Species American holly

American holly

Ilex opaca 'Clarendon'

American Holly (Ilex opaca 'Clarendon') is a broad-leafed evergreen tree with bright green foliage and a rich red-brown bark. It has sharp, spiny leaves that remain throughout the winter and masses of white berries in the fall. The small, but long-lasting, white flowers are fragrant and attract pollinators in the spring. It is native to the Eastern United States and Canada, and is best grown in acidic, moist and well-drained soils. It is often used as a specimen tree in smaller landscapes and can tolerate challenging weather conditions. Pruning and shaping may be needed to maintain its shape over time. American Holly is an excellent choice for adding a touch of winter color to any garden.

Cycle:

Perennial

Watering:

Average

Propagation:

Layering Propagation,Cutting,Grafting Propagation,Air Layering Propagation,Division,Seed Propagation

Hardiness Zone:

5 - 9

Flowers:

Greenish-white Flowers In Spring

Sun:

Full sun,part shade

Fruits:

Fruits Ready In Fall

Edible:

Yes

Leaf:

Yes

Leaf Color:

green

Growth Rate:

Moderate

Maintenance:

Low

Drought Tolerant:

Yes

Salt Tolerant:

Yes

watering

American holly (Ilex opaca 'Clarendon') is an evergreen shrub or small tree with an upright, pyramidal form growing up to 20 feet tall. This plant prefers to be in full sun to part shade and needs moist, slightly acidic soil with a pH level of around 6.0-7.0. Water this plant regularly during its first 1 to 2 growing seasons until established. After that, water it during prolonged periods of dry weather to keep the soil moist but not saturated. Water the soil deeply, providing approximately 1-2 inches of irrigation per week or as needed.

sunlight

American holly (Ilex opaca 'Clarendon') prefers full sun to partial shade, so it needs at least 4 to 6 hours of direct sunlight each day. During the hottest parts of the day, some shade is beneficial. In very hot climates, the holly can take some full sun, but it is usually better to provide afternoon shade to protect the plant from sunburn. Since American holly will usually tolerate shade, avoid planting it in an area of full sun that will be fully exposed to the direct sun for the entire day.

pruning

Pruning American holly (Ilex opaca 'Clarendon') should be done during the late winter or early spring when the shrub is still in its dormant state. Pruning should be very minimal, only removing diseased, dead, or broken branches, to maintain the shrub's attractive shape and size. Yearly pruning should encourage new growth and help keep the holly from becoming too large. For a more drastic pruning, this should only be done in early spring every 3-4 years to reduce and reshape size, only removing up to 1-third of the shrub. After pruning, apply a balanced fertilizer to help encourage new growth.

Season

Fall
Winter
Spring
Summer
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Harvest Fruit

Harvesting of Ilex opaca 'Clarendon' fruits typically begins in October and continues through December.

Starts Flowering

American holly typically starts flowering in April.

Hardiness Map