Question 1

True or false: Black walnut wood is highly prized for making fine furniture and gunstocks.

Accepted Answer

True. Its rich dark color, durability, and workability make it a top choice for high-end furniture, cabinetry, and firearm stocks.

Question 2

True or false: Black walnut trees produce a chemical that can kill other plants nearby.

Accepted Answer

True. They release juglone, a toxic compound that inhibits growth of many other plants, a process called allelopathy.

Question 3

True or false: The green husk of a black walnut is edible and tastes like a sweet apple.

Accepted Answer

False. The husk is bitter, astringent, and can stain skin; it's not eaten raw, though it's used in dyes and some liqueurs.

Question 4

True or false: Black walnut trees produce a chemical called juglone that can inhibit the growth of nearby plants.

Accepted Answer

True. Juglone is a natural toxin present in all parts of the black walnut tree, and it can suppress or kill susceptible plant species through allelopathy.

Question 5

True or false: Black walnuts are native only to Europe and were brought to America by colonists.

Accepted Answer

False. They are native to eastern North America; European colonists encountered them here, not the other way around.

Question 6

True or false: Black walnut leaves are toxic to horses if ingested in large quantities.

Accepted Answer

True. Black walnut contains juglone, toxic to horses and causing laminitis. All parts, including leaves, can be harmful if ingested in large quantities, though bedding is the more common exposure.

Question 7

True or false: The black walnut's shell is so hard it is used as an industrial abrasive.

Accepted Answer

True. Black walnut shells are extremely hard and are commonly used as abrasive material in sandblasting, polishing, and cleaning due to their durability.

Question 8

True or false: Eating black walnuts can cause a temporary blue discoloration of the tongue.

Accepted Answer

False. The nutmeat itself is rich and oily, but doesn't stain; only the green husk contains the dark staining juglone.

Black Walnut Trivia Questions