It is no longer surprising to find cacti plants grown in teacups, terrariums, succulent birdbaths and all types of containers. You should remove dead leaves and stems as soon as you can from the succulents' container. They do so in their leaves, roots, or stems. Every plant needs light to create not just its food but also to strengthen its stems for support. Overwatering could cause the death of the cactus. Plants that are exposed to low light will be more vulnerable and sensitive. Overwatering is a common cause of root rot.