Watering plants in the middle of the day can be ineffective, especially on hot, sunny days. In the afternoons, water evaporates from the soil surface quickly and may not ever reach the plants' roots.

Rock salt separates into sodium and chloride ions when dissolved in water. These ions can cause damage to the inner workings ...

An evergreen desert shrub common in the Middle East excretes salt crystals onto its leaves that may help the plant absorb moisture from the air. “Not only does the plant use some water, it can gain ...