Cactus and many agaves evolved adaptation to extreme heat and drought by keeping their stomates closed during the day so there is no moisture loss. The CAM metabolism allows the cactus to open stomata at night to take in carbon dioxide so all gas exchange is completed before when the sun rises.
Also know, how do succulents prevent water loss?
So, when they sun’s not shining, stomata close to conserve water. Many succulents protect themselves further from water loss by working in the relative coolness of night; stomata open at night to take in CO2, and close during the hot, dry daytime, to conserve water loss.
Correspondingly, how long can a succulent go without watering?
They can go up to 1-3 months of no watering. Indoor succulents will have less exposure to the elements outdoors – wind and sunlight outdoors tend to dry out the soil faster than it does indoors. In cooler climates, generally fall and winter, the soil stays moist for longer periods of time.
What time of day should I water my succulents?
You should water in the evening because succulents use a form of photosynthesis call CAM (Crassulacean Acid Metabolism) and halt their uptake of water during periods of intense sunlight and heat.
K+ uptake is mainly responsible for the rapid increase of the turgor and the opening of stomata during the dawn (Humble and Raschke, 1971; Talbott and Zeiger, 1996). The accumulation of sugars such as glucose, fructose and sucrose has been reported during the light phase of the day (Talbott and Zeiger, 1998).