While there is no clear definition of deep watering, it’s worth looking into. A lot of gardening experts will tell you that deep watering is good for your trees and you should definitely use it. But what is deep watering and what makes it so special in the first place?
Essentially, deep watering is exactly what it sounds like: a process by which you water a tree or a plant in such a way that the water will penetrate deeper into the ground. The general consensus on how deep this should be is set at around 8 inches, but it can definitely vary depending on who you’ll ask, of course a drought tolerant grass will not require much at all.
Deep watering can have a very positive effect on your trees during the winter. Aside from making sure that the deeper parts of the tree’s roots will get water – which is great, since that’s the part that will stay warmer even if you have subzero temperatures at the surface – deep watering will also provide your tree with a long term source of water. That’s because below 8 inches the water is not likely to evaporate or freeze as easily as it would at the surface.
To use deep watering, all you have to do is water for about 15 minutes and allow the water to soak into the soil. Then you can push a blade into the ground to check just how deep the water went and adjust the amount accordingly, if needed.