There is no one right way for watering newly planted trees & plants. This is a guideline only.
Be aware that all plants need a balance of water and oxygen. The ideal soil conditions are 25% water, 25% oxygen, and 50% soil. Too much water will suffocate the tree, and not enough will cause the plant to wilt and die.
Identify what type of soil you have. This will determine watering habits and help you see if any soil amendments are required. The ideal soil is a combination of clay, organic matter, and sand.
Before watering, check soil moisture with moisture meters/probes for accurate results, or dig a shovel into the dirt near the base of the plant and check for puddling, moisture, or dryness. These results will affect what watering techniques to implement.
Rain and sprinklers do not count as watering newly planted trees/plants. A hard downpour of rain typically does not penetrate the soil enough to supply the plant with water. As well, sprinklers are designed to water grass roots, which are a few inches below the surface. The roots on a plant/tree are much deeper than those of your lawn, and therefore they will not survive if only given rain and/or water from a sprinkler. If in doubt, refer to rule #4 and test the soil moisture before watering.
Not all plants and their root systems are created equal. Grass needs to be watered differently than a freshly spaded mature spruce tree. Therefore, different plants require different watering techniques.
The best time to water plants is in the morning, just when they start performing photosynthesis. Watering plants at night encourages fungi and mold to grow, because the plant does not take in water when the sun has disappeared.
Water your newly transplanted tree/plant until it is considered mature and can survive without your assistance. Usually it is considered mature after two years. If a tree was planted in May, for example, water it according to the soil type, location, weather, and temperatures until frost arrives. In the following growing season, watch for signs of wilting, but it should be able to fend for itself. In the event of extreme hot spells or very windy hot days, we suggest watering the plant until normal weather arrives again.
For more detailed tips & tricks regarding watering, consult a knowledgeable employee at Oxford Insta-Shade!