Characteristics of Japanese charcoal
- Type: shrub
- Height: 1 to 2 m, 2 to 5 m
- Flower colors: green
- Fruit name: capsule
- Desired exposure: sunny, semi-shaded
- Type of soil: normal
- Foliage: persistent
- sanitizer: no
- variety: Euonymys americanus, Euonymys chinensis, Euonymys frigidus, Euonymys glaber, Euonymys sanguineus
Origins and peculiarities of Japanese charcoal
The Japanese charcoal (Euonymus japonicus) belongs to the celastraceae family. It's a hedge shrub pruned, remarkable for its persistent and shiny foliage, its decorative fall fruiting and its compact habit. The genus Euonymus, by its Greek roots, means "well-named" and the species is called japonicus, because the plant is native to Japan. The French name "fusain" comes from the Latin "fusus" meaning fuseau. The slow growth of Japanese charcoal gives it a bushy, usually bushy habit.
The Japanese charcoal leaves are persistent and leathery. The blade (leaf surface) is ovoid, shiny olive green on top and dull light green below. The edges are crenellated, the veins clearly visible and the petiole is short. The leaves are opposite, that is, they face each other on the green stems.
The Japanese charcoal flower appears at the end of spring on the twigs of the year. The flowers are grouped in cymes of greenish flowers, discreet but fragrant and nectariferous. The fruits (6 to 8 mm in diameter), visible in autumn, are small, very decorative, pinkish, spherical and dehiscent capsules, that is to say, cracking when ripe to let out orange fruits, which are eaten the birds.
Warning : you should know that all parts of the charcoal of Japan are toxic to humans!
Japanese charcoal plantation
TheJapanese charcoal shrubcan for example be used as bedding, or as a hedge in the garden if you want to plant it in the ground.
In terms of location, the Japanese charcoal likes sunny areas, but also partial shade. It is preferable to protect it from north winds, its limit of resistance to cold being -15 ° C.
Undemanding, it supports most soils, provided they are normally drained. The varieties with variegated foliage are numerous but must be planted in the sun to keep their original character. Most cultivars have green and cream or green and golden yellow leaves.
Japanese charcoal size
The size of the deciduous Japanese charcoal can occur in late winter, its height should not exceed 1.80 m for it to acquire good rigidity. Thanks to this size, the new shoots will have brighter colored leaves and the base will remain garnished.
In spring and fall, evergreen species will not sulk a cleaning pruning.
You can cut the Japanese charcoal by taking twigs of the year in September, and make simple or heel cuttings (part of adjacent branch creating an angle with the main branch).
Japanese charcoal enemies and diseases
Japanese charcoal is susceptible to powdery mildew, a fungus that forms a white powder on the leaves. It can be treated with milk (1 liter of milk for 9 liters of water) to spray on the foliage.
But its main enemy is undoubtedly the scale. This small sap-sucking insect forms white cocoons and makes the leaves sticky. To get rid of it, use the Cryptolaemus ladybug, its main predator.
Deciduous species can also be attacked by black aphids which will hide under the leaves.
A small white butterfly with black dots, called charcoal hyponomeute, also adores the plant. Its caterpillar will devour the leaves in spring and will rest in winter, the ideal period to eliminate it.