13 named cultivars

shrub

Blue Holly

Ilex x meserveae

The Story

Plant Bio

Ilex x meserveae, the blue holly, is a dense broadleaf evergreen shrub bred to combine the look of English holly with real cold hardiness. It reaches three to eight feet on an erect, rounded or vase-shaped frame, carrying spiny blue-green leaves on distinctly purple stems, and female plants set showy red berries that persist into spring.

Male and female flowers are on separate plants, so a female such as 'Blue Princess' sets no fruit at all without a male such as 'Blue Prince' within range — buy both, and check which one you are being sold, because this is far and away the commonest reason a blue holly never berries. The berries themselves cause mild stomach upset if eaten.

Uses & Benefits:

Glossy blue-green spiny foliage year round, with heavy red fruit on female plants through winter.

Hardier than English holly and dense enough for a secure, evergreen boundary hedge.

Berries feed songbirds through winter, and the flowers support bees including holly's own specialist species.

Essentials

At a Glance

Plant Type

Shrub

Height

69 inches

Width

84 inches

Light

Full Sun, Partial Sun

Zones

5, 6, 7, 8

Water

Moderate

Humidity

Moderate

Lifespan

Perennial

Native To

Garden hybrid of Asian and European species

Toxicity

Berries cause mild stomach upset

Planting

How to Grow

Plant a male within about fifty feet of any females.
Choose full sun to partial shade and acid, well-drained soil.
Water deeply through the first two summers.
Mulch to keep the shallow roots cool and moist.
Prune lightly in late winter if shaping is needed.
Avoid any spot where water stands after rain.

Pro Tip

One male will pollinate several females, so buy one 'Prince' to every three or four 'Princess' rather than pairing them off.

Keep It Thriving

Care Guide

Do

Plant a male nearby for berries 💙
Give it acid, well-drained soil 🌱
Mulch over the shallow roots 🍂
Prune lightly in late winter ✂️

Don't

Buy a single female and expect fruit ❌
Plant it where water stands after rain ❌
Let children eat the berries ❌

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Evergreen hedge or screenFoundation planting with winter berry interestWildlife and songbird planting

Companion Plants

Camellia RhododendronHellebore Autumn Fern Mahonia

Multiply

Propagation Methods

Good to Know

Common Questions

Blue Holly questions

What zones can Blue Holly grow in?

Blue 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 Blue Holly deer resistant?

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

When does Blue Holly bloom?

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

Does Blue Holly need full sun?

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