Answer:
Keep the root ball moist, but not soaked. Too much water is just as bad as not enough water.
Apply the water over the root ball and the planting area, not on the trunk. Do not allow a sprinkler system to splash water on the trunk or leaves.
Use an open-ended garden hose or tree watering bag (such as Treegator).
Water every 2-3 days and give each plant at least 10-15 gallons of water per week. Larger trees (over 2 inch trunk diameter at chest height) will need around 8-10 gallons of water per inch of trunk diameter per week.
Water more during hot months and less during cold months.
Feel the soil: it’s the best way to check whether the plant needs water. Dig out a bit of dirt (not mulch) from the ground under the canopy. Roll it around in your fingers. If the soil is moist, no water is needed. If it is dry, time to water.
Simply look at the leaves. If they appear dry you may need to water.
