Question 1: How do I know when to water my plants?
The best tool you have for gauging plants’ need for water is your own observations. Most plants will droop slightly when they are thirsty. A finger inserted an inch or so into the soil will also tell you whether a plant needs water. Ideally, you should give water at the very first indication that a plant needs it. Succulents will not droop, but the leaves may become less glossy, dull, or wrinkled, and worst they can turn yellow and begin to fall off. Any yellowing of leaves is an indication that there is a water problem: yellow leaf tips indicate overwatering, overall yellowing is often a sign of under-watering. Generally, before watering you should wait until soil has mostly dried out, but it should never be allowed to dry out completely. If you can, water using rainwater whenever possible, because it has the perfect PH for plants.