Juglone, also called 5-hydroxy-1,4-naphthalenedione (IUPAC) is a phenolic organic compound with the molecular formula C 10 H 6 O 3. In the food industry, juglone is also known as C.I. Natural Brown 7 and C.I. 75500.

Jan 31, 2023 · The most common symptoms of juglone sensitivity in landscape and garden plants is the yellowing and wilting of leaves, especially during the hot dry periods during the growing …

Choosing plants that tolerate juglone well is a giant step toward improving the overall health of your garden. But sometimes you just really want to nurture a plant that’s sensitive to juglone, or you’ve been experiencing trouble growing plants even outside the black walnut tree’s dripline.

Black walnut trees produce a toxic substance (called juglone) that prevents many plants from growing under or near them. Learn more about this compound and how to work around it in this factsheet.

Feb 19, 2025 · There is no cure for juglone poisoning. The best thing you can do is avoid planting near black walnut trees! Not all plants are sensitive to the environment near the tree. But which ones are resistant? If you look at those that grow wild near volunteer juglone producers, you’ll have your answer!

Jan 10, 2025 · "Nothing grows under walnut trees" and "walnuts produce juglone" are both myths. Allelopathy is still not well understood. Learn the facts.

Jun 6, 2022 · Juglone (5-hydroxy-1,4-naphthalenedione) is a naturally occurring naphthoquinone derivative that has been known for more than a century. In 1905, French scientists M. Brissemoret and R. Combes reported that juglone exists in the green portions of …

The Black Walnut Tree secretes a chemical from it’s roots, fallen leaves, and husk of the black walnut known as Juglone. This chemical gives the Black Walnut Tree (Juglans nigra) an allelopathic effect [3], killing certain plants that are within it’s canopy [5].

Juglone is a hydroxy-1,4-naphthoquinone that is 1,4-naphthoquinone in which the hydrogen at position 5 has been replaced by a hydroxy group. A plant-derived 1,4-naphthoquinone with confirmed antibacterial and antitumor activities.

Jun 22, 2023 · Black walnut is a common woodland and landscape tree in the Midwest that produces an allelopathic compound called juglone which is presumed by some to cause an allelopathic response (inhibition of growth) in other plants.