Indian Plum (Oemleria cerasiformis) - Oregon Plum / Oso Berry Fruit Shrub Seeds

The Indian Plum (Oemleria cerasiformis), also known as Oregon Plum or Oso Berry, is one of the first shrubs to flower in early spring, heralding the end of winter with clusters of creamy white blossoms. Native to the Pacific Northwest, this hardy deciduous shrub produces sweet, dark purple fruits loved by birds, pollinators, and foragers alike.

Ideal for native plant gardens, wildlife habitats, and naturalized landscapes, Indian Plum provides both ornamental beauty and ecological value. Its graceful foliage turns golden in fall, and its fast growth makes it a popular choice for understory planting and erosion control.

Features

• 🌸 Early Bloomer: One of the first native shrubs to flower in spring.
• 🍒 Edible Fruits: Produces small purple plums with a mild, sweet flavor.
• 🐝 Wildlife Friendly: Attracts bees, hummingbirds, and birds.
• 🌿 Fast Growing: Reaches maturity quickly, perfect for naturalizing.
• 🌳 Native to North America: Thrives in woodland and shaded gardens.
• 🌎 Non-GMO Seeds: Naturally grown, untreated seed source.

Specifications

• Common Name: Indian Plum / Oso Berry / Oregon Plum
• Scientific Name: Oemleria cerasiformis
• Plant Type: Deciduous shrub
• USDA Zones: 5 – 9
• Mature Height: 6 – 15 ft (1.8 – 4.5 m)
• Spread: 5 – 12 ft (1.5 – 3.6 m)
• Light Requirements: Full sun to partial shade
• Soil Type: Moist, well-drained soil
• Soil pH: 6.0 – 7.5
• Bloom Time: Late winter to early spring
• Fruit Season: Summer
• GMO Status: 100% Non-GMO
• Growth Rate: Fast
• Foliage: Green turning yellow in fall
• Pollination: Dioecious (male and female plants required for fruiting)

Planting Guide

• Sowing Time: Fall or early spring.
• Seed Preparation: Stratify seeds in moist sand for 90–120 days at 35–40°F.
• Sowing Depth: ¼ inch (0.6 cm).
• Soil Mix: Loamy or sandy soil, rich in organic matter.
• Watering: Keep soil consistently moist during germination.
• Germination Time: 2–4 months after stratification.
• Transplanting: Move seedlings outdoors after last frost.
• Spacing: 4–6 ft apart for hedges or natural clusters.

Care Tips

• Prefers dappled light or morning sun.
• Water regularly during establishment, then moderately once mature.
• Mulch around the base to conserve moisture.
• Prune after fruiting to maintain shape and encourage new growth.