What are the reasons for the curling of cassia leaves? What should I do if the cassia leaves curl?

Gardenia is very common in life. Many flower lovers like to plant some at home because of its fragrant aroma. But when planting, the leaves of Gardenia curled. What are the reasons for the curling of Gardenia leaves? What should I do if the leaves of Gardenia curl? The following editor will explain them one by one, hoping to help you.

What are the reasons for the curling of the leaves of the gardenia?

1. High temperature and drought causing leaf curling

Plants breathe through the pores of their leaves. In the summer, when the water evaporation value of the leaves is greater than the plant's own supply, the plant will activate the physiological self-protection system, the stomata of the leaves will close, and the leaves will curl. Therefore, water should be replenished in summer, and the principle of water replenishment is "no watering at 8 am and 6 pm".

2. Uncertain temperature and curling of leaves

When the temperature fluctuates excessively, the root capillaries are severely damaged, the nutrient absorption function is blocked, and "physiological dysfunction" leaf curling occurs.

3. Improper medium causes leaf curling

Gardenia prefers acid and avoids alkali. If flower lovers use excessive ferrous sulfate improperly, a large amount of nitrate will precipitate in the soil, making it difficult for the roots to absorb water and causing leaf curling. At this time, the soil should be changed and a new one should be planted.

4. Too much nitrogen fertilizer

Too much nitrogen fertilizer will cause the leaflets to turn and twist. When there is a serious lack of trace elements such as phosphorus, potassium, and calcium, the roots will warn through leaf curling. Excessive fertilization will burn the roots, affect root growth, and cause scorched tips and curled leaves.

5. Leaf curling due to lack of light

To be precise, the cassia tree is a strong sun-loving flower. It is not a sun-loving flower that is afraid of the sun as spread on the Internet. This view has misled many people, including me. After years of maintenance, I found that the cassia tree with insufficient light tends to grow too tall, with dense branches and leaves, and weak photosynthesis, resulting in malnutrition of stems and leaves, leading to leaf curling. Most of the leaves curl downward.

6. Pests and diseases causing leaf curling

Such as aphids, thrips, red spiders, whiteflies, scale insects, etc. that suck nutrients from branches and leaves.

7. Physiological weight-bearing leaf curling

For the sake of appearance, greenhouse cassia uses hormone fertilizer to promote buds. Often a small cassia plant is full of buds. Many novices think that more buds are better! But they don’t know that flower buds need to be nurtured to grow. If the potted conditions are limited and there is no greenhouse flower king fertilization technique, it will cause nutrient deficiency and subsequent weakness and curling of leaves. This is often seen in newly bought cassia.

What to do if the leaves of the cassia tree curl

1. Gardenia is a water-loving plant, especially with many leaves, which consume a lot of water through transpiration. Therefore, potted plants need to be watered almost every day, not to mention the hottest days of summer. If the leaves curl due to water loss, water them immediately. If they lose water at noon, place them in a cool and ventilated place for a while before watering again. Some people say that you can't water them at noon. This is normal, and water loss is an abnormal situation. Watering immediately is the rule, don't listen to gossip.

2. Pests such as red spiders have filaments that will cause leaves to curl up when touched. The method is to spray insecticide to kill the insects. Be careful when buying insecticides.

3. Most of the leaves are curled and no insects can be found. You can use fungicides such as chlorothalonil.

4. There are insects such as borers and longhorn beetles in the poles. Note that there are small holes on the poles, and there are sawdust residues excreted by the insects after eating. Use steel wire to reach into the hole, drag out the insects, or stab them to death.

Are there red gardenias?

The color of gardenia in its natural state is yellow or orange, not red! But genetic mutation cannot be ruled out. Some are artificially dyed red!