American Mountain Ash Tree Seeds

American Mountain Ash Tree Seeds are an excellent choice for growing a beautiful native ornamental tree known for its clusters of white spring flowers, bright red-orange berries, and colorful fall foliage. Sorbus americana is well suited for cooler climates and provides valuable food and habitat for birds and other wildlife.

Botanical Information

• Botanical Name: Sorbus americana
• Common Name: American Mountain Ash
• Family: Rosaceae
• Plant Type: Deciduous flowering tree
• Life Cycle: Perennial
• Native Range: Eastern North America
• Mature Height: 15–30 feet
• Mature Spread: 10–20 feet
• Growth Rate: Slow to moderate
• USDA Zones: 3–6
• Sun: Full sun to partial shade
• Soil Preference: Moist, fertile, well-drained soil
• Soil pH: Slightly acidic to neutral
• Water Needs: Moderate
• Drought Tolerance: Low to moderate
• Salt Tolerance: Low
• Deer Resistance: Moderate
• Wildlife Value: High; berries provide food for birds and other wildlife
• Container Friendliness: Suitable for containers when young
• Landscape Uses: Native gardens, woodland edges, wildlife gardens, naturalized areas, specimen plantings, and cooler-climate landscapes
• Germination Rate: 60–80%
• Pre-treatment: Requires 90–120 days of cold, moist stratification

Germination Instructions

Place the seeds in a sealable plastic bag containing slightly moist peat moss, sand, or seed-starting mix. Refrigerate at approximately 34–41°F for 90–120 days. Check periodically to ensure the medium remains slightly moist but not overly wet.

After cold stratification, sow the seeds approximately 1/4 inch deep in containers filled with a moist, well-draining seed-starting mix. Cover the containers with a humidity dome to maintain consistent moisture and humidity. Place them in a bright location with temperatures around 65–75°F.

Keep the soil evenly moist but not waterlogged. Germination may occur gradually, and some seeds may require additional time or another seasonal cycle before sprouting.

Growing Information

• Choose a location with full sun to partial shade.
• Plant in moist, fertile, well-drained soil.
• Provide consistent moisture during establishment.
• Avoid extremely hot, dry planting locations.
• Apply mulch around young trees to conserve moisture and regulate soil temperature.
• Keep mulch several inches away from the trunk.
• Protect young seedlings from excessive heat, drought, and browsing wildlife.
• American Mountain Ash performs best in cool northern climates.
• The tree produces clusters of white flowers followed by red-orange berries.
• Berries attract many species of birds and may remain on the tree into fall and winter.

Seed Quantities Available

• 1 oz. – Approximately 10,000 Seeds