Osha Seeds

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