What causes the leaves of Rieger begonia to curl at the edges
Rieger begonia is a herbaceous plant in the Begoniaceae family. Its plant form is full and compact, and its flower shapes and colors are diverse, making it a very attractive ornamental species. Because Rieger begonia has a very long flowering period and can also bloom in winter, it is an excellent variety for beautifying indoor environments. But many people who grow Rieger begonia indoors have encountered their Rieger begonia developing withered or curled leaves. So what should we do in this situation? Below, Qinnong Web explains it for everyone.

1. Lack of water
When the leaves become withered and curled, the first thing to check is whether there is too little water. This situation is the most common, and its most obvious feature is that the plant begins to wither gradually from the top downward. The measure to take in this case is to replenish water. You can replenish water by watering promptly and spraying the leaves, and it is best to do both at the same time, as this will let the Rieger begonia recover faster. Note that in high-temperature summer conditions, do not use water that is too cold.
2. Overwatering
Besides lack of water, overwatering can also cause leaf curling. The way to judge this at the time is to observe the potting soil. If there is standing water in the pot, then it may be overwatering, and this is also one of the causes of leaf problems. At this point, the plant needs to be moved indoors, away from light and wind, while also cutting off part of the leaves, appropriately removing part of the soil in the pot, and replacing it with dry soil. Usually after about one to two weeks, the plant in the pot will return to normal.
3. Excessive fertilization
If there is too much fertilizer in the soil, it will cause the plant's moisture to seep outward. This situation is also very serious and may very likely cause the plant to wither, so vigilance is required. At this time, you first need to rinse the potting soil with clean water and promptly drain away the excess water. Or remove part of the soil and replace it with normal soil. In order to help the plant recover promptly, you should also replenish moisture to the leaves at the same time to protect the main parts of the plant.
4. Other factors
If all of the above situations have been ruled out, then you should consider whether pests or diseases have appeared. If no obvious pest damage can be seen on the leaves, then you need to check the plant's roots, promptly use medication, and remove the affected parts.
Rieger begonia likes a semi-shaded growing environment. If the light is too strong, it can also cause problems with the plant's leaves. At this time, the plant needs to be moved to another location promptly, and by sprinkling water and other methods, moisture should be replenished to the plant's leaves.
The above is Qinnong Web's introduction to the causes of curled edges or withered leaves in Rieger begonia and the corresponding measures to deal with them. It can be seen that leaf problems in Rieger begonia are mostly caused by inadequate care. This shows that before planting any kind of plant, we need to understand its growth habits and care methods well, so that we can grow plants well and healthily!