Pilosocereus cacti should be watered every 2-4 weeks during the growing season (spring and summer), allowing the soil to dry out completely between waterings. In the fall and winter, reduce watering to once a month or even less, as the cactus enters dormancy. Always ensure the pot has good drainage to prevent root rot. Adjust the frequency based on environmental factors like humidity and temperature.
once a week
Watch the national weather report. When it rains in Tuscon, Arizona, then water your cactus.
For light, watering, and temperature on the Zygo Cactus:Please see related link below.
Not very often because cactuses are designed to live a long period without water. I would suggest once every week is fine.
A cactus should be watered at least once a week. It can be watered two times a week if the soil is very dry.
It's water from a cactus! The cactus has collected that water!x
The cactus will shiver when watered which is a response to absorb water. It should not be sprayed but instead water the soil only when it becomes dry.
cactus and cactus water
I water my Mammillaria cacti once the soil has dried out completely. This is recommended for all cacti, it is better to water them not as often rather than regularly because if you get root rot then your cacti will die.
Summer due to amount of water evaporated by the cactus.
Water is stored in tissue in the stem of the cactus.
A cactus stores water in its stem.