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MALUS x robusta
Hybrid Siberian Crabapple
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The vigorous, large-growing hybrid Siberian crabapple covers itself in mid-spring with pink-tinged white blossom that become cherry-like red or yellow fruits later. This deciduous tree has a tall spreading habit to almost pyramid-like, making it a nice blend of ornamental flowering fruit tree and attractive shade tree. It is a hybrid created with the cross of two east Asian crabapples, Malus baccata and Malus prunifolia.
The slender oval leaves are dark green with teeth on the edges and emerge just after flowering starts in mid- to late spring (depending on climate or elevation). The white flowers and tinged with pink and are fragrant, attract bees, and give way to small fruits that turn either red or yellow or a blend of both. Birds relish the early autumn ripening fruits, which persist for months and are produced annually, sometimes in heavier flushes in alternate years. In autumn, the leaves turn shades of yellow.
Grow hybrid Siberian crabapple in full sun in a fertile, well-drained, loamy soil with average moisture. This is an undemanding tree that tolerates a wide range of soils but is best in slightly acidic conditions. It needs a long period of cold in winter to flower fully in spring. It tolerates heat but grows best in cool to warm summers and in soil that never becomes overly dry. Use this impressive crabapple as an accent or shade tree in a spacious lawn. The small fruits are sweetly acidic and are great in preserves. This hybrid species' cold-hardy rootstock is often used in grafting on modern eating apple cultivars.
Two selections with slightly larger-sized, but still small fruits are 'Fairy' and 'Joan'. Having fully red fruit is 'Red Siberian' and heavily producing yellow fruits is 'Yellow Siberian'. These all have a susceptibility to crown rot disease.
8 - 1
3 - 8
A2, A3, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Full Sun, Partial Sun
35'-40' / 10.7m - 12.2m
26'-32' / 7.9m - 9.8m
Acidic, Neutral, Alkaline
Clay, Loam, Sand
Spring, Summer, Fall
Edible, Feature Plant, Fruit / Fruit Tree, Shade Trees, Street Trees
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