Which succulents are prone to black rot in summer
Do you know these? Here are some experiences in green plant care regarding succulents that are prone to black rot in summer. The following is a comprehensive introduction.
Which succulents are prone to black rot in summer
Although the formation of black rot disease is multifaceted, it is also related to the resistance of the plant variety itself. Among the numerous succulents, varieties such as Echeveria, Sedum 'Night', 'Little Red', 'Blue Bean', 'White Peony', 'Dongyun', 'Snow莲', 'Mountain Rose', 'Pea Egg', 'Baby Fingers', and 'Wizard' are particularly susceptible to black rot. On the other hand, Sedum 'Grandiflorum' and other succulents with less obvious dormancy periods can survive the summer without issues.
Echeveria succulent (image)
These varieties are relatively prone to black rot disease in summer
Although the formation of black rot disease is multifaceted, it is also related to the resistance of the plant variety itself.
Among the numerous succulents, Echeveria, Sedum 'Night', 'Little Red', 'Blue Bean', 'White Peony', 'Dongyun', 'Snow莲', 'Mountain Rose', 'Pea Egg', 'Baby Fingers', and 'Wizard' are particularly susceptible to black rot.
Sedum 'Grandiflorum' and other succulents with less obvious dormancy periods can survive the summer without issues, which is why there is a popular "summer death list" in the succulent community. Although it is not absolute, it is indeed the experience of some seasoned gardeners.
Sedum 'Night' succulent (image)
Symptoms and causes of black rot disease
Black rot disease is caused by Fusarium infection. The main causes of the disease are high temperatures and humidity in summer, long-term waterlogging in the pot, and poor ventilation in the growing environment.
Black rot disease is parasitic and contagious. It can quickly spread through the channels of the succulent plant that transport water and nutrients.
It can only be controlled by using systemic fungicides, and the earlier the treatment, the better the effect. Cutting off the head of the succulent plant with black rot in the root and stem is also a quick补救 way to stop the disease.
Pea Egg succulent (image)
Prevention is recommended for black rot disease
(1) Provide shading during high temperaturesIn summer, if the local temperature continues to exceed 32°C, it is necessary to pull a shading net over the succulent plants to block some direct sunlight. This can prevent leaf sunburn and reduce the probability of black rot disease.
In the hottest months of July and August, gardeners with a small number of succulents can also place them in cool and well-ventilated areas to survive the summer.
Baby Fingers succulent (image)
(2) Moderate watering, keep the potting soil dryDuring the high summer temperatures, most succulents grow slowly or almost stop growing, entering a state of dormancy or semi-dormancy, with relatively weak resistance.
At this time, in addition to avoiding rain, watering should also be moderate, and the time for watering should be chosen in the relatively cool morning or evening, and there is no need to water frequently if the potting soil is not dry.
Wild Horse Dongyun succulent (image)
(3) Use medication in advance, focusing on preventionBefore summer, you can also spray or water your succulents with systemic fungicides 1-2 times to focus on prevention.
Chemicals such as carbendazim, thiabendazole, triadimefon, and hymexazol are commonly used systemic fungicides. In addition to preventing black rot disease, they also have a certain inhibitory effect on other common diseases in succulents, such as powdery mildew and soot blight.
The above is a comprehensive introduction to the succulents that are prone to black rot in summer, hoping to bring some knowledge about green plants to green plant enthusiasts.