Most cacti need at least four (4) hours of direct sunlight every day. Keeping your cactus in an east- or south-facing window is best, but west-facing works in a pinch. Large cacti will not survive in your home if they do not have consistent access to direct light.
Moreover, how often should I water a big cactus?
Generally, cactus plants will need watering every 7 to 10 days for optimal growth during spring, summer, and autumn months. Increase the interval between watering schedules during the plant’s rest or dormant period during winter (approximately every 4 to 6 weeks).
Subsequently, how much light do large cacti need?
Typically, most cacti species need at least four to six hours of sunlight to thrive. These plants love being in bright and sunny locations. Plants that don’t receive sufficient exposure to light may exhibit a wide range of signs.