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Plant library  ·  Conifers & Evergreens

Japanese Holly

Ilex crenata

Japanese holly is a dense evergreen shrub with small, glossy leaves and a naturally formal presence. At about 8 feet tall and wide, it can anchor an all-season boundary without reading as a bulky broadleaf shrub. Its boxwood-like foliage suits clipped hedges and topiary, while an unclipped plant can hold a rounded, structural role in a larger bed. It is hardy in USDA Zones 5 through 8.

Sunlight Full Sun
Water Moderate
USDA zones 5–8
Planning spacing 6 ft
Typical mature size 8 ft tall, 8 ft wide

Japanese Holly spacing and mature footprint

Space Japanese Holly 6 ft apart, measured center to center (1.8 m).

The mature spread is about 8 ft (2.4 m), so plants set at that distance grow together into a connected screen.

Treat 6 ft as a planning baseline — cultivar and local growing conditions shift the final footprint.

Compare with the full conifer and evergreen spacing chart

Three plants set 6 ft apart, center to center; shaded circles show the 8 ft mature spread.

Placement and use

Use Japanese holly where a continuous evergreen edge, backdrop, or foundation mass needs to remain legible through winter. A row can define the outside of a patio, driveway, or property line; keep it far enough from paths and walls that the mature canopy does not narrow circulation. Its dense, compact habit also works in grouped plantings, but reserve a reachable side for clipping and cleanup. For a formal hedge, set the planting line parallel to the feature it is meant to frame.[1][2]

Spacing and mature footprint

Plant on 6-foot centers for a connected hedge or screen, measuring from one plant’s center to the next. Each shrub may ultimately occupy about 8 feet of width, so neighboring canopies will overlap as the row fills in; this is useful for enclosure but calls for a pruning plan. In a mixed border, allow the full 8-foot footprint rather than packing perennials or access routes tightly against its base.

Sun, water, and soil

Give it a full-sun position and moderate moisture, with soil that drains well. Slightly acidic, moist soil is especially suitable, while poor drainage or a site that repeatedly dries hard can complicate establishment. Keep the root zone out of low spots where water collects, and use a broad planting bed rather than a narrow strip bounded by pavement on both sides.[1][2]

Seasonal notes

The evergreen canopy keeps hedge lines, bed corners, and foundation plantings visually occupied year-round. Small spring flowers are followed by black fruit on pollinated female plants when a compatible male is nearby. Plan the shrub primarily for foliage and structure, leaving flowering perennials in front with enough clearance that their seasonal growth does not obstruct maintenance of the holly line.[1][2]

Planning caveats

Avoid exposed positions that receive harsh winter winds, particularly where the shrub must hold a crisp formal outline. It can also struggle in hot, humid summer climates. If using several plants as a hedge, confirm the selected nursery form before drawing the final layout: Japanese holly cultivars vary substantially in mature size and shape, even though this plan allows for an 8-foot-wide shrub.[1][2]

Growing facts

Botanical name
Ilex crenata
Type
Shrub
Category
Conifers & Evergreens
Lifecycle
perennial
USDA hardiness zones
5–8
Sunlight
Full Sun
Water
Moderate
Planning spacing
6 ft
Typical mature size
8 ft tall, 8 ft wide
Plan a garden with japanese holly

References

  1. Box-leaved Holly - Ilex crenata — North Carolina Extension Gardener Plant Toolbox
  2. Ilex crenata - Plant Finder — Missouri Botanical Garden