Cacti occur in a wide range of shapes and sizes. Almost all cacti are succulents, meaning they have thickened, fleshy parts adapted to store water. Unlike many other succulents, the stem is the only part of most cacti where this vital process takes place. Most species of cacti have lost true leaves, retaining only spines, which are highly modified leaves.
Water- Water well when soil is dry, once per month. Do not allow standing water.
Light- Bright artificial light indoors or near a window without direct sun. Does best in Southern exposure.
Temperature- These plants tolerate a wide range of temperatures from 60-90F. Keep away from conditioning or heating vents.
Fertilizer- Balanced house plant food once per month at ½ strength, once per month. IMPORTANT: be sure to water first since your plants will be dry.