Very popular, widely used and time tested, this is a standard for comparison for white flowered crabs. Don’t confuse M. zumi ‘Calocarpa’ with straight M. zumi.
Malus x zumi 'Calocarpa'
Zumi Calocarpa Crabapple
USDA Zone: 5
Height: 20′
Spread: 24′
Description:
Shape
Rounded, gracefully spreading
Foliage
Green
Flower
Red buds, white flowers
Fruit
Red, 3/8", persistent
Disease Resistance
Scab: Excellent
Fireblight: Excellent
Cedar-Apple Rust: Excellent
Mildew: Good