Black Locust vs Neon Flash Spiraea - TreeTime.ca

Black Locust vs Neon Flash Spiraea

Robinia pseudoacacia

Spiraea japonica Neon Flash

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Black Locust
Neon Flash Spiraea

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.

Neon Flash Spiraea is a colorful, low maintenance, and multi-purpose shrub.

Late spring to fall you'll be drawn to its vibrant neon red blooms that rest on a neat mound of green foliage. If deer and rabbit are an issue on your property, consider planting Neon Flash Spiraea for its deer/rabbit resistance. Its tolerance of a variety of well-drained soils makes it an ideal foundation, landscaping, or border plant.

Black Locust Quick Facts

Neon Flash Spiraea Quick Facts

Zone: 3a
Zone: 3a
Height: 12 m (40 ft)
Height: 0.9 m (3 ft)
Spread: 8 m (25 ft)
Spread: 0.9 m (3 ft)
Light: full sun
Light: full sun
Moisture: dry, normal
Moisture: normal
Growth rate: fast
Growth rate: medium
Life span: long
Life span: short
Suckering: high
Suckering: low


Fall colour: burgundy bronze
Bark: dark reddish brown to balck with furrows
Flowers: Creamy white flowers in a pyramidal shape bloom in may-june
Flowers: pale to bright pink
Seeds: dark brown peapod-like pods
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Other Names: false acacia, yellow locust