Definition - What does Drought Tolerant mean?
A plant is said to be drought tolerant if it can adapt to very dry conditions for prolonged periods of time. Drought tolerant plants are not exclusively those native to dry or desert-like climates. Any plant that can adapt to and survive a period without precipitation or rainfall can be considered drought tolerant.
Drought tolerant plants are of great interest to those with outdoor gardens in areas experiencing prolonged droughts and/or water shortages, and to indoor and hydroponic gardeners.
MaximumYield explains Drought Tolerant
Drought tolerant plants can often look beautiful and thrive, even in low-humidity, low-moisture areas with little to no extra watering. For example, if you have a cactus garden, you will likely only need to water your plants once every few weeks or months. On the other hand, while English ivy can survive a drought, it will not be healthy and will not grow to its full potential without regular watering.
In addition to cacti and succulents, some common drought tolerant plants include foxglove, perennial salvia, flax, daylily, English ivy, myrtle, Russian sage, and others.
It’s important to note that a drought tolerant plant must become established before it can survive long periods without water. After it becomes strong and well established, it will likely survive without water for several weeks, months, or even an entire season.