See also: Walnuts

BLACK WALNUT

Black Walnut trees (Juglans nigra) are native to North America.  Their edible nuts have an extremely hard shell, so black walnuts are not as popular as the English walnut of commerce.

The trees may grow to 150 feet tall and live up to 250 years.  More typical is 75 to 100 feet in height and 150 years.  They are mainly valued for their fine grained wood especially in the furniture industry.

Black walnut trees secrete 'juglone', which kills many herbaceous plants around the root system of the tree. It's own natural weed killer!

Plants adversely affected by being grown near black walnut trees exhibit symptoms such as yellowing and wilting of foliage, and eventual death.

Juglone is a respiration inhibitor which deprives sensitive plants of needed energy for metabolic activity.  It is released by live roots and accumulates under the canopy of the tree from decaying leaves and nut hulls.  Because decaying roots still release juglone, toxicity can persist for a number of years after a tree is removed.

 


 

Also see: Food Articles and Cooking Tips

You are here > Home

Next

Please feel free to link to any pages of FoodReference.com from your website.
For permission to use any of this content please E-mail: [email protected]
All contents are copyright © 1990 - 2024 James T. Ehler and www.FoodReference.com unless otherwise noted.
All rights reserved.  You may copy and use portions of this website for non-commercial, personal use only.
Any other use of these materials without prior written authorization is not very nice and violates the copyright.
Please take the time to request permission.



 

FOOD TRIVIA and FOOD FACTS

FoodReference.com Logo

 

 

Popular Pages

Food History Articles
World Cuisine
Pleasures of the Table
Recipe Index

CULINARY SCHOOLS
& COOKING CLASSES

From Amateur & Basic Cooking Classes to Professional Chef Training & Degrees

 

 

Home   |   Articles   |   FOOD TRIVIA   |   Today in Food History   |   Food_Timeline   |   Recipes   |  Cooking_Tips   |   Food Videos   |   Food Quotes   |   Who’s Who   |   Culinary Schools and Tours   |  Food_Trivia_Quizzes   |   Food Poems   |   Free Magazines   |   Food Festivals & Events

FoodReference.com (since 1999)

FOOD TRIVIA and FOOD FACTS SECTION