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Osha

Ligusticum porteri, Apiaceae

Zones
3–7
Layer
Herbaceous
Lifespan
Perennial
Growth
Slow

Guild Roles

ProducerPollinator Attractor

Growing Conditions

Sun

Partial Shade (preferred)

Water

Moderate (established)High (seedling)

Soil pH

6.5 – 7.5

Tolerances

Drought
Frost
Heat
Pest Resistance
Disease Resist.

Companion Plants

Fendler's CeanothusCeanothus fendleri
Nitrogen FixationWind Protection
Great AngelicaAngelica atropurpurea
Pollinator SharingBeneficial Insect Habitat
Alpine LovageLigusticum mutellina
Pollinator SharingBeneficial Insect Habitat

Antagonistic Plants

Sichuan LovageLigusticum chuanxiong

Two Ligusticum species may compete for similar root space and exhibit allelopathic effects

Uses

Functions

Respiratory MedicineHigh Altitude AdaptationNative Plant RestorationPollinator Habitat

Edible Parts

Roots

Medicinal Uses

Respiratory SupportCough SuppressantAntiviralImmune EnhancementAltitude Sickness

Common Questions

What zones does Osha grow in?

Osha grows in USDA hardiness zones 3 through 7.

What are good companion plants for Osha?

Good companions for Osha include Fendler's Ceanothus, Great Angelica, Alpine Lovage.

Design guilds with Osha and see companion relationships visually.

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