grafted cactus

grafted cactus
(cactaceae family)   
plant category: perennial
lighting: high
watering: 1x per week
plant care:
all cacti thrive in bright light, sunshine. confirm that the soil is dry before watering and make sure to dampen the entire root ball thoroughly. most cacti use an incredible amount of water during spring and summer and hardly anything at all throughout months with less daylight and cooler nights. in some cases these plants can go an entire winter without using water. keep in mind that these plants will be potted in a sandy soil, unlike most of your other houseplants. sand is powdery when dry and holds together when moist.
fyi:
there are other methods to determine when to water besides sticking your finger in the soil, one is by squeezing the very top of the plant, if it is mushy and flexible then the plant has used its stored water and requires to be watered again. In the same way, this method can tell you when the cacti does not need water.