Watering roses at the right time of day is crucial to prevent fungal diseases, according to the Royal Horticultural Society (RHS). The best time to water roses during summer is first thing in the morning, as this allows foliage to dry out during the day, reducing the risk of mildew and black spot. Morning watering also minimizes water evaporation due to cooler temperatures, ensuring more moisture reaches the roots.
Why Morning Watering Matters
Roses are deep-rooted plants that require generous watering during summer to thrive. The RHS advises directing water onto the soil around the base of the plant, avoiding foliage and flowers, to deter fungal diseases and prevent excess water use. Watering during the hottest part of the day can cause droplets on leaves to scorch, damaging the plant. If morning watering is not possible, it is better to wait until late evening after sunset, though this may attract slugs that could feast on other garden plants.
Signs of Underwatering
During hot weather, roses lose moisture rapidly, leading to wilting, dull foliage, and stunted growth. Container-grown roses lose moisture even faster. Gardeners noticing these signs should increase watering. Once established, roses should be watered once a week during dry periods, with a thorough soaking preferred over frequent light watering.
Additional Care Tips
Regular feeding throughout the growing season can extend the blooming period of roses. The RHS emphasizes consistent care to keep roses healthy and disease-free. By following these guidelines, gardeners can enjoy more stunning blooms while minimizing the risk of fungal infections.
