How to Grow Autumn Olive
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Autumn Olive
Elaeagnus umbellata
shrubAutumn Olive is a deciduous to semi-evergreen nitrogen-fixing shrub native to Asia, prized for its silvery foliage and abundant red berries. It forms a dense, spreading shrub that can reach 12-20 feet tall and wide. This hardy, low-maintenance plant improves soil fertility through its symbiotic relationship with nitrogen-fixing bacteria in root nodules.
When should you plant Autumn Olive in your zone?
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Example Autumn Olive timeline · Pittsburgh, PA (Zone 6b)
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Plant Autumn Olive
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Autumn Olive
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Autumn Olive dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-9, extremely cold and heat hardy
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Establishment (Year 1)
12 monthsYoung shrub focuses on root development with sparse foliage growth; may appear slow-growing initially
Water regularly to establish deep roots; mulch base to retain moisture; avoid heavy pruning; protect from extreme wind
Vegetative Growth (Years 1-2)
12-24 monthsShrub develops dense branching and silvery-green compound leaves; canopy expands significantly
Minimal fertilizer needed; allow natural form to develop; light pruning for shape if desired; nitrogen fixation begins in root nodules
Flowering (Spring, March-April)
2-4 weeksTiny, fragrant, pale yellow flowers appear in clusters along branches before or as leaves emerge
Flowers attract pollinators; ensure cross-pollination with another Autumn Olive plant for better berry set; weather-dependent blooming
Fruiting (Late Summer-Fall, August-October)
8-12 weeksSmall red berries with silver speckles develop in abundance; berries ripen progressively and become sweeter after frost
Berries persist on branches into winter; no special care needed; birds and wildlife will harvest naturally; hand-harvest if desired
Dormancy (Winter)
3-4 monthsShrub becomes semi-dormant; foliage may drop or persist depending on climate; branch structure visible
No active care needed; extremely cold hardy; prune in late winter if structural work needed; plan for spring planting
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Hand-pick beetles in early morning; use pheromone traps away from plant; neem oil spray in severe cases; typically minor damage
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Strong water spray to dislodge; insecticidal soap for heavy infestations; encourage natural predators like ladybugs; rarely requires intervention
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Increase humidity with water spray; neem oil or sulfur dust; rarely problematic on established plants
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Dormant oil spray in late winter; horticultural oil during growing season; pruning of heavily infested branches
Uses
Fresh eating and juice
CulinaryTart-sweet berries contain high levels of lycopene (15-40 times higher than tomatoes) and can be eaten fresh, dried, or processed into nutritious juice and jams. Flavor improves significantly after frost. [source]
Nutritional supplement and antioxidant
MedicinalRich in vitamins A, C, and E, plus antioxidants and bioflavonoids that support immune function and cardiovascular health. Traditional use in Asian medicine for vitality and longevity. [source]
Nitrogen fixation for soil improvement
HouseholdThrough symbiotic relationship with Frankia bacteria in root nodules, Autumn Olive fixes atmospheric nitrogen into bioavailable form, enriching soil and reducing need for synthetic fertilizers. Beneficial in agroforestry and permaculture systems. [source]
Wildlife food and habitat
WildlifeAbundant berries provide crucial fall and winter food for birds, deer, and small mammals. Dense branching creates nesting and shelter habitat. Fragrant flowers support early spring pollinators. [source]
Natural dye source
CraftLeaves and berries can be used to create natural dyes ranging from yellow to green and brown, depending on mordants used. Traditional dye plant in some Asian cultures. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Berries ripen August-October and are sweetest after frost exposure. Harvest by hand-stripping branches or spreading cloth beneath and shaking branches. Berries can be eaten fresh, frozen, dried, or processed into juice, jam, and wine. Pick when fully red and slightly soft. Birds naturally harvest berries, so plan accordingly if wildlife feeding is desired.
Fun Facts
- 🌱 Autumn Olive can fix up to 50-150 pounds of atmospheric nitrogen per acre annually through its root nodule bacteria, making it as effective as legume crops and valuable for restoring degraded soils.
- 🌱 Despite its appeal to foragers, Autumn Olive is considered invasive in many regions and spreads rapidly through bird-dispersed seeds; birds can deposit seeds widely, establishing new plants in unintended areas.
- 🌱 The plant has been cultivated in Asia for over 3,000 years and was introduced to North America in the 1830s as a wildlife food plant and erosion control shrub, but has since naturalized extensively.
Gardening Terms
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