Japanese Holly, Boxleaf Holly, Box-leaved Holly
Ilex crenata 'Convexa'

Family: Aquifoliaceae (a-kwee-foh-lee-AY-see-ee) (Info)
Genus: Ilex (EYE-leks) (Info)
Species: crenata (kre-NAY-tuh) (Info)
Cultivar: Convexa

Category:

Shrubs

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us

Height:

4-6 ft. (1.2-1.8 m)

6-8 ft. (1.8-2.4 m)

Spacing:

36-48 in. (90-120 cm)

4-6 ft. (1.2-1.8 m)

Hardiness:

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

Sun Exposure:

Full Sun

Sun to Partial Shade

Danger:

Unknown - Tell us

Bloom Color:

Pale Green

White/Near White

Bloom Time:

Late Spring/Early Summer

Foliage:

Grown for foliage

Evergreen

Shiny/Glossy-Textured

Other details:

Unknown - Tell us

Soil pH requirements:

Unknown - Tell us

Patent Information:

Unknown - Tell us

Propagation Methods:

From softwood cuttings

Seed Collecting:

Unknown - Tell us

Regional

This plant has been said to grow in the following regions:

Apex, North Carolina

Clyde, North Carolina

Morrisville, Pennsylvania

Pottstown, Pennsylvania

Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Oct 25, 2006, claypa from West Pottsgrove, PA (Zone 6b) wrote:

A very dense, hardy shrub. Glossy green foliage, and a few, small, almost black berries about 1/4". The leaves are convex on top and concave underneath (cup-like), with a few tiny teeth towards the tip of the leaf. Commonly sheared, it will withstand major pruning. Once it's established it has a great deal of drought tolerance.

Reminiscent of boxwood, but faster growing. Individual branches can grow maybe eight inches in a year. It was over-planted by developers in some areas. Definitely attracts bees, and birds like the cover it provides. The dark evergreen foliage is nice for holiday decorating in winter. From Japan, this variety was introduced to America by the Arnold Arboretum in 1919.