Ilex crenata – Ilex crenata

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Aquifoliaceae

Ilex crenata – Ilex crenata

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Japanese holly is a highly variable species that usually remains a shrub form, but can grow into a small tree after many years. The crown is oval to round, sometimes somewhat irregularly shaped. The leaves are also highly variable in shape and size. From ovoid leaves up to 3 cm long to inverted ovoid, often spherical leaves only 1 cm long. The leaves are matt to glossy mid-green to dark green. Like all Ilex, I. crenata is dioecious. Male and female flowers are therefore on different plants. The flowers are small and inconspicuous. The female flowers, after pollination, are followed by small, shiny black berries.
Ilex crenata is a particularly versatile shrub. Suitable for planting both solitary and in groups, but also suitable for making low to medium hedges. The plant is sometimes used as a Buxus substitute. On heavy and insufficiently permeable soil, growth may stagnate, making the plant sticky.
There are dozens of cultivars of I. crenata on the market. Some differ by having a compact or low growth habit. Other cultivars have yellow, yellow-spotted or white-spotted leaves. Very well known are the cultivar with convex leaves: 'Convexa' and the yellow-leaved 'Golden Gem'.

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Specifications
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Height
2-3 (5) m
Width
1-2m
Crown
dark, dense crown
Bark and branches
brown
Leaf
green, evergreen
Flowers
white, flowers in May, June
Fruits
black
Spines/thorns
None
Toxicity
has toxic components
Soil type
loamy soil, sandy soil, peaty soil, calcareous soil
Soil moisture
suitable for dry soil
Paving
tolerates no paving
Winter hardiness zone
6 (-23,3 to -17,8 °C)
Wind resistance
very good
Other resistances
resistant to frost (WH 1 - 6), can withstand wind
Application
tree containers, roof gardens, coastal areas, small gardens, patio gardens
Shape
multi-stem treem
Multi-stem tree calcareous soil loamy soil peaty soil sandy soil tolerates no paving resistant to frost (WH 1 - 6) suitable for shadow suitable for dry soil can withstand wind ovoid/egg-shaped 3rd size, smaller than 6 metres dense crown green white average growing toxic components
Frequently asked questions
Ilex crenata

Ilex crenata can eventually reach a height of 2-3 (5) m, depending on the site and climate conditions.

Ilex crenata is average growing and can eventually reach a height of 2-3 (5) m, depending on the site and climate conditions.

The right time to plant Ilex crenata is during the dormancy period. In Western Europe, Ilex crenata with root balls can generally be planted from mid-November to late April, although this depends strongly on the climatic conditions and the species of tree.

Ilex crenata blooms in may, june.
General