Japanese spindle
Also known as
Japanese euonymus, Evergreen spindle, Evergreen euonymus, Green euonymus, Box-leaf euonymus
Keep this plant’s care guide close at hand.
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Euonymus japonicus is a dense, broadleaf evergreen shrub valued for its glossy, leathery leaves and exceptional tolerance of wind, salt spray, and pruning. Typically 1.5–4 m tall in cultivation, it forms neat hedges and foundation plantings, with many variegated cultivars displaying cream, yellow, or gold margins. Leaves are opposite, elliptic to obovate, and finely serrate; inconspicuous greenish flowers appear in late spring to early summer, followed by small capsules that may split to reveal orange arils. It thrives in well-drained soils and adapts to coastal conditions, urban pollution, and periodic drought once established. Responsive to clipping, it can be trained as formal hedging, topiary, or kept compact in containers. The species is susceptible to euonymus scale and occasional powdery mildew if stressed or overcrowded, so good airflow and vigilant monitoring are essential. Native to East Asia, it is hardy in mild to warm temperate regions and is widely planted in landscapes where year-round structure and foliage color are desired.
Taxonomy
Properties & Requirements
How to care for Japanese spindle
Water
Keep newly planted shrubs evenly moist for the first growing season with deep, infrequent soakings to encourage a broad root system. Once established, water when the top 5–8 cm of soil is dry; the plant is moderately drought-tolerant but performs best with consistent moisture. Avoid waterlogging and ensure sharp drainage, especially in heavy soils or containers. For potted specimens, allow the top 2–3 cm to dry between waterings and periodically flush the pot to prevent salt buildup.
Light
Grows in full sun to partial shade. Aim for 4–8 hours of direct light; variegated cultivars need more sun for vivid color but can scorch in intense afternoon sun in hot regions—there, provide light afternoon shade. In deep shade, plants become leggy with reduced variegation. Indoors (not typical), place in the brightest location with ample airflow. Ensure light reaches lower stems by periodic thinning to keep hedges dense.
Nutrients
Feed in early spring with a balanced, slow-release fertilizer (e.g., 10-10-10 or 14-14-14) at label rates, and top up with compost or well-rotted organic matter to improve soil structure. Container plants benefit from a half-strength, balanced liquid feed every 4–6 weeks during active growth. Avoid high-nitrogen surges that encourage succulent growth attractive to euonymus scale. Do not fertilize in late summer in cold climates to prevent tender growth before frosts.
Temperature
Hardy in USDA Zones 7–10, with best growth between 15–27°C. Established plants tolerate brief light freezes; foliage and stems may be damaged near −12°C, especially in exposed sites. In hot climates, it withstands summer heat if soil moisture is adequate, though extreme reflected heat can scorch variegated leaves. Provide wind protection in very cold, desiccating winter winds, and avoid sudden warm–cold swings by maintaining mulch and even soil moisture.
