Leaves turn yellow or a lighter shade of green. Young shoots are wilted. Leaves are green yet brittle. Algae and mushrooms are growing. Soil is dry.
Older leaves turn yellow or bown and drop off.
Leaves are wilted. Dripping faucets and whistling or hissing toilets waste water, even when no one is using them. Put 12 drops of red food coloring into the tank. Wait 15 minutes. If any red dye appears in the toilet bowl, water is leaking from the tank and a repair is needed.