Keeping Your Garden Happy During Summer Heat
Summer is one of the most beautiful seasons in the garden—but it can also be one of the most challenging. Extended periods of high temperatures and little rainfall can put stress on even well-established landscapes. Fortunately, a few simple adjustments to your routine can help your plants stay healthy, vibrant, and resilient throughout the hottest weeks of the year.
Water Deeply, Not Frequently
When temperatures climb, it's tempting to give your plants a quick drink every day. However, shallow watering encourages roots to remain close to the surface, where the soil dries out the fastest.
Instead, water deeply and thoroughly, allowing moisture to soak several inches into the soil. Deep watering encourages roots to grow downward, creating stronger, more drought-tolerant plants. In most landscapes, watering deeply a few times a week is more beneficial than light daily watering, though newly planted trees, shrubs, and flowers may require more frequent attention while they become established.
Water Early in the Morning
The best time to water your landscape is in the early morning, ideally before 9:00 a.m.
Morning watering gives plants time to absorb moisture before the day's heat arrives while minimizing evaporation. It also allows foliage to dry throughout the day, reducing the risk of fungal diseases that can develop when leaves stay wet overnight.
Avoid watering during the hottest part of the afternoon whenever possible, as much of the water will evaporate before reaching your plants' roots.
Mulch Is Your Garden's Best Friend
A fresh layer of mulch does more than make your landscape look polished—it also acts as insulation for your soil.
Applying two to three inches of mulch around trees, shrubs, and perennial beds helps:
Retain valuable soil moisture
Keep root systems cooler during extreme heat
Reduce weed growth that competes for water
Improve soil health as organic mulch naturally breaks down
Be sure to keep mulch a few inches away from the base of trees and shrubs to promote healthy airflow and prevent excess moisture around the trunk.
Hold Off on Fertilizing During Extreme Heat
While fertilizer encourages new growth, summer heat isn't the ideal time for many plants to produce it.
During periods of excessive heat, plants naturally shift their energy toward survival rather than growth. Fertilizing at this time can create additional stress and increase the need for water.
If your landscape is experiencing prolonged high temperatures, wait until conditions moderate before applying fertilizer. Your plants will respond much better once they're no longer under heat stress.
Don't Forget About Containers
Container gardens and hanging baskets are often the first to show signs of heat stress.
Unlike plants growing in the ground, containers have a limited amount of soil, which means they dry out much more quickly. During particularly hot stretches, they may need watering once or even twice a day, depending on their size, location, and the plants they contain.
Check containers regularly by feeling the soil a few inches below the surface rather than relying solely on appearance.
A Healthy Summer Garden Starts with Smart Care
A thriving summer landscape isn't about working harder—it's about working smarter. Deep watering, proper mulching, thoughtful timing, and understanding your plants' needs can help your garden remain beautiful throughout the season.
If you're looking for heat-tolerant plants, fresh mulch, or expert advice for keeping your landscape at its best this summer, stop by Mayfield Gardens. Our team is always happy to help you find the right plants and solutions for your outdoor space.