SelecTree: Tree Detail
REDBUD CRABAPPLE
Malus × zumi 'Calocarpa'
Photo Locations: Red Butte Garden - Salt Lake City, UT, The National Arboretum - Washington, DC and Finch Arboretum - Spokane, WA
General Notes
A hybrid between Malus baccata × Malus seiboldii.
Utility friendly tree.
Branches droop but resist breakage. Trainable as a Standard. Fruit can be used for making teas, jams and jellies. Moderately drought tolerant. Prized for its spring bloom of small, white flowers and its prolific bright reddish fruit.
Has fragrant Flower.
Family: Rosaceae
Additional Common Names
REDBUD CRABAPPLE, CALOCARPA ZUMI CRABAPPLE
Tree Characteristics
Rounded Shape.
Has Deciduous foliage.
Height: 20 - 25 feet.
Width: 15 - 30 feet.
Growth Rate: 12 to 36 Inches per Year.
Longevity 40 to 60 years.
Leaves Elliptic to Oval, Green, Gold, Deciduous.
Flowers Showy. Fragrant Pink or White. Flowers in Spring. Has perfect flowers (male and female parts in each flower).
Persistent, Red or Orange Pome, Very Small to Small (Under 0.25 - 0.50 inches), fruiting in Summer or Fall Wildlife use it.
Bark Grayish Brown, Scaly.
Shading Capacity Rated as Dense to Very Dense in Leaf.
Shading Capacity Rated as out of Leaf.
Tree Site Conditions & Constraints
Sunset Zones 1 - 11 and 14 - 21.
USDA Hardiness Zones 4 - 8a.
Exposure Full Sun.
Well Drained Soil.
Clay, Loam or Sand Texture.
Acidic Soil pH.
Salinity Tolerance is Moderate Inland.
Pests & Disease Information
Resistant to Scab, Fire Blight, Mildew and Cedar Apple Rust. Susceptible to Aphids, Armillaria.
Health, Safety & Environmental Concerns
Branch Strength Rated as Strong.
Root Damage Potential Rated as Low.
Attracts Birds.
Wildlife use Fruit.
Special Uses & Values
Container, Buffer Strip or Street Tree.
Espalier.
Cite this tree:
SelecTree. "Malus × zumi 'Calocarpa' Tree Record." 1995-2019. Mar 19, 2019.
< https://selectree.calpoly.edu/tree-detail/malus-×-zumi-calocarpa >
This tree is not part of the SelecTree Nursery Connection. If you would like to see this tree listed, or know of a nursery that sells it, please contact us at ufei@calpoly.edu.