(Prunus serrulata) Japanese cherry

Prunus serrulata or Japanese cherry, also called hill cherry, oriental cherry or East Asian cherry, is a species of cherry native to China, Japan, Korea and India,and is used for its spring cherry blossom displays and festivals. Current sources consider it to be part of a species complex with P. jamasakura and P. leveilleana, which have been reduced to synonyms.

Description
Prunus serrulata is a small deciduous tree with a short single trunk, with a dense crown reaching a height of 26–39 feet (7.9–11.9 m). The smooth bark is chestnut-brown, with prominent horizontal lenticels. The leaves are arranged alternately, simple, ovate-lanceolate, 5–13 cm long and 2.5–6.5 cm broad, with a short petiole and a serrate or doubly serrate margin. At the end of autumn, the green leaves turn yellow, red or crimson.

Flowers
The flowers are produced in racemose clusters of two to five together at nodes on short spurs in spring at the same time as the new leaves appear; they are white to pink, with five petals in the wild type tree. The fruit is a globose black drupe 8–10 mm diameter.

Cultivation
Prunus serrulata is widely grown as a flowering ornamental tree, both in its native countries and throughout the temperate regions of the world. Numerous cultivars have been selected, many of them with double flowers with the stamens replaced by additional petals.

In cultivation in Europe and North America, it is usually grafted on to Prunus avium roots; the cultivated forms rarely bear fruit. It is viewed as part of the Japanese custom of Hanami.

Varieties and cultivars
There are several varieties:

• Prunus serrulata var. hupehensis (Ingram) Ingram. Central China. Not accepted as distinct by the Flora of China.
• Prunus serrulata var. lannesiana (Carrière) Makino (syn. Cerasus lannesiana Carrière; Prunus lannesiana (Carrière) E. H. Wilson). Japan.
• Prunus serrulata var. pubescens (Makino) Nakai. Korea, northeastern China.
• Prunus serrulata var. serrulata (syn. var. spontanea). Japan, Korea, China.
• Prunus serrulata var. spontanea (Maxim.) E. H. Wilson (syn. Prunus jamasakura Siebold ex Koidz.)

Some important cultivars include:

• 'Amanogawa'. Fastigiate cherry, with columnar habit; flowers semi-double, pale pink.
• 'Kanzan'. = 'Sekiyama', 'Kwanzan', or 'Kansan'. Kanzan Cherry. Flowers pink, double; young leaves bronze-coloured at first, becoming green.
• 'Kiku-shidare'. Cheal's Weeping Cherry. Stems weeping; flowers double, pink. Tends to be short-lived.
• 'Shirofugen'. = 'Shiro-fugen'. Flowers double, deep pink at first, fading to pale pink.
• 'Shirotae'. Mt. Fuji Cherry. Very low, broad crown with nearly horizontal branching; flowers pure white, semi-double.
• 'Tai Haku'. Great White Cherry. Flowers single, white, very large (up to 8 cm diameter); young leaves bronze-coloured at first, becoming green.
• 'Ukon'. = 'Grandiflora', P. serrulata f. grandiflora Wagner. Green Cherry. Flowers semi-double, cream-white or pale yellow. Young leaves light bronzy-green. Fall leaf color can be purple or rusty-red.

en.wikipedia.org

https://en.wikipedia.org/wiki/Prunus_serrulata