When to Water
The very best time to water is early in the morning when it's cool, this will allow the water to run down into the soil and reach the roots of plants without excess water being lost to evaporation. Making water available early in the morning will ensure that plants have all the water they need to deal with the heat of the summer sun. The second best time to water is late afternoon into early evening, this will enable plants to dry before night time thus avoiding damp leaves which promote fungus and other problems, especially in vegetables. Watering at this time will also give them several hours to take up water without contending with the heat of the sun.