July 11, 2024
Central Texas summers are tough on trees and shrubs. With scorching temperatures, drought conditions, and unique soil challenges, proper watering is essential for their survival and health. Whether you've just planted a new sapling or have mature trees gracing your landscape, understanding how to water effectively is key.
New Plant TLC: Watering for Establishment
Newly planted trees and shrubs require special attention as their root systems establish. Here at HCWG we know that these young plants need consistent watering, especially during their first two years.
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Moisture Meter: Tells you when to water until you get the hang of your plant's needs and soil properties.
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For the First Few Weeks: Water 2-3 times per week, then gradually reduce frequency to once a week as the roots establish.
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Weekly Watering: Aim to water new trees thoroughly once a week after the first week to two weeks of installation.
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Focus on the Root Zone: Concentrate watering efforts near the planting area and out to the dripline (the area beneath the outermost branches).
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Small Trees, Small Needs: Saplings and smaller trees require less water than larger ones.
Deep Watering for Established Trees
Even established trees need deep watering, particularly during dry spells and extended periods of heat.
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Frequency: In dry periods, water established trees at least every two weeks. During winter, once a month is usually sufficient if there's no significant rainfall.
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Quantity: The amount of water needed varies depending on the tree's size. A general guideline is 5-10 gallons of water per inch of trunk diameter. Stressed trees may need more water than healthy ones.
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Slow and Steady Wins the Race: Avoid watering too quickly, as this can lead to runoff. Use a soaker hose, drip irrigation, or a sprinkler to apply water slowly and deeply.
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Check Soil Moisture: Use a trowel or screwdriver to check the soil moisture a day after watering. It should be moist 4-5 inches deep.
Watering Wisely: Tips from the City of Austin
The City of Austin's Tree Care guide offers valuable advice for watering trees efficiently and effectively:
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Water Restrictions: Be sure to check Austin Water's website for any current watering restrictions to avoid fines.
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Mulch and Compost: Applying mulch and compost (or MicroLife Humates Plus) can help retain soil moisture, regulate temperature, and suppress weeds. The organic matter and humates
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Watering Tools: Consider using a soaker hose, drip irrigation system, or a sprinkler with a timer to ensure consistent and efficient watering.
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Watering Timing: Make sure to water early in the morning to keep evaporation and fungal issues down.
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Tree Placement: When planting new trees, choose the right tree for the right place. Consider factors like soil type, sun exposure, and mature size to ensure your tree thrives with minimal supplemental watering.
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Soil Type: Know your soil type as sand will need more frequent watering since they drain fast, while clay soils will take longer to soak but retains the water for longer.
Signs of Tree Stress
Keep an eye out for signs that your trees might be stressed due to lack of water:
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Scorched, wilting, or discolored leaves
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Premature leaf drop
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Dying twigs and branches
If you notice these signs, adjust your watering practices accordingly.
By following these guidelines and adapting them to your specific trees and soil conditions, you can help your trees thrive in the Central Texas climate. Remember, a well-watered tree is a healthy tree, and healthy trees contribute to a vibrant and sustainable urban forest.
Written by Calvin King HCWG Horticulturist and Co-Owner of Glass Root Garden
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