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Now available! 6" Black Locust for instant shade

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Tree of the Week - black locust 

Black Locust provides a filtered shade when young, and more dense when olderBlack Locust

Robinia pseudoacacia--Black Locust 

Hardiness Zones: 4 to 8 
Height: 40 ft
Spread: 25 ft
Form: oval 
Type: deciduous tree 
Annual Growth Rate: more than 18 inches 
Flowers: White 

Comments: Black Locust is hard wooded, grows best in a sunny location and tolerates any soil that isn't swampy. This hardy tree is a legume and has a suckering root system that forms thickets if not controlled. The fragrant, white flowers appear after the leaves and are borne in drooping clusters. The aroma can be sensed from quite a distance. The fruit is a brown pod and the bark is coarse and fissured. The medium-green, lacy leaves sometimes hide the spines, which are in pairs along the branches. The cultivars can be difficult to locate.

Lovely black locust flowers in mid to late springCultivars: 
'Aurea' - The new leaves are yellow but become increasingly green with age. 
'Bessoniana' - A thornless cultivar with a compact oval form that will be 30 feet tall and 20 feet wide. 
'Frisia' - The tree has bright yellow summer foliage color. 
'Inermis' - A rounded tree with thornless branches. 
'Lacy Lady' (Twisty Baby(R))(PAF) - This 8-foot tall plant has crooked stems and curled foliage. 
'Purple Robe' - The new growth is purplish and the flowers are dark purple. 
'Pyramidalis' - This cultivar is tall, narrow, and spineless. The plant will be 40 feet tall but only 15 feet wide. 
'Tortuosa' - The branches are twisted, usually grated on a standard. 
'Umbraculifera' (Globe Locust) - A dense, globe shaped head on a tree only 12 feet tall and wide, rarely flowers. 

 ground cover. 

Check out more trees from the Tree of the Week Archive.


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