Hey, plant lovers! If you've ever stared at a beloved succulent only to find a pile of fallen leaves at the bottom of the pot, don't worry; you're not alone. Leaf drop can be a genuine concern, but don't panic just yet! Succulents are resilient, and addressing the root of the problem is the first step in helping your "little green friend" recover. Here's an in-depth look at the common causes of leaf drop and the corresponding solutions.
Overwatering: The Invisible Killer
One of the most common causes of leaf drop in succulents is overwatering. Unlike many other houseplants, succulents are adapted to survive in arid environments, where they store water through their thick leaves and stems. When succulents are watered too frequently or left in waterlogged soil for extended periods, their roots begin to rot, which in turn causes the leaves to fall off.
How to tell?
Leaves that turn yellow, become limp and fall off easily are typical signs of overwatering. If you notice any of these, carefully remove the plant from the pot and inspect the roots. A healthy root system should be strong and white; if the roots are brown, slimy, or have an unpleasant odour, root rot is likely to have occurred.
How to fix it.
First, stop watering immediately and allow the soil to dry out completely. For plants with severe root rot, you may need to cut off the damaged roots, let the remaining healthy parts dry for a day or two, and wait for the wounds to heal before transplanting them to new, well-drained soil. When watering in the future, be sure to wait until the soil is dry before watering again. An easy way to tell is to stick your finger about 2.5 - 5 cm into the soil. If the soil still feels damp, refrain from watering it.
Underwatering: thirsty plants
On the other hand, underwatering can also cause succulents to lose their leaves. When a succulent is unable to get enough water, it will shed its old leaves to conserve water for the rest of the plant.
How to tell?
Leaves that become dry, wrinkled, and brittle and begin to fall off are a sign of dehydration. The whole plant will also look duller and drier than usual.
How to fix it.
Give your succulents a thorough "soak." Place the pot in a tray filled with water and allow the soil to absorb the water from the bottom. Soak for about 15 - 20 minutes, and drain off any excess water afterwards. In the future, develop a regular watering schedule tailored to your succulent species and the specific environmental conditions in your home. Some succulents may require watering every two weeks, while others can be watered at longer intervals.
Lighting problems: too much or too little
Succulents require ample sunlight to thrive, but excessive or insufficient light can cause problems.
Too much light
If your succulents are exposed to strong, direct sunlight for long periods, especially during the summer, they can become sunburned. Sunburned leaves will develop brown or black spots and eventually fall off.
Insufficient light
Insufficient light can cause the plant to grow in a futile manner, meaning it will attempt to grow upwards in a desperate effort to receive more light. In the process, the lower leaves turn yellow and fall off as the plant focuses its energy on growing taller.
How to fix it.
If your succulent is receiving too much light, move it to a location with diffused light, such as near a window shaded by thin curtains or a shady patio. If there is not enough light, gradually increase the light. Initially, please place it in an area with indirect light for a few hours a day, then gradually increase the light hours over a week or two.
Temperature extremes
Succulents are sensitive to temperature extremes. Cold winds, frost, or overly hot conditions can stress the plant, which in turn can lead to leaf drop.
How to tell?
In cold temperatures, the leaves may darken, soften, or become transparent. In hot environments, the plant may exhibit signs of wilting, with its leaves drying out and falling off more quickly.
How to fix it.
During the winter months, keep your succulents away from vents, doors, and windows to prevent direct exposure to cold air. If it gets frosty in your area, move outdoor succulents indoors or keep them warm. During the summer months, ensure your succulents are not placed near heat sources, such as radiators, or in overly stuffy, enclosed spaces. Find a place with moderate temperatures, ideally in the 15 - 27°C range.
Pests and diseases
Pests such as aphids, mealybugs, and red spiders can attack your succulents, sucking the sap from the leaves, causing them to weaken and fall off. Diseases caused by fungi and bacteria also tend to attack succulents in humid or poorly ventilated environments.
How to tell?
Watch for small insects, spider webs, or sticky residue on the leaves. Discoloured spots, mould, or an unpleasant odour on the leaves may mean a fungal or bacterial infection.
How to fix it.
If it's a pest infestation, wipe the leaves with a cotton swab dipped in alcohol or use an insecticidal soap spray. For fungal or bacterial infections, cut back the infected parts immediately and improve ventilation around the plant. You may also need to treat the plant with a fungicide or bacteriostat according to product instructions.
Natural Aging
Sometimes, leaf drop is just a regular part of a succulent's life cycle. As the plant grows and new leaves continue to grow at the top, the older leaves at the bottom will gradually turn yellow and fall off. This is nothing to worry about; gently remove the fallen leaves to keep the plant tidy.
Remember, every succulent is unique, and finding the best care for them may take some trial and error. Pay close attention to the plant's needs and deal with problems as they arise, and you'll have a healthy, thriving, and vibrant succulent plant. If you have any other tips or experiences with succulents dropping leaves, feel free to share them in the comments section! Let's help these "green babies" grow healthy and bloom beautifully!