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.
Fruit - raw or cooked
. The fruit is rather variable in size and is usually about 1 - 3cm in diameter
. A firm and juicy flesh with rather an acid flavour, we found it pleasant in small quantities when fully ripe[K].
Used as a vigorous winter-hardy rootstock for the cultivated apple, M. sylvestris domestica, it is somewhat resistant to fireblight but susceptible to crown rot
There are no material uses listed for Malus x robusta.
There are no medicinal uses listed for Malus x robusta.
Seed - this is a hybrid species and will not breed true. The seed is 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
Practical Plants is currently lacking information on propagation instructions of Malus x robusta. Help us fill in the blanks! Edit this page to add your knowledge.
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
The fruit is a good wildlife food source, especially for birds.
Hybridizes freely with other members of this genus.
There are some named varieties, selected for their ornamental value. 'Fairy' and 'Joan' both have larger fruits than the type, up to 4cm in diameter.
Plants in this genus are notably susceptible to honey fungus
Problems, pests & diseases
Associations & Interactions
There are no interactions listed for Malus x robusta. Do you know of an interaction that should be listed here? edit this page to add it.
Polycultures & Guilds
There are no polycultures listed which include Malus x robusta.
This table shows all the data stored for this plant.
Malus x robusta
Material uses & Functions
Native Climate Zones
Adapted Climate Zones
Native Geographical Range
Root Zone Tendancy
? 1.01.11.21.31.4 Facciola. S. Cornucopia - A Source Book of Edible Plants. Kampong Publications ISBN 0-9628087-0-9 (1990-00-00)
? 2.02.12.22.220.127.116.11.72.82.9 Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press ISBN 0-333-47494-5 (1992-00-00)
? Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray (1981-00-00)
? 4.04.1 F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press (1951-00-00)