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Ilex_crenata - Thunb.

Common Name Japanese Holly, Box Leaved Holly
Family Aquifoliaceae
USDA hardiness 6-8
Known Hazards Although no specific reports of toxicity have been seen for this species, the fruits of at least some members of this genus contain saponins and are slightly toxic. They can cause vomiting, diarrhoea and stupor if eaten in quantity[274].
Habitats Thickets, woods and wet places in lowland and mountains all over Japan[58].
Range E. Asia - China, Japan, Korea.
Edibility Rating    (1 of 5)
Other Uses    (0 of 5)
Weed Potential No
Medicinal Rating    (0 of 5)
Care
Fully Hardy Moist Soil Semi-shade Full sun
Ilex_crenata Japanese Holly, Box Leaved Holly


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Ilex_crenata Japanese Holly, Box Leaved Holly
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Summary

Bloom Color: Green, White. Main Bloom Time: Early spring, Late spring, Mid spring. Form: Rounded.


Physical Characteristics

 icon of manicon of shrub
Ilex_crenata is an evergreen Shrub growing to 5 m (16ft) by 3 m (9ft) at a slow rate.
It is hardy to zone (UK) 6. It is in leaf all year, in flower from May to June, and the seeds ripen from September to October. The species is dioecious (individual flowers are either male or female, but only one sex is to be found on any one plant so both male and female plants must be grown if seed is required). and is pollinated by Bees. The plant is not self-fertile.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.

Synonyms

Habitats

Edible Uses

Fruit[105, 177]. No further details are given, but some caution is advised[K].The fruit is about 5mm in diameter[200].

Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.



None known

Other Uses

Very amenable to trimming, this species is often grown as a hedge in N. America and Japan. It can also be used in topiary[182].

Cultivation details

Landscape Uses:Border, Espalier, Foundation, Hedge, Massing, Seashore, Superior hedge. Succeeds in most soils so long as they are not water-logged[200]. Prefers a moist loamy soil[1]. Fairly slow growing. Plants are hardy to about -20°c[184]. A number of named varieties have been selected for their ornamental value[182]. Resents root disturbance, especially as the plants get older[11]. It is best to place the plants into their permanent positions as soon as possible, perhaps giving some winter protection for their first year or two[K]. Any transplanting is best done in May or, preferably, in September. Dioecious. Male and female plants must be grown if fruit and seed is required. Special Features:Not North American native, Inconspicuous flowers or blooms.

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Propagation

Seed - best sown as soon as it is ripe in the autumn in a cold frame. It can take 18 months to germinate. Stored seed generally requires two winters and a summer before it will germinate and should be sown as soon as possible in a cold frame. Scarification, followed by a warm stratification and then a cold stratification may speed up the germination time[78, 80]. The seedlings are rather slow-growing. Pot them up into individual pots when they are large enough to handle and grow them on in light shade in a cold frame for their first year. It is possible to plant them out into a nursery bed in late spring of the following year, but they should not be left here for more than two years since they do not like being transplanted. Alternatively, grow them on in their pots for a second season and then plant them out into their permanent positions in late spring or early summer. Give them a good mulch and some protection for their first winter outdoors. Cuttings of almost ripe wood with a heel, August in a shaded position in a cold frame. Leave for 12 months before potting up. Layering in October. Takes 2 years.

Other Names

If available other names are mentioned here

Found In

Countries where the plant has been found are listed here if the information is available

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status

IUCN Red List of Threatened Plants Status :

Related Plants
Latin NameCommon NameEdibility RatingMedicinal Rating
Ilex crenataJapanese Holly, Box Leaved Holly10

 

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Thunb.

Botanical References

1158200

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