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.
A cactus should be watered at least once a week. It can be watered two times a week if the soil is very dry.
Moth Orchids should be watered every 4 to 7 days.
once a week
Cacti will die if watered to much, it is best to water them when the soil has dried out completely. It is better to water less often than more.
The adverb in the sentence "he watered them daily" is "daily". It describes the frequency or how often he watered them.
Just how often a pumpkin plant needs to be watered depends on the state of the soil. The owner of the plant should judge the soil before watering; if it seems already very moist, watering should be kept to a minimum. In general, however, pumpkin plants should be watered every two days. Watering every day can over-soak the soil, leading to disease.
For light, watering, and temperature on the Zygo Cactus:Please see related link below.
3 times a week
a tomatoe has 97% water in it.
Watch the national weather report. When it rains in Tuscon, Arizona, then water your cactus.
Not at all or about every 10 days is how often weeds need to be watered. Weeds require little care since they survive such environmental stresses as drought and tolerate low-moisture soils.
Not very often because cactuses are designed to live a long period without water. I would suggest once every week is fine.