Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Walnut Tree and Tomatoes
Name: Charles M.
Status: other
Age: 60s
Location: N/A
Country: N/A
Date: 1999-2001 


Question:
Our neighbor has a black walnut tree. We have tried to plant tomatoes and cucumbers in our garden. They do okay for a period of time and then they eventually die. The neighbor is going to cut the walnut tree down. Will it be okay to plant tomatoes and cucumbers in our garden or is there poison from the walnut tree that will still effect the tomatoes and cucumbers? What effects the two vegetables, poison from the walnut leaves or poison from the roots of the walnut tree? Does there have to be a period (months or years before you can plant the two vegetables in the garden?) Would it be better if we moved the garden to another area of the yard?


Replies:
Once your neighbor removes the tree, it would presumably take some time for the "juglone" to be removed from the soil. You might try another area of your yard farther from the walnut tree roots. For more on black walnuts and juglone, try searching http://www.google.com

Anthony R. Brach



Click here to return to the Botany Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (help@newton.dep.anl.gov), or at Argonne's Educational Programs

NEWTON AND ASK A SCIENTIST
Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory