There are hundreds of varieties of cactus, all of which are succulents.
LIGHT - Cactus requires at least two to three hours of full sun each day.
TEMPERATURE - Cactus will thrive in average room temperatures of 65-75 degrees (cooler in winter).
FERTILIZE - Use a Cactus fertilizer (2-7-7).
WATER - Water regularly spring through fall (less in winter) being careful not to drench soil.