Species

Ilex crenataJapanese Holly

18 other cultivars

shrub

Japanese Holly

Ilex crenata 'Green Hedge'

The Story

Plant Bio

Ilex crenata is a dense, upright evergreen shrub native to East Asia, characterized by small, glossy, dark green leaves with scalloped margins. The species produces insignificant white flowers in spring followed by small black berries on female plants, making it a highly adaptable structure plant for temperate landscapes.

'Green Hedge' is a horticulturally selected clone distinguished by its particularly tight, narrow, and upright growth habit. This cultivar serves as an exceptional boxwood alternative, responding beautifully to precise shearing to maintain formal shapes.

Uses & Benefits:

Provides a dense, fine-textured, glossy green backdrop that holds its color year-round and shears beautifully into formal shapes.

Serves as an excellent, disease-resistant alternative to boxwood for formal hedging, foundation plantings, and topiary.

Offers dense evergreen nesting cover and shelter for small birds, while female plants produce small berries eaten by local wildlife.

SpeciesIlex crenataJapanese Holly

Essentials

At a Glance

Plant Type

Shrub

Height

118"

Width

118"

Light

Full Sun, Partial Sun

Zones

5, 6, 7, 8

Water

Medium

Humidity

Moderate

Lifespan

Long-lived

Native To

East Asia

Toxicity

Toxic to humans, dogs, cats, and horses

Bloom period

Spring

In flower about 3 months of the year

Planting

How to Grow

Select a planting site in full sun to partial shade with moist, organically rich, and well-draining soil.
Test the soil pH to ensure it is acidic to slightly acidic, ideally between 4.5 and 6.5, to prevent nutrient deficiencies.
Dig a hole twice as wide as the root ball and set the plant at the same depth it was growing in its container.
Backfill with native soil amended with organic matter, water deeply, and apply a layer of organic mulch to retain moisture.

Pro Tip

Never cut back hard into old, leafless wood, as Japanese holly fails to regenerate from bare interior branches. Additionally, ensure the soil remains acidic and well-drained, as alkaline pH or waterlogged clay will rapidly trigger root rot.

Keep It Thriving

Care Guide

Do

Prune twice a year, once in late spring after the new growth flush and again in late summer, to maintain a tight hedge shape.
Apply a balanced, slow-release fertilizer formulated for acid-loving plants in early spring.
Provide regular irrigation during extended dry spells, especially while the root system is establishing.

Don't

Do not plant in heavy, poorly drained clay soils or areas prone to standing water.
Do not prune hard into bare, leafless old wood, which will result in permanent bare patches.
Do not apply lime or other soil amendments that raise the pH, as the plant is highly sensitive to alkaline conditions.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Mulch
Pest Check
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Formal HedgesFoundation PlantingsTopiaryBorder EdgingPrivacy Screens

Companion Plants

Rhododendron Pieris japonica Vaccinium Camellia

Multiply

Propagation Methods

Good to Know

Common Questions

Japanese Holly questions

What zones can Japanese Holly grow in?

Japanese Holly is hardy in USDA Zones 5–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Japanese Holly deer resistant?

Not reliably. Deer may browse Japanese Holly, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Japanese Holly bloom?

Japanese Holly typically blooms in spring through spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Japanese Holly need full sun?

Japanese Holly does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.