Brown and Yellowing Plants

Question

My husband installed misters around our house to both water and keep the house cooler. I shook ‘Expert’ slow-release 17-17-17 on my flower garden, both beside the house and in a small bed that the misters don’t reach. I watered the small bed with the hose and simply turned the misters for the other. The next day the tips of some of the plants beside the house started turning brown, so I watered once with the hose and continued daily with the mister in the afternoons (the small bed looks great as did the plants beside the house the day before). There is now a lot of yellowing, not only in the flower garden, but also on an unfertilized hanging tomato plant beside the house. Could we simply be overwatering? My husband thinks we may be burning the plants by watering in the heat, but it is only about 90 degrees here so far. What do you think?

Answer 1

The following articles should be of some help to you:
https://www.gardeningknowhow.com/houseplants/hpgen/signs-of-over-fertilization-in-houseplants.htm
https://www.gardeningknowhow.com/plant-problems/environmental/signs-of-plants-affected-by-too-much-water.htm
https://www.gardeningknowhow.com/houseplants/hpgen/how-to-water-a-plant.htm