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Item Number: SNV7092

Osha Seeds

Native to the Rocky Mountains

Osha seeds are a meaningful choice for home herbalists, conservation gardeners, and small-scale growers looking to cultivate a culturally significant and ecologically valuable native plant. Native to the high elevations of the Rocky Mountains and Southwest, Osha is a perennial herb traditionally used to support respiratory and immune health. Its fern-like leaves and umbel-shaped white flowers blend beautifully into woodland gardens or shaded borders.

Osha thrives in partial shade and well-drained, humus-rich soils that mimic its native mountain habitat. Seeds require cold stratification to germinate and may take several weeks to sprout, rewarding patient growers with long-lived, deep-rooted plants. Because wild Osha populations are under pressure from overharvesting, growing this herb from seed helps promote sustainable, ethical herbal practices and biodiversity.

Whether you’re establishing a native plant sanctuary, enriching your permaculture design, or growing your own apothecary garden, Osha offers deep roots—literally and culturally. Sow seeds in fall or stratify before spring planting, and anticipate flowers by the second or third year of growth.

For more beneficial and native herbs, explore our full collection of herb seeds.

Osha – Ligusticum porteri

Did You Know? Osha is also called “bear root” because bears have been observed digging and eating its roots after hibernation, leading many to believe in its restorative powers.

Soil Temperature: Above 50°F
Planting Depth: 1/4" topped with a layer of organic materia
Germination: 6-12 weeks
Height At Maturity: 24"–36"
Days To Maturity: 2–3 Years
Sun/Shade: Full Sun to Partial Shade
Spacing After Thinning: 24"
Approx. Seeds per Pack: 30 Seeds

Quantity Discounts for Osha Seeds
Buy 5 for $4.00 each
Buy 10 for $3.80 each
$4.49
Next-day shipping available

Check Your Zone Compatibility:

Shipping Information

Ships from Northern CA.

Shipping Weight: 0.01 lb

Dimensions: 5.0"L x 2.625"W x 0.1"H

Features

  • Does Not Require Support
  • Good for Drying
  • Native

Characteristics

USDA Growing Zone: 3 - 10
Approximate Harvest Time : Early Summer
Approximate Harvest Time : Late Summer
Growth Habit : Upright
Life Cycle : Perennial
Plant Usage : Medicinal Plant
Planting Time : Fall
Seed Unit Sizes : Seed Pack
Starting Location : Direct Sow
Sun Requirements : Full Sun/Part Sun
Useful Plant Part : Root

Planting & Care

Soil & Water:Prefers full sun to part shade and a thick mulch.

Planting & Growing:Sow in outdoor conditions in garden bed or flats. Cover with 1/4" soil and a light layer of organic matter over that. Start in the fall to experience cold conditions for spring germination. (Requires vernalization of 60 days.) Germination takes up to 12 weeks, Thin to 6" apart.

Useful Information

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