How to Grow Japanese Aralia
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Japanese Aralia
Fatsia japonica
shrubFatsia japonica is a bold, architectural evergreen shrub known for its large, deeply lobed palmate leaves that can reach 12 inches across. Native to Japan, this tropical-looking plant produces clusters of small white flowers in autumn followed by black berries. It thrives in moderate climates and is popular as an indoor houseplant in cooler regions.
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Example Japanese Aralia timeline · Pittsburgh, PA (Zone 6b)
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Plant Japanese Aralia
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 Japanese Aralia
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Japanese Aralia dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Zones 8b-11; grows best outdoors in mild, maritime climates with protection from extreme cold
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Get my Japanese Aralia timeline →Growth Stages
Establishment
3-6 monthsYoung plant with smaller leaves establishing root system; relatively compact growth form
Water regularly to keep soil moist during first season. Provide sheltered location. Mulch base to retain moisture and regulate temperature.
Vegetative Growth
Spring through early autumnRapid foliage expansion with characteristic large, deeply lobed leaves appearing. Plant reaches mature proportions.
Fertilize monthly during growing season (spring/summer) with balanced, diluted fertilizer. Prune to shape as desired. Ensure consistent moisture.
Flowering
September through NovemberDense umbels of small, creamy-white flowers appear at branch tips. Flowers are fragrant and attract pollinators.
Continue regular fertilizing and watering. Flowers are self-sufficient; no special care needed. Leave flowers if berries are desired.
Fruiting
November through FebruarySmall black berries develop from spent flowers. Berries are ornamental and attract birds in winter.
Maintain consistent moisture. Do not remove berries unless trying to control self-seeding. Berries persist through winter.
Dormancy/Winter
December through FebruaryGrowth slows significantly. Plant maintains foliage but appears less vigorous. Leaves may appear slightly darker.
Reduce watering; allow soil to dry slightly between waterings. Withhold fertilizer. Protect from freezing winds and temperatures below 50°F if possible.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Increase humidity through regular misting. Spray leaves with water to dislodge. Use neem oil or horticultural oil if severe. Improve air circulation.
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Remove with alcohol-soaked cotton swab. Spray with insecticidal soap or neem oil. Quarantine affected plants. Check regularly for reinfestation.
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Remove manually with soft brush. Treat with horticultural oil during dormant season. Apply insecticidal soap for crawlers.
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Use yellow sticky traps. Spray with neem oil or insecticidal soap. Increase humidity and air circulation. Treat repeatedly at 7-10 day intervals.
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Ensure well-draining soil. Avoid overwatering. Remove affected plant and repot in fresh soil. Improve drainage and air circulation.
Uses
Interior Decoration & Foliage Arrangement
HouseholdThe dramatic, large palmate leaves make Fatsia japonica an excellent tropical-looking houseplant for interior spaces, especially those lacking bright light. Stems with foliage are prized for dramatic floral arrangements and provide year-round greenery. [source]
Floral & Garden Design
CraftThe architectural form and bold foliage provide striking visual interest in shade gardens, creating structural elements and contrasting with finer-textured plants. The autumn flowers and winter berries extend ornamental appeal. [source]
Bird and Pollinator Support
WildlifeThe fragrant white flowers attract bees and other pollinators in autumn. The black berries provide food for birds throughout winter months, supporting wildlife in the garden. [source]
Traditional Asian Medicine
MedicinalIn traditional Japanese and Chinese medicine, Fatsia japonica has been used in herbal preparations for various health applications, though clinical evidence is limited. The plant is valued more for its ornamental properties in Western herbalism. [source]
Air Purification
HouseholdLike many houseplants, Fatsia japonica is believed to help filter indoor air and improve humidity levels through transpiration, making it beneficial for interior air quality. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Fatsia japonica is not typically harvested for consumption. Prune stems for foliage arrangements and decorative use by cutting just above a leaf node. Prune in late winter or early spring to shape plant and remove damaged growth. Harvest berries for ornamental purposes by cutting branches; berries persist well in floral arrangements.
Fun Facts
- 🌱 Fatsia japonica is sometimes crossed with Hedera helix (English Ivy) to create Fatshedera lizei, a hybrid plant that combines characteristics of both parents and is more compact than Fatsia.
- 🌱 The leaves can grow up to 12 inches across, making them among the largest of any commonly grown houseplant, and each leaf has 7-11 deep lobes resembling an open hand.
- 🌱 In its native Japan, Fatsia japonica is called 'yatsude' (八つ手), meaning 'eight-handed plant,' referring to the typically eight lobes of its palmate leaves, though leaf lobes often number 7-11.
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