Judging when and how much to water plants during a heat wave can be difficult. When the temperatures spike for extended periods, we as gardeners need to take care of our plants and ensure they have enough moisture to cope.
One useful way of telling how much water you need to give plants is to determine how much moisture has been lost due to evaporation. This can be done simply by using one common household item. It is not a perfect solution, but it helps determine when and how much you need to water.
