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The jade plant (Crassula ovata) is a pleasant succulent often grown indoors as a houseplant. For the most part, jade plants are an easy-growing species. Give them a nice patch of sunlight and they'll grow happily with little attention from you. In fact, too much attention is bad for them. Over-watering can give your jade plant a bad case of root rot. This virulent plant disease eats away at jade plant roots quickly. By the time the leaves start to yellow and die, the damage is extensive. You must act quickly to save your plant.
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Grip your jade plant by its base to pull it out of its pot. If the jade plant is quite large, first place the pot on its side and pull the plant out sideways. Don't force the jade plant. If it won't come out easily, knock on the sides of the pot with the palm of your hand to loosen the soil.
Brush and knock the potting media away from the jade plant's roots. Work outside or over newspaper to contain the mess.
Examine the jade plant's roots. Prune any that are mushy, black and/or foul smelling. Wipe your pruning shears off with an alcohol-moistened rag before the first cut and after each subsequent cut. Make the pruning cut roughly 1/2 inch beyond the infected portion into healthy root tissue to be sure you remove it all.
Plant the succulent in a new pot, 1 to 2 inches larger in diameter than the first. The pot must have drainage holes in its bottom. Use fresh succulent potting medium. Make sure the plant sits at the same height in the soil as it did before.
Wait one month or until your jade plant's leaves start to shrivel before watering again.
Proper watering practice is the key to preventing root rot. As a general rule, your jade plant only needs water once monthly or whenever its leaves look and feel dry. When you do water, keep going until you see water dripping out of the drainage holes in the bottom of the pot.
Depending on the extent of the damage, your jade plant may not survive. After you re-pot, take a few leaves and plant them in small pots. They will eventually send down roots and grow new jade plants identical to the first.
Most gardens sell succulent and/or cactus soil. These soils are ideal for jade plants. Regular potting or garden soil retains too much water to support succulent growth.