American Holly

Scientific Name:  Ilex opaca

Light: Full sun to full shade

Zone: 6 through 9

Height:  15 to 50 feet

Width:  18 to 40 feet

Flowers: May to June, white or cream

Fruit/Seed:  red fleshy berry

Fall Color:  evergreen

Butterflies: host for spring & summer azure

Birds:   The firm bright red berries are consumed by 18 species of birds. The dense foliage also provides cover and nesting habitat for various songbirds.

Hummingbird:

Deer Resistant:  Yes but the berries are consumed by white-tail deer.

Insects/Pollinators:

Native: Carroll and all of Maryland

Idea Garden:

Categories: ,

Description

The attractive evergreen foliage and bright red fruit of this small tree make it a very popular for landscaping. Cuttings  are popular additions to Christmas wreaths and decorations.

It is important to plant males as well as females if berry production is desired; the gender ratio should be 1:10, males to females.  American hollies need to be protected from harsh winds. Holly plants prefer partial shade, with some full sun exposure during the day. Utilize containerized or balled and burlapped plants as bare root transplants have marginal success.

Cultivars/Varieties

Cultivars of I. opaca should be used for landscaping, since they will have superior appearance and utility to most seedlings. There are many cultivars to choose from, but those listed below are most winter hardy.

‘Canary’ – yellow-fruited with abundant fruit production.

‘Clarendon’  – dwarf, shrubby form reaching 8′ tall and much wider. It bears glossy olive-colored leaves and orange-red berries.

‘Croonenburg’ – Bears both female and male blooms on the same plant, thus it may bear red fruit without a separate pollinator. It is a columnar, dense tree with glossy leaves that are less spiny than normal.

‘Howard’ –  Nearly spineless, dark green leaves and abundant red fruit. The habit is columnar and dense.

‘Jersey Knight’ – Male form with good dark green foliage, good pollinator.

‘Jersey Princess’ – Widely considered one of the finest fruiting cultivars, holds its bright red fruit well into winter.

‘Maryland Dwarf’ – Mature height is around 3′ tall, but it may spread to 10′. The foliage is glossy and deep green.

‘Old Heavyberry’  – One of the best cultivars available, vigorous with large dark green leaves and profuse large red fruits, very good winter hardiness.

‘Steward’s Silver Crown’ – Variegated, leaves edged with cream and red fruit.

f. xanthocarpa – naturally-occuring variant includes all yellow-fruited forms.

Resources

Native Plants for Wildlife Habitat and Conservation Landscaping: Chesapeake Bay Watershed

American Holly – USDA Fact Sheet

American Holly – Missouri Botanical Garden

American Holly – UCONN Plant database

Additional information

Zones

Zone 6, Zone 7, Zone 8

Light

Part Sun, Shade, Sun

Soil

Clay, Loam, Moist

Flower Color

White

Flower Season

Spring, Summer

Fruit Season

Fall, Winter

Native

Carroll, Coast, Mountain, Piedmont

Wildlife Value

Butterfly Host, Deer Resistant, Food for Birds, Nest Sites, Summer Cover, Winter Cover

Notable Features

Evergreen, Winter Interest

Local Availability

Widely Available

Reviews

There are no reviews yet.

Be the first to review “American Holly”

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.