Japanese Aralia Plant Care

Japanese Aralia (Fatsia japonica) belongs to the Araliaceae family within the Fatsia genus. Japanese Aralia is native to southern Japan and southern Korea. Japanese Aralia is also known as Fatsia, False Castor Oil Plant.

Japanese Aralia displays a large, architectural shrub growth habit, reaching up to 6 inches tall with a spread of approximately 6 inches. Japanese Aralia produces creamy white, spherical clusters.

Leaf size: approximately 12 inches.

Fatsia japonica requires watering every 7–14 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.

Japanese Aralia thrives in bright indirect to low light light conditions. The optimal light range is 250–1000 lux. Avoid placing Japanese Aralia in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Fatsia japonica grows best at temperatures between 60°F and 75°F. Japanese Aralia prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Rich, well-draining soil with added organic matter like compost or peat moss. Good drainage is essential for Japanese Aralia to prevent waterlogging, which leads to root rot and fungal issues.

Repot every 2-3 years in spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.

Japanese Aralia can be propagated through stem cuttings, division.

Japanese Aralia is susceptible to spider mites, aphids, scale insects. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Japanese Aralia grows outdoors in USDA Zone 7a – 10b. Native to southern Japan and southern Korea, Japanese Aralia is adapted to warm climates. In cooler regions, grow Japanese Aralia as a houseplant or bring it indoors before the first frost.