When you plant trees with water crystals, you increase the soil's nutrient and water absorption and retention capacity at a crucial time in your tree's development. And trees planted with water crystals only require half of the amount of water of trees planted without them. So in addition to strengthening your new tree, you can also cut down on your water consumption.
Dig a hole that is twice as wide and twice as deep as your sapling's current container.
Mix half of the excavated soil with aged compost and dried water crystals. Read the package's instructions to determine the amount (most trees require 3 ounces).
Carefully remove the sapling from its container.
Plant the tree in the hole so that the top of its root ball is a few inches above the surrounding soil. You will have to fill the hole with some of your soil mixture in order to do this.
Fill the hole with the rest of the soil mixture, but do not pile the soil any higher than the soil line on the trunk of your tree.
Pat the soil down with your hands to remove any air pockets.
Water the soil heavily, so that it is wet below the root ball but not soaking. The best way to do this is to lay a slow-running hose at the base of the tree for a few hours.
The next morning, water the soil heavily again.
For at least 2 weeks, continue to water the soil so that it stays moist to a depth of 4 inches. It will take at least this long for the water crystals to become effective. After this period, only water your tree with half of the required amount.
After one year, resume watering with the required amount. By this time, your tree's roots will have outgrown the water crystals.