Cacti like as much bright indirect light as you can provide. Introduce a cactus plant to direct sunlight gradually to prevent sunburn. The ideal location for a small cactus pot is on the windowsill of a south-facing window.
Allow the soil of a cactus to almost totally dry out before watering, then water deeply and thoroughly. Never allow a Cactus to sit in water. A cactus requires more water in the spring, summer, and early fall when it is growing than in the winter. Over-watering is the main reason cactus plants die.
Use a fertilizer low in nitrogen and high in potassium at 1/4 the recommended strength. The type of fertilizer used for tomatoes works well. Fertilize monthly in the late spring and summer when a cactus is actively growing. Do not fertilize the rest of the year.
An indoor cactus plant likes temperatures between 15.6°-26.7°C
This plant comes from the desert and does well in very low humidity.
After a 3 month resting period and under proper conditions, a cactus plant may bloom during the late fall and winter.
Over-watering leads to crown, stem, and root rot.
Use a fast-draining, porous, sandy soil to prevent over-watering and root-rot. You can purchase special cactus/ succulent soil at a nursery or make your own.
Vertical cactus plants need pots that have a diameter 1/2 the height of the plant. Horizontal cactus plants need pots that have a diameter 5cm larger than width of the plant. If a cactus plant starts to topple, place it in a deeper pot.
A cactus plant is propagated by seeds, plant division, and plant cuttings. plant cuttings are definitely the easiest method.
A cactus needs less water and cooler temperatures in the winter when it is resting.