Is a Black Locust Tree Invasive?

Beautiful blooms are beloved by pollinators, however this tree isn’t a sensible choice for each yard. Discover out if a black locust tree is invasive.

What You Must Know Earlier than Planting a Black Locust Tree

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Mountain bluebird 

A Purple Gown black locust tree (Robinia pseudoacacia) blooms for about 10 days in late spring. Extraordinarily aromatic, 8-inch, dense flower clusters entice swarms of bees. Locust timber are additionally a number plant for the silver-spotted skipper butterfly.

Nevertheless, though it’s native and enticing to pollinators, this Purple Gown black locust isn’t beneficial in some areas. Go to to see what’s proper to your specific location. Then learn under to seek out out what a backyard skilled says about rising a black locust tree.

Uncover 15 timber you need to by no means develop in your yard.

Ask the Specialists

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Courtesy Diane Robinson

“Our yard tree (above) is a complete thriller to us. The leaves come out first, then lovely pink blooms in April. Have you learnt what sort of tree that is?” asks Diane Robinson of Prescott Valley, Arizona.

Gardening skilled Melinda Myers: This pink flowering locust is both Purple Gown black locust (Robinia pseudoacacia) or Idaho locust, which flowers 14 days later. Purple Gown grows 30 to 40 ft tall and 20 to 30 ft large, whereas Idaho is a bit shorter at 15 to 30 ft. Each are hardy in Zones 4 to 9 and carry out finest in full solar. They tolerate a variety of soils and are drought-tolerant as soon as established. Take away suckers as they seem, to forestall this plant from taking up. Do your analysis earlier than planting one in every of these, as a result of they’re thought-about invasive in some areas.

Don’t develop an invasive Russian olive tree in your yard.

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Courtesy Lorna Shepherd

This lovely tree (above) blooms in early summer season in northern Ontario. Are you able to inform me what it’s? asks Lorna Shepherd of Echo Bay, Ontario.

Melinda Myers: Don’t let the fantastic thing about this tree idiot you. This can be a black locust tree (Robinia pseudoacacia). It’s native to the U.S., however it has escaped the panorama and is taken into account invasive or a noxious weed in a lot of the U.S. and Canada. The tree produces aromatic flowers which can be adopted by seed-filled pods, which assist it unfold so properly. Sadly, it varieties dense thickets in pure areas, crowding out different native vegetation. Due to this, I wouldn’t suggest encouraging it or planting it in different areas.

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Yard Tip

In the event you discover a thriller tree that you just wish to establish, be sure you take photos of the leaves, blooms and bark. It will assist an skilled determine it out.

Subsequent, discover our favourite native timber that entice birds.

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