Walnut trees can poison the soil around them, and this is actually a real phenomenon with a scientific name: juglone toxicity. So if you’ve been wondering, “do walnut trees poison the soil?” the answer is yes, they can. Black walnut trees in particular release a chemical called juglone that can be toxic to … Read more
Walnut trees do need a pollinator, but the situation is a bit more interesting than it sounds. You see, walnut trees are not self-pollinating in the way some fruit trees are, so they rely on another walnut tree nearby to produce a good crop of nuts. That said, the pollination story for walnut … Read more
Walnut trees do lose their leaves in the winter, and this is a completely normal part of their yearly cycle. If you’ve ever stood in your yard in December, staring at a bare walnut tree and wondering if something’s wrong, don’t worry, because walnut trees losing their leaves in winter is exactly what they’re … Read more
Walnut trees do need a lot of water, especially when they’re young, actively growing, or producing nuts. But how much water a walnut tree needs depends on its age, the soil it’s planted in, and the climate where it grows. If you’ve been wondering whether walnut trees need a lot of water, the … Read more
Yes, walnut trees have sap, and it plays a vital role in how the tree grows, heals, and survives. If you’ve ever wondered do walnut trees have sap, the answer is a clear yes. Like most trees, walnut trees produce sap to move water and nutrients throughout their system. But walnut sap … Read more
Walnut trees can kill other trees, and it’s not a myth. They release a chemical called juglone that is toxic to many plants, shrubs, and other trees. This natural herbicide gives walnut trees an unfair advantage, allowing them to eliminate competition for water, sunlight, and nutrients. So yes, walnut trees do kill … Read more