Longevity flowers show yellowing and withering of leaves and black rot of stems in summer. The reason and the solution are here.

Yesterday, a flower friend sent a message saying that the longevity flowers in winter and spring are very luxuriant, and the flowers are full of branches. in the past few days, when they entered the high temperature period, they found that many leaves yellowed and withered, and even a stem appeared black rot. Ask how to deal with it? Today we will solve this problem.

Flower lovers who often breed longevity flowers all know that longevity flowers are flowering plants in winter and spring, like the cool air environment, and flourish in spring, autumn and winter. If the temperature is too high in summer, longevity flowers will go into dormancy or semi-dormancy because of temperature discomfort. At this time, the longevity flowers will grow slowly, the old leaves will be yellow and dry, and so on, which belong to the normal reaction of the plant dormancy period. Another reason is that dormant and semi-dormant longevity flowers do not need a lot of water and nutrients, at this time, if you also give a lot of water and fertilizer supply, or strong light exposure, coupled with plant branches and leaves are too dense, ventilation is not good, longevity flowers are prone to leaf yellowing. If the leaves turn yellow and you don't take them off in time, the yellowed leaves will slowly dry up as the plant grows.

Therefore, experienced flower friends will remove or cut off the branches and leaves or branches that are too dense in early summer, which can not only become more pots in one pot, but also increase plant permeability and avoid all kinds of problems in summer.

It is found that the yellow leaves should be removed in time to reduce nutrient loss, and the plants should be moved to a cool and ventilated place to reduce the watering times, so that the basin soil is not dry and irrigated, and stop fertilizing at the same time. Longevity flowers are very vigorous, even in the hot summer, after removing the yellow leaves, you will find that it will not be long before the new leaves will grow out, and will grow more vigorously than the old leaves, which is a normal response to plant metabolism. Therefore, the earlier the yellow leaves are removed, the faster the new leaves will grow. After the temperature drops in autumn, there will be sufficient supply of water and fertilizer, and the flowers will also be full of branches in winter and spring.

A longevity flower that grows new leaves quickly after removing yellow leaves.

With regard to the problem of stem black rot, most of the reasons are that longevity flowers have black rot. Black rot is caused by a fungus called Fusarium oxysporum. Fusarium oxysporum, which can infect the root soil and the plant itself, is a soil-borne pathogenic fungus. The cause of the disease is that the breeding temperature is too high, the soil is impermeable, too much watering and poor ventilation. Watering under strong sunlight in midsummer is also easy to cause plant black rot. It was found that the black rot of the plant from the root should be pulled out in time, cut off the black rot part, soak the carbendazim or methyl thiophanate powder 200 times in water, dry and put the soil cuttage into the pot again. If one of the branches is black rot, it should be cut off in time, cut off the black rot part, disinfect and then cut again. At the same time, the roots of the original basin soil were disinfected with carbendazim solution to avoid fungal reinfection.