Convex-Leaf Japanese Holly
Ilex crenata 'Convexa'
Convex-Leaf Japanese Holly
(Photo courtesy of NetPS Plant Finder)
Height: 5 feet
Spread: 5 feet
Hardiness Zone: 6b
Other Names: Boxleaf Holly
A high quality, multi-purpose evergreen shrub, particularly effective for massing, hedges and topiary, takes pruning very well, small highly glossy convex leaves add aesthetic value; best in evenly moist, acidic soils; great alternative to boxwood
Convex-Leaf Japanese Holly has attractive dark green foliage. The small recurved oval leaves are highly ornamental and remain dark green throughout the winter. It produces black berries from mid fall to late winter. The flowers are not ornamentally significant.
Convex-Leaf Japanese Holly is a dense multi-stemmed evergreen shrub with a more or less rounded form. Its relatively fine texture sets it apart from other landscape plants with less refined foliage.
This shrub will require occasional maintenance and upkeep, and is best pruned in late winter once the threat of extreme cold has passed. It is a good choice for attracting birds to your yard. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;
Convex-Leaf Japanese Holly is recommended for the following landscape applications;
Planting & Growing
Convex-Leaf Japanese Holly will grow to be about 5 feet tall at maturity, with a spread of 5 feet. It tends to fill out right to the ground and therefore doesn't necessarily require facer plants in front, and is suitable for planting under power lines. It grows at a medium rate, and under ideal conditions can be expected to live for 40 years or more. This is a female variety of the species which requires a male selection of the same species growing nearby in order to set fruit.
This shrub does best in full sun to partial shade. It prefers to grow in average to moist conditions, and shouldn't be allowed to dry out. It is very fussy about its soil conditions and must have rich, acidic soils to ensure success, and is subject to chlorosis (yellowing) of the leaves in alkaline soils. It is highly tolerant of urban pollution and will even thrive in inner city environments. Consider applying a thick mulch around the root zone in winter to protect it in exposed locations or colder microclimates. This is a selected variety of a species not originally from North America.
Disclaimer - This Plant Database is an online catalog representing many of the varieties that we carry over the course of the season, and is intended for informational purposes only. Inventory varies seasonally, so we cannot guarantee that every plant will be in stock at all times - please contact your favourite GardenWorks location directly for current availability. It does not include our entire inventory of plants, so be sure to visit GardenWorks to see varieties that may not be represented on this list.