Reasons for Dry, Withered Leaves on Crabapple (Begonia) and How to Fix Them
1. Observe carefully
First, we need a general understanding of the plant's drying-out problem. Observe carefully from top to bottom and note which leaves have dried out; then it is best to work out what is causing the leaves to dry, since only by analyzing the cause can you be sure of the best solution.
2. Dealing with different problems
1) Dry soil
If you find that the potting soil has become very dry, then it is fairly certain that the cause is a lack of water. In this situation, many people may immediately add a large amount of water, but in fact a plant that has been dry for a long time cannot be given a large amount of water right away; this will not only harm the plant but may even kill it. It is best to first use a spray bottle to give the plant a light watering, then gradually increase the amount of water. In addition, crabapple does not need watering every day; it is enough to keep the soil slightly moist.
2) Insufficient light
In fact, the crabapple is a plant that relatively likes sunlight. If it does not receive light for a long time, the plant will certainly lose its vigor and become limp and dry. What we need to do then is move the pot from the cold, dim space to a spot with better light and plenty of sunshine for care; generally, after a few days the plant's drying-out will improve.
3) Insufficient nutrients
We all know that plants, like people, need a constant supply of nutrients to grow well. If you find that your plant has yellowing leaves and drooping foliage, then it is almost certain that the plant needs more nutrients. Adding some potassium and phosphorus fertilizer at the right time will gradually restore the leaves to a vivid green, but be sure to pay attention to the dosage to avoid harming the roots.
4) Caused by pests and diseases, and lack of timely ventilation
Finally, there is another possibility: the plant has been attacked by pests and diseases. Besides overwatering and not paying attention to the hygiene of the potting soil, this situation is also closely related to a lack of timely ventilation. To solve this kind of drying-out, you need to spot the pests and diseases in time and then treat them accordingly. Commonly, agents such as dimethoate or Bordeaux mixture can be used for control. Also, be sure to pay attention to ventilation! That way the plant can stay healthy and well!