shrub

Straight & Narrow Japanese Holly

Ilex crenata 'Straight & Narrow'

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Shrub

Height

96 inches

Width

30 inches

Light

Full Sun, Partial Sun

Zones

5, 6, 7, 8, 9

Water

Medium

Humidity

Average

Lifespan

30+ years

Native To

Japan, Korea, China

Toxicity

Berries are mildly toxic if ingested

The Story

Plant Bio

Ilex crenata, or Japanese Holly, is a versatile evergreen shrub with small, spineless leaves, often used as a substitute for boxwood in landscape design. 'Straight & Narrow' is a strongly columnar cultivar that maintains a tight, upright form without pruning, making it an exceptional choice for narrow spaces. It provides a strong vertical element in the garden, perfect for formal hedges, screens, or accents.

Bloom Period:

EarlyLate

Uses & Benefits:

'Straight & Narrow' provides a strong, formal, vertical element, adding architectural interest and structure to the landscape year-round. Its fine-textured, dark green foliage creates a handsome backdrop for other plants.

Its naturally narrow, columnar habit makes it an ideal choice for creating privacy screens or hedges in tight spaces where wider plants won't fit. It can also be used to frame doorways or anchor the corners of a foundation planting without extensive pruning.

While the flowers are inconspicuous to humans, they provide nectar for bees and other small pollinators. The dense evergreen structure offers year-round shelter and protection for small birds.

Marketplace

Where to Buy

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Planting

How to Grow

Select a site with at least 4-6 hours of sun and excellent drainage.
Amend soil with compost to improve structure and fertility.
Dig a hole as deep as the root ball and twice as wide.
Place the plant in the hole, ensuring it is straight and level.
Backfill with soil, gently tamping to remove air pockets.
Water thoroughly after planting and apply mulch.

Pro Tip

Plant in acidic, well-drained soil to avoid black root rot, a common issue for Japanese hollies in heavy, wet soils.

Keep It Thriving

Care Guide

Do

Ensure soil is consistently moist but not waterlogged.
Provide good air circulation.
Fertilize in early spring to support healthy growth.
Site in a location protected from harsh winter winds in colder zones.

Don't

Don't plant in heavy clay or alkaline soils.
Avoid letting the soil dry out completely, especially for new plants.
Don't plant too deep; keep the root flare at soil level.
Avoid shearing in late summer or fall.

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Strong vertical accent for narrow spacesFormal, upright hedge or privacy screenElegant container 'thriller' element

Companion Plants

Hydrangea paniculata Buxus 'Green Velvet' Spiraea japonica Heuchera Hosta

Multiply

Propagation Methods

Good to Know

Common Questions

Straight & Narrow Japanese Holly questions

What zones can Straight & Narrow Japanese Holly grow in?

Straight & Narrow Japanese Holly is hardy in USDA Zones 5–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Straight & Narrow Japanese Holly deer resistant?

Yes — Straight & Narrow Japanese Holly is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Straight & Narrow Japanese Holly bloom?

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

Does Straight & Narrow Japanese Holly need full sun?

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