How To Care For Cactus. Otherwise select an area in the house thats bright warm and humid. For indoor cacti youll need to maintain a comfortable temperature water about once a month and allow adequate sunlight.
Cacti grow best when they are allowed to fully dry out between waterings. How you care for a cactus in the winter varies depending on if theyre indoors or outdoors. Mini cactus plants can produce stunning colorful flowers when in bloom but need around 4 hours of sunlight a day.
Cacti thrive in bright sunlight up to 12 hours a day.
Water your forest cactus as a normal houseplant during the summer months and when the buds begin to show. The greenhouse gives you control with light temperature and humidity. A general rule of thumb is to water your cacti every 3-5 weeks depending on the time of year. In a greenhouse a cactus can get plenty of sunlight or near a window if your cactus is indoors.