07/01/2026
Heat wave plant care tip: don’t water by the calendar — check the soil.
During stretches of extreme heat, there is no perfect rule for how much or how often to water. It depends on your soil, how much rain you’ve had, the type of plants you have, how established they are, and how much sun that area gets.
A few things to keep in mind:
• Check the soil a few inches down before watering. The surface can look dry even when there is still moisture below.
• Water deeply and slowly. A quick splash on top usually does not reach the root zone.
• Early morning is best when possible, so plants have moisture available before the hottest part of the day.
• If you need to water at night, water at the base of the plant and try to keep the leaves dry. Drip irrigation, soaker hoses, or a watering wand aimed at the soil are better than spraying over the top.
• Avoid pushing stressed plants with heavy fertilizer during extreme heat. Wait until the weather settles unless there is a specific issue you’re correcting.
• Mulch helps protect the roots, hold moisture, and regulate soil temperature. Just avoid piling mulch against stems or trunks.
New plantings, containers, hydrangeas, and full-sun areas usually need the most attention during a heat wave. The best thing you can do is inspect the soil, watch the plant, and adjust as needed.
Brennan’s Landscaping
Landscape Design • Installation • Maintenance
Northern Virginia