Travis Philp wrote:Hi Eric,
My understanding is that the juglone from a well established will remain present in the surrounding soil long after the tree has been cut, due to the roots and fallen leaves continuing to secrete it as it decays. I think it can take years if I'm not mistaken, though I'm not sure about younger trees, as you seem to be describing. You said the trees are 5 years old but only 6 inches...Did you mean feet?
If it were me I'd probably go with the flow and plant stuff that doesn't mind juglone around the walnut trees as a buffer, and then plant whatever else beyond that. There are many lists that can be found via search engines both on this site and elsewhere.
Two members of the black walnut grove live on the edge of a growing gully with a seasonal creek. I wonder if the gully is impairing the root system of the trees and therefore their production.
Greta Fields wrote:Eric, I am about to experiment by cutting the locust saplings near the walnuts, and planting things around the wonderful locust stumps. I have found that anything grows great around old locust stumps, which are LEGUMES, like giant BEANS!!! When I left my land for five years, walnut saplings took over. I was able to kill one by ringing the stump. The other that I cut sprout over and over. Indians used to make butternut clearings by ringing all trees and burning the stumps.
I made one butternut clearing with 12 butternuts.
After 5 years neglect, raspberries covered the ground under one giant walnut. I did not have the heart to cut it. I put manure on the raspberries and pruned them and mulched them last winter. I am presently eating large berries, all I can stand.
If your mulberries are red, they may be rare. One book about tree death says red ones are dying. Walnuts are supposed to be dying out too.
Wojciech Majda wrote:@Danielle Venegas
It depends... Make sure your garden is well irrigated and fertilized, then the distance will lower as teh walnut will not "send" roots far away.
Also think about the area between the black walnut as a place where you will plant different fruit trees (mulberry, seabery, gumi...). Maybe use this area to plant more nitrogen fixers, so you will not have to put as much nitrogen fixers in the area where you want fruit trees susceptible to juglone.