Special Gift Offer
URL:
http://www.gardengatemagazine.com/newsletter/2008/10/14/juglone-toxicity/
Share:

Juglone toxicity

By: Garden Gate staff
You may have heard that you can’t grow anything under or around a walnut tree. Well, there’s some truth to that.

problem solver

Juglone and walnut toxicity

You may have heard that you can’t grow anything under or around a walnut tree. Well, there’s some truth to that. The roots, leaves and nuts of several different walnuts and some hickories produce a substance called juglone that inhibits growth of certain plants. Those plants that are susceptible include members of the tomato family, potatoes, blueberries and azaleas.

Luckily, there are many plants that don’t seem to be bothered. Some plants that resist walnut toxicity are European wild ginger, bee balm, spiderwort, Siberian iris and weeping forsythia. A more extensive list of plants can be found at the University of Wisconsin Urban Horticulture Web site:

http://wihort.uwex.edu/landscape/Juglone.htm

Published: Oct. 14, 2008
Share:
Tags:
  • None
GDT Notes Ad_Gift Guide 2020_zone5

Product Recommendations

Here are some supplies and tools we find essential in our everyday work in the garden. We may receive a commission from sales referred by our links; however, we have carefully selected these products for their usefulness and quality.

GDT Ad_GiftGuide2020_zone6

Garden Gate Fine Art Zone 10 2018-05-30
GDT Free Issues zone7and11 Mobile_Spring
Last Week’s Newsletter

October 7, 2008

Ficus leaf drop

If you’ve grown a ficus, you probably know that it can be a little finicky about where it calls home; the leaves will turn yellow and drop off for no apparent reason.

GDT_Printful Ad_zone15_fall