There are black spots on the leaves of hibiscus. What's the matter? How to grow hibiscus well?

Hibiscus is a common flower in daily life. Because of its bright color and anti-inflammatory, antibacterial, and blood coagulation effects, flower lovers often grow it in the garden. So what is the matter with the black spots on the leaves of hibiscus? How to grow hibiscus well? Let's take a look together.

There are black spots on the back of the hibiscus leaves. What's going on?

First, carefully observe the blackened parts of the leaves. If there are round protrusions, it means scale insects are causing damage. You can spray them with wind oil, laundry detergent or pesticides such as chlorpyrifos to kill them.

If there is no protrusion but only a flat black spot, it is black spot disease. However, this disease generally occurs not only on the back of the leaves, but there should be black spots on both sides. If there are mild symptoms on the front, spray carbendazim, methyl thiophanate, etc. for prevention and control.

How to grow hibiscus well

Light: It likes sunshine, so try to plant it in a place with plenty of light at home. The hibiscus plant in the question is actually leggy, which means it will grow very tall and have thin branches. If it is in an environment with plenty of light, the hibiscus flower can grow very thick and strong.

Watering: Like most plants, keep the soil moist when dry, and water it only when the soil is completely dry.

Fertilization: Nitrogen fertilizer is usually used as the main fertilizer, and phosphorus fertilizer can be added during the flowering period. If there is enough phosphorus fertilizer, it can bloom continuously, with many flower buds and large flowers.

Soil preparation: It does not require much soil, and ordinary garden soil can be used to grow hibiscus. If you dig the soil from the roadside, remember to disinfect it with potassium permanganate first, otherwise it is easy to carry bacteria and small insects.

Can hibiscus flowers be pinched?

You can pinch the tops of hibiscus. And proper pinching can cultivate a good tree shape and make it more ornamental. But not all seasons are suitable for pinching. Generally, pinching can be chosen in autumn, winter or spring. It is not suitable for pinching in summer due to the high temperature.