Ilex x altaclerensis 'WILSONII'

Highclere holly is an evergreen hybrid between ilex aquifolium and ilex perado, probably from England. All varieties of this hybrid are quite unique and have almost spineless, large leaves and often vigorous growth.

Wilsonii is a rare variety of Highclere holly. It bears 5-7 cm long, oval to oblong, deep green and very glossy leaves. They are mildly spiny when young and lose spines as the plant grows taller than 1m, then new leaves become mostly entire with just one sharp tip. It is a female variety that bears profusion of large, vivid red berries if a male pollinator is nearby.

It grows medium fast, making strong, erect branches which form an upright, widely oval shrub. Under ideal conditions, e.g. in Benelux countries and England, it may grow quite tall and wide, whereas in our zone it makes a shrub that seldom exceeds 4m when 20-25 years old. It can be pruned and shaped to maintain smaller size. Do not cut into old wood. It takes a considerable amount of time to repair its shape. Pruning in April will encourage new growths, trimming by end July is ideal for shaping.

Grow hollies in moist but well-drained, light, acidic and fertile soil. They can take periods of drought once established but absolutely hate water-logging: their leaves fade to yellow and fall down leaving bare branches. Hollies do best in full sun but can also grow in part shade and shade where their shape may be distorted. If you live in a region with cold winters and long-lasting frost we recommend growing it in position sheltered from drying winds, and shaded from winter sun if possible. Hardy to USDA zone 6.

Last update 04-10-2010