Black Locust vs American Plum - TreeTime.ca

Black Locust vs American Plum

Robinia pseudoacacia

Prunus americana

NOT AVAILABLE THIS SEASON - MIGHT RETURN

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Black Locust
American Plum

Black Locust is an attractive tree. Its distinctive leaves are made of about a dozen bright green leaflets. It also notable for its fragrant white flowers, which smell of citrus.

Black Locust can grow in many situations, but prefers dry areas with lots of sun. It is robust and is an excellent choice for establishing shade in dry, open areas.

Important note: Much of the Black Locust is toxic to humans and livestock, including seeds, bark, and leaves.

American Plum is a cold-hardy wild plum native to North America that grows as a small tree or large multi-stemmed shrub. Small, firm, red plums ripen from mid to late summer; the skin is tough and tart, whereas the flesh is sweet and juicy. While some enjoy eating them fresh, they are more commonly used for baking and preserves. It is considered a universal pollinizer for other plum varieties and is often used for grafting or as a rootstock.

In spring, American Plum produces abundant white to pink flowers that attract a variety of pollinators, providing an important early-season source of nectar and pollen. It also serves as a host plant for numerous moth and butterfly species. In its native range, it is recognized as an important keystone plant, as it has a disproportionately large impact on local ecosystems.

American Plum tolerates a wide range of soil conditions, from acidic to alkaline, and heavy clay. It is well suited to a variety of projects, including fruit orchards for cross-pollination, as well as pollinator plantings, naturalization, and restoration projects.

Black Locust Quick Facts

American Plum Quick Facts

Zone: 3a
Zone: 3a
Height: 12 m (40 ft)
Height: 6 m (20 ft)
Spread: 8 m (25 ft)
Spread: 6 m (20 ft)
Light: full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: dry, normal
Growth rate: fast
Growth rate: fast
Life span: long
Life span: medium
Growth form: rounded to spreading, thicket forming
Spreading: suckering - high
Suckering: high
Maintenance: medium


Toxicity: leaves, stems, pits contain cyanide
Fall colour: gold to orange
Bark: dark reddish brown to balck with furrows
Flowers: Creamy white flowers in a pyramidal shape bloom in may-june
Flowers: fragrant, white
Bloom time: early to mid spring
Fruit: small, red plums
Fruit size: 2-3cm in diameter
Firmness: firm
Harvest: mid to late summer
Seeds: dark brown peapod-like pods
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: SK, MB, ON
Other Names: false acacia, yellow locust
Other Names: american wild plum, wild plum