What is considered the best time of day to irrigate?

Irrigating in the early morning is widely regarded as the best time of day to water plants. At this hour, temperatures are generally cooler and there is often less wind, which minimizes evaporation. The moisture has time to soak into the soil before the heat of the day sets in, ensuring that plants can absorb the water most efficiently. Additionally, watering in the morning helps reduce the likelihood of fungal diseases, as foliage has a chance to dry out during the day rather than being wet overnight.

Other times, such as late afternoon or evening, can lead to water sitting on the leaves overnight, creating conditions favorable for disease. Noon is typically the warmest part of the day, leading to significant evaporation before the water can reach the roots, making this time less effective for irrigation. Therefore, early morning remains the most beneficial time for irrigation, promoting healthier plants and more efficient water use.