10 Graines Poirier de Chine, Pyrus calleryana

Chinese pear tree, ornamental pear tree, Pyrus Calleryana |

The Poirier de China (Pyrus Calleryana) is a species of Plants Dicotyledons of the family of Rosaceae, originally from Korea and Japan. He owes his Latin and English name (Callery Pear) to a Missionary named French Joseph-Marie Callery which brought him back from China En 1858.

10 seeds - Cold stratification 3 months before sowing, ideal seed temperature 18/20 ° C

Photo: direct sowing, germination without stratification, in 10 days in a greenhouse at 25/30 ° C days

It is a deciduous tree with a naturally erected port which can measure 15 to 20 m high.

Its gray bark is rough and cracked.

The bright dark green leaves alternate 4 to 7 cm long, have a long Petiole and saw bright red in autumn.

White flowers 2 to 3 cm in diameter and 5 petals appear in early spring before the leaves. They are slightly smelly. Contains one or two small seeds. In China, it is to its small fruit that the tree owes its nickname " to bear .

Pyrus Calleryana is a tree Hermaphrodite rustic (up to -25 ° C, USDA zone 5), vigorous and little regarding the type of soil. Rapid growth, it can give its first fruits from its third year. In its natural state, P. Calleryana is a thorny branch tree but many Cultivars are inert.

It has a period of Dormance fairly short and retains its leaves long in autumn.

He tolerates the shadow but needs a sunny exposure to fruit well.

Some cultivars, such as " Bradford ", are resistant to bacterial fire, phytophthora, at Chancre du Collet and not very sensitive to DEPERIED OF THE POIRIER.

Pyrus Calleryana was initially introduced into North America in the context of a genetic crossroads in order to create domestic pear trees with the bacterial fire resistance of certain varieties of P. Calleryana. It was a failure, but because of its very beautiful spring flowering and its beautiful red foliage in autumn, the pear tree of China has been, since 1950, " Reconverted " in Tree Ornement mainly throughout North America, then in Europe. However, the species does not only have advantages. Due to the great dispersion of its seeds by birds and its great tolerance to all types of soil and climates, P. Calleryana has now spread so much in the United States that it is now considered to be an invasivespecies.

Contents subject to the CC-BY-SA 3.0 license. Source : Article Poirier de China by Wikipedia in French (Authors)