Malus transitoria - (Batalin.)Schneid.

(Batalin.)Schneid.

Rosaceae Edible: Fruit Potential hazards — see below

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Description

Malus transitoria is a deciduous Tree growing to 8 m (26ft) by 10 m (32ft). See above for USDA hardiness. It is hardy to UK zone 5 and is not frost tender. It is in flower in May, and the seeds ripen in October. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. It is noted for attracting wildlife. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils, prefers well-drained soil and can grow in heavy clay soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.

Edible Uses

Fruit - raw or cooked. About 15mm in diameter. The fruits on our trees in Cornwall are a bit larger, up to 25mm in diameter[K[. The flavour is acid and astringent, but tolerable, in mid-October. It improves once the fruit has been frosted and so it is best to delay harvesting as long as possible.

Known Hazards

All members of this genus contain the toxin hydrogen cyanide in their seeds and possibly also in their leaves, but not in their fruits. Hydrogen cyanide is the substance that gives almonds their characteristic taste but it should only be consumed in very small quantities. Apple seeds do not normally contain very high quantities of hydrogen cyanide but, even so, should not be consumed in very large quantities. In small quantities, hydrogen cyanide has been shown to stimulate respiration and improve digestion, it is also claimed to be of benefit in the treatment of cancer. In excess, however, it can cause respiratory failure and even death.

Distribution

E. Asia - China.

Where It Grows

TEMPERATE ASIA: China (Gansu Sheng, Henan Sheng, Nei Mongol Zizhiqu, Ningxia Huizi Zizhiqu, Qinghai Sheng, Shaanxi Sheng, Sichuan Sheng, Xizang Zizhiqu (east))

Cultivation

An easily grown plant, it succeeds in most fertile soils, preferring a moisture retentive well-drained loamy soil. Grows well in heavy clay soils. Prefers a sunny position but succeeds in partial shade, though it fruits less well in such a situation. This species is resistant to drought and cold temperatures. This species is closely related to M. toringoides. It hybridizes freely with other members of the genus. The fruit is a good wildlife food source, especially for birds. Plants in this genus are notably susceptible to honey fungus.

Propagation

Seed - best sown as soon as it is ripe in the autumn in a cold frame. It usually germinates in late winter. Stored seed requires stratification for 3 months at 1°c and should be sown in a cold frame as soon as it is received. It might not germinate for 12 months or more. Prick out the seedlings into individual pots as soon as they are large enough to handle. If given a rich compost they usually grow away quickly and can be large enough to plant out in late summer, though consider giving them some protection from the cold in their first winter. Otherwise, keep them in pots in a cold frame and plant them out in late spring of the following year. Cuttings of mature wood, November in a frame.