John M

Black walnuts do keep spiders away to some degree, thanks to a natural compound called juglone that acts as a mild repellent.   If you’ve been wondering whether black walnuts keep spiders away, the short answer is yes, they can help.   The strong scent and chemical makeup of black walnuts make them unpleasant for … Read more

Black walnut trees do have deep roots, and those roots are one of the most fascinating things about growing them.   They don’t just go a few feet down, either.   Black walnut trees have deep roots that can reach far into the soil, sometimes growing deeper than the tree is tall.   This is … Read more

Black walnuts can kill other trees, and this is not just an old gardening myth.   If you’ve ever wondered, “Do black walnuts kill other trees?”, the short answer is yes, they can harm or even kill certain trees and plants around them.   This happens because black walnut trees produce a chemical called juglone, … Read more

Black walnut trees do not produce walnuts every year.   Instead, they often alternate between heavy harvests and light ones, which is a pattern known as alternate bearing.   So if you’ve been asking, “do black walnut trees produce walnuts every year,” the short answer is no, and there are several natural reasons why.   … Read more

Black walnut trees do not produce nuts every year.   Instead, they often alternate between heavy nut crops and light ones, and this cycle can vary from tree to tree and region to region.   If you’ve been asking, “do black walnut trees produce nuts every year?”, the short answer is no, and there are … Read more

Black walnut trees can poison the ground around them.   Yes, black walnut trees poison the ground through a natural process called allelopathy, which is just a fancy way of saying they release chemicals that can harm or kill certain plants nearby.   If you’ve ever wondered whether black walnut trees poison the ground, the … Read more