While everyone knows that you can tap maple trees for their syrup, birch and walnut trees can also be tapped.
You’ve probably seen it countless movies and TV shows. Some poor guy is stranded out in the desert, and is in desperate need of water. So he cuts into a cactus, and harvests an abundance of lifesaving H2O. In the real world however, most cacti don’t really provide much water. The fluid they do provide is far from potable. In all likelihood it will induce vomiting and delirium rather than quench your thirst.
But that doesn’t mean you can’t gather water from other plants. In fact, there are several tree species you can tap for fresh drinking water, in much the same way you would tap a cactus (if you had a death wish). While everyone knows that you can tap maple trees for their syrup, birch and walnut trees can also be tapped. They will produce a fluid that has a much lower sugar content than maple, though all three are good sources of hydration in case you’re ever stranded in the wilderness. Here’s how it’s done:
Or if you’d rather make a less intrusive mark in the tree, you can use this slightly different technique.
source : Joshua Krause