1, too much water
The growth of happiness tree needs a certain amount of water, but if it is watered too much, its roots will be submerged by accumulated water, making it unable to breathe and its leaves will turn black. In view of this situation, it is necessary to drain the accumulated water in time, loosen the soil properly, and strengthen the air circulation so that the water in the basin soil can evaporate as soon as possible.
2. The light is too strong
Happiness tree is suitable for growing in sunny environment, but it is afraid of strong light. In summer, direct sunlight must be avoided, otherwise the leaves will be sunburned, causing its hair to turn black and scorch. Usually, it can be placed in a sunny place. When it is necessary to shade at noon, it can also be moved to a semi-shaded environment and wait for the sun to shine when the light is not strong.
3. The temperature is too low
Happiness trees usually need to be maintained in a warm place. If the temperature is too low, plants will be frostbitten and the leaves will turn black and zoom. Usually the temperature should be controlled between 20-28℃, and it must not be lower than 8℃ in winter, otherwise the trunk should be wrapped with plastic film to keep warm.
4, pests and diseases
If the happiness tree is infected with insects, the damage of pests and diseases will lead to its poor growth, and some diseases will also hurt its leaves and make it black. After the disease is found, it is necessary to immediately cut off the diseased branches and spray carbendazim and other drugs for treatment. According to different kinds of pests, we should choose different types of pesticides to kill them.
Happiness tree flowering time:
The flowering period of the happiness tree will be from May to September every year. It is more difficult to blossom in the north than in the south. In addition, the happiness trees planted and cultivated must be relatively long before they can blossom. If it is a happy tree with pruning or layering, it will bloom in about two to three years.
The flowers of the happiness tree are small, light yellow and elegant, like morning glory, and the fragrance is calm. After the happiness tree blooms, there are inflorescences on almost every branch. When the petals are open to the public at the same time, they are like golden ribbons. It is not easy to blossom itself, so it must be carefully maintained for a long time.