African violets are beloved for their bright blooms and fuzzy leaves, but leaf changes can signal environmental issues. Luckily, most of these problems are easily fixed. Here's a guide to common African violet leaf problems and their solutions.
Common African Violet Leaf Problems and Solutions
1. Curling Leaves
One of the most common issues is African violet leaves curling under. This is usually caused by cold air or direct sunlight.
- Cold Air: African violets like to be cozy. If the leaves are curling under and turning brittle, they are not warm enough. Move the plant to a location with a steady temperature of 68-70ºF.
- Direct Sunlight: If the plant is in a windowsill or a sunny room, too much sunlight might be the cause. Move the plant to a location with bright, indirect sunlight.
2. Brown, Crispy Leaves
Brown, crispy leaves are a sign that something has gone wrong. Several issues can cause this:
- Wet Leaves in Sunlight: If you accidentally get the leaves wet while watering and they're exposed to direct sunlight, it can lead to brown spots and sunburn. Remove the affected leaves.
- Overfertilization: If the leaves are brown and crispy around the edges, there may be issues below ground. Examine the pot for salt buildup on the soil, leaves, or rim. Flush the soil with room-temperature water.
3. Yellowing Leaves
When a leaf yellows, it’s a likely sign it’s starting its journey to the great greenhouse in the sky. Each leaf on an African violet will live about a year. As it nears the end of its life cycle, your plant will stop sending nutrients in its direction; instead, it saves that energy for higher-functioning foliage. If you notice the leaves closest to the surface turning yellow, they’re probably on their way out.
4. Limp and Droopy Leaves
If your African violet leaves have lost their vigor and are limp and droopy, the plant can’t properly deliver nutrients to its cells. This can be caused by:
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- Underwatering: Check the soil; if it’s bone-dry, the plant is dehydrated. Set it in a tray of room-temperature water and allow it to take up as much water as it needs through the holes in the bottom of its pot.
- Overwatering: If the soil feels damp or mushy, remove your plant from its soil and check for root rot.
5. Brown Spots
Brown spots can be caused by exposing wet leaves to sunlight, but if they’re developing near the center of the leaf and your plant appears otherwise healthy, sunlight may not be the culprit.
- Chloramines: If you’re watering your plant with tap water, chloramines may be responsible for this African violet leaf problem.
6. White Mildew
With winter comes snow-and, unfortunately, snow-like fungus. White mildew is a common fungal disease that affects indoor plants.
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Other Important Factors
1. Repotting
Once your violet is fully mature, it needs to be repotted twice a year. A full-grown violet will not need to pot up, as you’ll always be removing extra leaves as it grows. Repot it in the same size pot. To keep the plant’s roots healthy and the stalk from becoming too gangly, the plant should be repotted twice a year, the root ball trimmed, and the stalk planted deeper in the potting mix.
2. Potting Mix
African violets are notorious for developing root rot if kept in a general-purpose potting mix, especially if you let the plant sit in water after it has been watered. Avoid these issues by using a specially blended African violet potting mix that is light and quick draining.
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3. Fertilizer
The plants you grow in pots can’t draw nutrients from the soil as they would in the wild. They’re kept on the smaller side, and the smaller pot means less soil, so they run out of nutrients quicker. Flush the soil once a month by watering it without fertilizer. Choose a fertilizer with a higher amount of potassium in it than nitrogen or phosphorous.
4. Humidity
African violets need moist air to do well. If your home is dry, keep your plants on pebble trays filled with water, or purchase a small cool-mist humidifier to run near them.
5. Pot Size
For all plants, not just African violets, the size of the mature root system dictates pot size.
6. Removing Suckers
Suckers are tiny, new plants that sometimes develop on the stalk of the existing crown. Using a clean pair of scissors, you can snip them off. Or, just as easily, you can twist them off with your fingers. Press it down into a small pot filled with damp African violet potting mix. Cover the pot with clear plastic or glass to keep in the humidity. Place the tiny sucker where it will receive plenty of bright light. Meanwhile, the main plant you removed the sucker from can now put more nutrients toward flowers.
7. Pruning Leaves
African violets continuously produce new leaves as the plant grows. All other leaves beyond that can be removed, starting at the base of the stalk, closest to the soil and moving upwards.
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8. Light
African violets need bright, indirect light to thrive and even more to bloom consistently. Near a southern-facing window is a great place to keep your African violet so it will bloom all year long. If you don’t have good light, it’s time to get out the grow lights.
9. Temperature
If you place African violets directly in a window to give them the light they need to blossom, keep in mind that the amount of sun they receive there will change throughout the year. On the flip side, if you live somewhere with cold temperatures in the winter, you’ll need to keep your plants away from drafts and windowsills.
Crowded Leaves and Tight Crowns
African violets like it a little crowded above ground and below, but they can start to struggle if it gets too tight. Suboptimal environmental factors can cause tight crown growth. In other cases, leaves can become clustered and overgrown naturally and will need to be pruned.
- Overfertilization: If your African violet’s crowded leaves look rusty, burnt, or yellow, flush the soil with room-temperature water several times and hold off on fertilizing for a month.
- Excess Light: If your plant’s leaves are drooping down or curling inward and tightly huddling together, move the plant to a location with low-filtered light.
- Excess Heat: If your plant’s flowers are streaking, losing color, or dropping altogether, and you notice its leaves curling inward, it could be due to excess heat.
To keep your plant healthy, remove three or more bottom leaves every month. This helps make room for new growth and gives the remaining foliage space to stretch out a bit. Remove older leaves by pinching the stem between your fingers where it connects with the plant base. If the parent plant is looking extra full but doesn’t have suckers, pinch a few other leaves higher up the base. Moving radially, remove every two to three leaves in each row.
By addressing these common issues and providing the right care, you can keep your African violet healthy and thriving.
| Problem | Possible Causes | Solutions |
|---|---|---|
| Curling Leaves | Cold air, direct sunlight | Move to warmer location, provide indirect sunlight |
| Brown, Crispy Leaves | Wet leaves in sunlight, overfertilization | Avoid wetting leaves, flush soil with water |
| Limp, Droopy Leaves | Underwatering, overwatering | Water thoroughly, check for root rot |
| Crowded Leaves | Overfertilization, excess light, excess heat, suckers | Flush soil, adjust light, remove suckers, prune leaves |
