meadows, streambanks, and open forest edges in western North America, including the Willamette Valley. Prefers damp soils with good drainage.

 

Bloom Time:

June – September

 

Growth Habit & Mature Size:

Perennial herb, 1–3 feet tall, with erect stems and lance-shaped leaves. Produces dense spikes of small, bright pink to magenta flowers.

 

Light & Soil Requirements:

Full sun to partial shade; prefers moist, well-drained soils. Tolerates seasonal wetness but not prolonged waterlogging.

 

Willamette Valley Native Companion Plants:

Camassia quamash, Achillea millefolium, Sidalcea campestris, Eriophyllum lanatum, Festuca roemeri.

 

Urban Garden Function:

Adds vertical interest, color, and seasonal bloom to urban meadows, riparian gardens, and naturalized landscapes. Works well in layered plantings with grasses and native perennials, creating habitat-friendly and aesthetically dynamic gardens.

 

Wildlife Supported:

Flowers attract native bees, hummingbirds, and butterflies. Foliage provides shelter for small insects and ground-dwelling invertebrates.

 

Historical Use:

Used by Indigenous peoples for minor medicinal purposes and valued ornamentally for naturalized and riparian plantings.

Epilobium densiflorum | Spike Primrose

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