Watering your cactus too often can be a problem. If you keep the soil too wet you can see a yellow shade developing on your succulent. This is a sign of stress, and the plant can't live in such moist conditions. Your cactus should be watered only when the soil is fully dry.

How do I save my yellow cactus?

The plant can also turn yellow from lack of water and being too dry. Usually the plant will also appear shriveled or wrinkled. When this happens to your plant, give it a thorough watering and it should perk up within a day or so.

How often does a cactus need to be watered?

In the growing season, the plants should be watered at least once a week. When watering, the soil should be given a good soaking, allowing excess water to drain away. Allow the compost to dry out slightly between each watering.