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How to Save a Succulent Whose Leaves are Turning Yellow

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Succulents grow either as houseplants or as outdoor plants in warmer climates. Generally, low-maintenance plants that store water in their leaves or stems, succulents grow indoors everywhere and, depending on the plant, can grow outdoors in USDA plant hardiness zones 8 through 12. Succulents generally require little special care, but they can develop yellow leaves when growing conditions do not meet the plant's needs.

Succulents store water in their thick leaves and stems. Most of these plants are naturally green, some with variegated leaves and occasionally other colors mixed with green. If you notice some leaves beginning to turn yellow, it is time to step in and quickly fix the problem to prevent extensive damage to the plant.

Checking the Soil

Overwatering is the most common cause of yellowing leaves on a succulent plant. Constantly wet soil can rot the plant's roots, interfering with its ability to take up water and nutrients from the soil. This interrupts photosynthesis, or energy production, in the plant's leaves and other above-ground parts, and its green color fades to yellow. If left untreated, overly wet conditions can cause leaves to fall or the upper parts of a succulent to soften and rot, eventually killing the plant. Check your plant's soil with your fingertip and, if it feels wet, overwatering is a likely cause.

Yellow Succulent Leaves

Photo via houzz.com

Correcting the Problem

If a succulent has only a few yellow leaves, the problem may correct itself if you stop watering until the soil dries out and then water only when the top 1 to 2 inches (2.5 to 5 cm) of soil feels dry. When a plant starts to drop leaves, it might be necessary to change its soil by removing it from its pot and gently shaking soil from the roots. Repot the plant in a commercial mix designed for succulents or make your own. Repot the plant in a container with a large drainage hole and use an unglazed ceramic pot, which allows the soil to dry quickly. When watering the repotted plant, ensure it does not sit in a water-filled saucer.

Checking for Other Problems

If your plant's soil is a well-draining mix formulated for succulents and overwatering is not the cause, the problem could be the lighting conditions. Most succulents can handle lots of light, but a green succulent that begins to take on a lighter, bleached-out, yellowish color when grown in too much light, such as full sun for the entire day. Moving the plant into a spot that gets bright, indirect light should correct this problem.

A succulent infested with pests might develop yellow leaves, a sign of general distress. For example, mealybugs, which form a cottony covering on leaves or spider mites, tiny insects that can cause yellow spots as they feed, could cause the problem. Spraying a plant with ready-to-use insecticidal soap kills these pests.

Source: sfgate.com

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