Answer: There is some truth to what you've heard. If you water during the heat of the day, and if water droplets remain on the leaves for some time, they could magnify the sun's rays and cause a burn. There are two schools of thought on watering; some gardeners water in the early morning, to prepare their plants for the heat of the day; others water in the evening, to help rehydrate them after a long day in the sun. Either way will work, as long as you try to keep water off the foliage, especially in the evening. If water remains on the leaves at night it could make your plants susceptible to fungal diseases. As for fertilizers, Miracle Gro and Miracid are both acid based, which is good if your area has alkaline soil or if you're growing plants that appreciate acidified soil (azaleas, for instance). Hope this answers all your questions!
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