Walnut trees
Walnut trees
Asked on 15 Jun, 2008
Is it true that anything, especially tomates, runner beans and potatoes that are growing underneath a walnut tree can be poisoned by a substance that drips from the tree after it has rained? We have had problems with our vegetables since the tree's branches have grown longer and spread in the last couple of years from the garden next door.
Replies
16 Jun, 2008
Ditto everything that Spritz said. However, I would add that some trees (tho I can only think of examples in the Pine family) do exude a substance from their roots that prevent the germination and growth of any other trees under their canopy so that they don't get any competition from other trees growing up. I have no idea whether this applies to Walnuts, but I suppose it's possible...............????
16 Jun, 2008
Black walnut produces something called Juglone which is toxic to both plants and people if injested. It is the roots that produce it so as the tree grows the area affected will too. But there are many vegs that are tolerent. Google Juglone Tolerent Plants
Gardening Encyclopedia: Ideas Pictures Tips Plants Furniture Miscellany
Other: Gardens to visit Garden colour Buying guides
Garden Plants: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Contact us Link to us About us Terms of Use & Privacy Press Help Sitemap
©2007-2008 growsonyou.com
Joined 17 Jun, 2007
West Somerset
15 Jun, 2008
I've never heard of that before! Are you sure that the 'problems' are not because of the lack of light due to shading from the tree branches? Or possibly from aphids on the tree? Maybe someone else on the site has a walnut tree and will be more able to help.