This is a foolproof, inexpensive device available at most nurseries. For large container plants, a meter is almost essential. Back to top Signs of dehydration and overwatering Stem and leaf wilt signal dehydration, but you should avoid waiting for this sign. In addition, the soil mixture may pull away from the side of the pot. At this stage a plant is stressed, and repeated treatment of this sort is ill advised.
Leaves become translucent.
Leaves or flowers drop prematurely. Leaf edges become brown and dried. Lower leaves curl and yellow. Frequent watering with small amounts of water can lead to waterlogging. This forces air from the soil and provides ideal conditions for the growth of fungi and bacteria.