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How do you identify black locust

Author

Michael King

Updated on May 02, 2026

One can also tell the two trees apart by just looking at the bark. The black locust’s bark is dark in colour with grooves that resemble an intertwining rope. The honey locust’s bark is brown or grey in colour and the tree has  bunches of thorns. Both the black and honey locust have smooth, thin, shiny seedpods.

How do you tell the difference between a honey locust and a black locust?

One can also tell the two trees apart by just looking at the bark. The black locust’s bark is dark in colour with grooves that resemble an intertwining rope. The honey locust’s bark is brown or grey in colour and the tree has  bunches of thorns. Both the black and honey locust have smooth, thin, shiny seedpods.

How poisonous is black locust?

The bark, seeds, leaves and twigs of the black locust tree are toxic to humans, cattle, poultry, sheep, and horses. … The flowers are creamy white and are not toxic. Other parts of the tree are highly poisonous; symptoms of locust tree poisoning can occur within one hour of consumption.

What does a black locust plant look like?

Black locust tree bark’s characteristic ridges. In its early stages, the bark of the black locust is smooth and green while mature trees have bark that is dark brown, deeply furrowed, and topped with ridges. … Pinnate venation of black locust leaves. Leaves of the black locust turn from white to yellow in the summer.

What locust tree does not have thorns?

The imperial honey locust tree is a thornless species of deciduous tree that grows up to 40 ft. (12 m). The fact that this locust tree has no thorns and a wide-spreading canopy means it is a great shade tree for your garden.

Should I plant black locust?

While some have named it an “invasive” tree given its rapid growth and willingness to spread by seed and root suckering, others see these characteristics as advantageous, if only populations are properly managed to harness these qualities. Make no mistake, locust is not a tree to plant and walk away from.

Can you burn black locust wood in a fireplace?

Black Locust has an incredible BTU rating of nearly 30. … Black Locust burns longer than other types of wood as well. It also makes the most excellent coals. Black Locust firewood is perfect for throwing into the fireplace for overnight burning.

Does a black locust tree flower?

The white flowers are very fragrant and 2 to 2.5 centimeters (0.75 to 1 inches) long. … Black locust flowers in late April to early June depending on location. The species needs open ground and much sunlight to become established. Trees found in forests established in openings, burned areas, or similar locations.

Are black locust trees valuable?

Black Locust wood contains natural organic compounds that resist rot for 100 years or more, which makes these trees an extremely valuable and environmentally friendly tree. It is the perfect wood for fence and deck posts.

Is black locust toxic to touch?

A black locust planted too close to a walkway or high-traffic area of your yard could easily scratch or poke at passersby. Although being scratched by the tree isn’t poisonous, because it’s only toxic if eaten, those sharp barbs can certainly hurt.

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Is black locust poisonous to humans?

The Black Locust inner bark, roots, and twigs are poisonous to livestock, especially horses, and can be fatal. The seed is poisonous to humans.

Is black locust wood Food Safe?

It is a “food safe” wood though. The choice for treatment is mineral oil.

Are black locust trees invasive?

Black locusts have invasive traits that enable them to spread aggressively. … Black locust produces hanging clusters of very fragrant white flowers in spring. This fast-growing native tree can form colonies and has brittle wood.

How long do black locust trees live?

Most live to be around 60 years old. However, some specimens can grow taller than 150 feet, have a diameter of more than 5 feet, and live to be 100 years old. The branches grow erratically and without any sense of order. When the limbs are very young, they are coated in a silvery-white down that quickly disappears.

Is black locust a hardwood?

Black Locust wood is a hardwood with a Janka hardness scale of 1,700 lbf (7,560 N).

What wood should you not burn?

Watch out for any wood covered with vines. Burning poison ivy, poison sumac, poison oak, or pretty much anything else with “poison” in the name releases the irritant oil urushiol into the smoke. Breathing it in can cause lung irritation and severe allergic respiratory problems, the Centers for Disease Control state.

Is black locust good for turning?

Color/Appearance: Color can range from a pale greenish-yellow to a darker brown. Black Locust also has a moderate blunting effect on cutting edges. … Responds very well to both lathe turning and steam bending; glues and finishes well.

Are black locust trees messy?

Are honey locust trees messy? While honey locust trees drop both small leaflets from their compound leaves and purple seed pods, these drop around the same time in fall. The resulting mess is rather easy to clean-up, though the small leaflets are a bit difficult to manually rake.

How much is black locust worth?

But it’s worth it: Beyond the sustainability benefits, black locust is also cost-effective. In bulk, it’s $5.44 per square foot, while ipe is more than $7 per square foot.

Is black locust native to us?

Black locust is native to the United States, though the extent of its original range is not accurately known. … Plants Database provides a map of black locust’s distribution in North America. Black locust also occurs in parts of South America, Europe, Asia, Africa, and Australia (review by [340]).

Are black locust trees good for fence posts?

Black locust makes great fence posts. I wouldn’t bother debarking, (but the bark will rot eventually) as the man rightly told you, just make sure your post is at least 5″ heartwood.

Why is it called black locust?

Fragrant, white, pea-like blossoms hang in pendulous clusters. Flowers appearing in April and May. Fruit a flat, straight to slightly curved pod up to 5 inches long. British colonists at Jamestown discovered this species in 1607 and named it for its resemblance to the Carob or Old World Locust (Ceratonia siliqua L.).

What are black locust trees good for?

1. Black locust wood is useful for lumber, paper pulp, posts, and fuel. This clone growing in Hungary is straighter than most trees in North America, where borer insects and heredity typically produce crooked trunks.

What does black locust smell like?

1) Black Locust (Robinia pseudoacacia) aka False Acacia – a native to the Eastern parts of the continent; and which smells like a sweet blend between heliotrope and orange blossom.

Is black locust good for cutting boards?

New User. Woods to stay away from: spalted anything, black locust (the bark will kill a mule), most cedars, pine, any wood the bugs won’t eat and a lot of the exotics.

Is black locust poisonous to dogs?

The entire black locust tree, especially the bark and shoots, is toxic to cats and dogs. If consumed, it can cause kidney failure, weakness, nausea, depression and death.

Are black locust pods poisonous to dogs?

Black locust is a tree type plant that is poisonous to your dog if he consumes any part of it. If you believe that your dog has chewed on or eaten any of this plant, you need to seek veterinary attention immediately.

Is black locust sawdust toxic?

I wear a respirator, but running a manual mill and having the dust thrown onto you, it only does so much. “Toxicity: Black locust is poisonous to all animals if ingested. Although fatal cases are rare, recovery may take several days or even weeks.

Is honey locust wood Food Safe?

Edible parts and other uses Only the fruits of honey locust are considered edible. The sweet and fleshy pulp of the bean pods can be eaten raw or extracted and used in a variety of ways. From smoothies, to beer.

How can I tell what kind of tree I have?

To identify what kind of tree you have, begin by grabbing a leaf. If you please, snap a picture of the tree’s bark, canopy and any identifying features, such as its fruit, blooms and size.

How do you identify a tree with a phone?

The free mobile application application is called Leafsnap, and it uses visual recognition software to identify tree species from photographs of leaves that users upload to their phones. Leafsnap was developed in 2011 by scientists from Columbia University, the University of Maryland and the Smithsonian Institution.