Size: Grows to about 8 to 15 feet tall and 10 to 15 feet wide over time (some mature specimens can reach up to 20 feet).
Form: Sold as a multi-stemmed shrub, a single-trunk tree, or a top-grafted standard (often on a 6-foot trunk).
Foliage & Branches: Features distinct, zig-zag or contorted twisted branches that provide great winter architectural interest. Dark bluish-green leaves curl slightly and turn a muted yellow in the fall.
Flowers: Rarely produces flowers compared to the native black locust species, though it may occasionally bear sparse, fragrant white pea-like clusters in late spring.
Hardiness Zones: USDA Hardiness Zones 3 through 8.
Growing Conditions & Care
Sunlight: Full sun (at least 6 to 8 hours of direct sunlight daily).
Soil: Adaptable to average, dry, or rocky well-drained soils; quite drought-tolerant once established.
Maintenance: Moderate. Prune out dead wood or fast-growing straight rootstock suckers that revert to the standard wild black locust form.
Toxicity: Note that parts of the plant can be poisonous to pets.
*Stock image shown for reference. Actual tree appearance may vary.