ESTABLISHED TREES AND SHRUBS Trees and shrubs that have been in the landscape for two or more years should be well established, and not require much supplemental watering, except during prolonged dry spells. A good rule of thumb for the average plant is approximately 1” of water per week during periods without rain. Encourage deep root growth and prevent root rot by providing this amount of water in one to two waterings. To measure the water output of your irrigation system, put a small container on the ground to catch the water.
NEWLY PLANTED TREES AND SHRUBS Because their rootballs are small, newly planted trees and shrubs require more attention than established ones. Planting in the fall will give the root system time to develop before the heat of summer, but supplemental watering will be required for up to two years. After, water the rootball thoroughly. Watering during the first month after planting is especially critical. After that, you should be able to decrease watering frequency. Every time you water, the goal is to soak the rootball (anywhere from one to five gallons per plant). Irrigation timers set for lawns are not suitable for trees and shrubs.
BY TINA MAST
During warm weather months with little rain, you may need to water every two to three days. Plants in one or three gallon pots often need water more frequently than those with larger rootballs. If unsure, check moisture by sticking your finger down into the rootball.
GARDEN WATERING IT'S A MATTER OF LIFE OR DEATH! Improper watering is the leading cause of plant death in the landscape. Prescribing when and how much to water is a challenge, since many variables must be considered, and each situation is different. Weather, sun exposure, soil type, mulch, whether or not the plant is actively growing, and the type of plant must all be factored in. To help plants thrive, it’s important to know the ideal conditions for each. While some are adapted to extreme conditions, most prefer moist, well-drained soil. One indicator is if a handful of soil sticks together, but falls apart easily, when squeezed. 66
CIRCA Magazine
| July • August • September 2022
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