Japanese Aralia (Fatsia) Care: Spider Mites, Pruning, and Brown Hairs

Fatsia japonica (Japanese Aralia) likes cool temps, bright indirect light (north window), and consistently moist soil.

Spider Mite ID & Treatment

• Size: 5-6 fit on pinhead. Visible as moving dust under leaves.
• Brown hairs on stems: Natural, not pests.
• Soap spray: Liquid dish soap diluted as for dishes. Drench all surfaces.

Care Summary

• Water: When surface dry or slight wilt. Never let dry out fully.
• Water quality: Filtered/distilled if hard water.
• Fertilizer: Half-strength monthly May-Sept.
• Humidity: Misting helps little; soil moisture is key.
• Repot: Only when potbound (needs water every 2 days). One size up.
• Prune: Any point on main stem; new growth below cut.
• Flowers: Rare indoors; not a goal.

Cool winter temps (50-60°F) discourage spider mites.