Despite their towering stature and sturdy appearance, trees are plants, and like all plants, they need water to thrive. Often overlooked in landscaping care, trees require consistent watering, especially during prolonged dry spells. If you haven't watered your trees in the past few years, now is the time to give them the attention they deserve.
When trees don't get enough water, they become drought-stressed, which can lead to reduced growth, leaf damage, branch dieback, internal cracking, and even the loss of larger limbs. Over time, repeated exposure to drought weakens trees, leaving them more susceptible to pests and diseases. While the severity of damage may vary depending on the length and intensity of the drought, the long-term effects can significantly impact a tree's health and lifespan.
To determine if your trees need water, conduct a simple soil test. Push a long screwdriver or knife into the ground; if it doesn't easily penetrate, the soil is too dry. You can also look for signs in your landscape. For instance, mature evergreen azaleas are resilient plants, but when they wilt during dry conditions, it's a good indicator that your entire landscape, including trees, is thirsty. Don't forget about other foundational shrubs like camellias and hollies; they need hydration too.
Watering trees effectively requires a slow and deep approach. Using a soaker hose or a garden hose set to a slow trickle works best. A soaker hose releases water along its length and can be placed under the tree canopy, running for 24 to 72 hours, depending on drought conditions. With a regular garden hose, set the water to a steady trickle, place it halfway between the tree trunk and the dripline, and let it run for six to ten hours. Move the hose to different spots around the tree, repeating this process three to four times to cover the root zone. Be careful to avoid watering directly at the trunk, as this does not reach the absorbing roots.
If you notice water running off rather than soaking into the ground, reduce the flow to allow better absorption. Adding mulch around your trees can also help retain moisture, regulate soil temperatures, and provide additional protection against drought stress. Place mulch around the base of your trees, being careful to leave space around the trunk to prevent rot.
Mature trees typically require about one inch of water per week, whether from rainfall or irrigation. Experts recommend watering trees four to six times per year during periods of low rainfall. At the very least, ensure trees are watered during dry spells to maintain their health and vigor.
Caring for your trees with proper watering techniques not only helps them survive during drought but also strengthens them against future challenges. By giving your trees the hydration they need, you'll support their growth, enhance their beauty, and protect the value they add to your landscape.
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