The correct way to water a cactus and the points to keep in mind

The cactus (ball cactus) is a classic drought-tolerant plant, native to regions with little rain, and its thick, fleshy body can store water, so it does not need frequent watering. The core principle of care is to err on the dry side rather than the wet side: water only after the potting soil has dried out completely, and then water thoroughly in one go. Frequent light watering instead tends to keep the roots constantly damp, raising the risk of root rot.

Watering frequency varies greatly from season to season. Spring and autumn are the peak growing seasons for ball cacti, so simply replenish water once the potting soil has dried out; in the high heat of summer, some varieties enter dormancy or semi-dormancy, so watering should be reduced and the surroundings kept well ventilated; in winter, when temperatures are low and the plant grows slowly, moisture must be strictly controlled, and keeping the potting soil on the dry side helps it overwinter safely.

When watering, it is best to pour slowly around the edge of the pot, avoiding the top of the body, especially for varieties with fuzzy hairs, since water pooling on the surface can easily cause rot. Tap water can be left to stand for a day or two before use, and the water temperature should be as close to room temperature as possible to avoid shocking the roots. As for timing, it is best to water on a sunny morning so that excess water has a chance to evaporate.

To judge whether it is time to water, you can poke a finger two or three centimeters into the potting soil and water once it feels dry, or you can observe the state of the body: slight softening and a duller color are often signs of water shortage. If the body becomes soft and yellow due to overwatering, stop watering immediately, take the plant out of the pot to check the roots, cut off the rotted parts, let them dry, and then replant. Once you get the watering rhythm right, the ball cactus will have strong roots, grow round and plump, and be more likely to bloom successfully.