What should be paid attention to when planting hydrangeas outdoors
The editor answers for the netizens what should be paid attention to when planting hydrangeas outdoors and the maintenance methods of planting hydrangeas, which are related experiences of flowering plant cultivation. These are very useful tips, recommended for collection!
Placing hydrangeas outdoors in the open air allows them to receive direct sunlight, and the stronger the light, the higher the quality of the hydrangea flowers. Intense sunlight can significantly increase the number of blooms, and the diameter of the flower buds will also be larger when they open. The outdoor open environment is often more suitable for the growth of hydrangeas, with ample sunlight and good ventilation, allowing the roots to absorb more nutrients.
There is a significant disadvantage to growing hydrangeas outdoors: if the soil remains moist for a long time and the environment is not well-ventilated, it is prone to infection by pathogens. Hydrangeas are not easily affected by pests, but they are susceptible to diseases, especially in the summer when temperatures and humidity are high, and there is a lot of rainfall. Prolonged rainfall can lead to rainwater seeping into the pot, which cannot be dissipated in a short time, causing the leaves of the hydrangea to easily become infected with pathogens.
"Grey Mold" is the most common disease found on hydrangeas, especially after the rain. The green leaves of the hydrangea will slowly turn grey, and in severe cases, they will turn white, making it look like a layer of white ash has settled on the leaves, similar to moldy hair. This is a typical case of grey mold, which can be found on many plants, including many fruits and vegetables, such as ripe cherries in the summer.
If grey mold is not treated promptly with fungicides, the leaves of the hydrangea might be completely infected. Within two weeks, the leaves will fall off, and the once lush green leaves will fall off naturally with a gentle touch. This condition is considered to be critical.
What should be paid attention to when planting hydrangeas outdoors
Hydrangea flowering relies entirely on the leaves for photosynthesis. If all the leaves fall off, it will affect the flowering. Grey mold does not affect the life or death of the hydrangea but mainly affects its growth and flowering.
When grey mold appears, fungicides are usually sprayed. The fungicides are mixed with water and sprayed on the leaves of the hydrangea, both on the front and back, as well as on the surface of the soil.
Carbendazim is the most commonly used fungicide and is generally quite versatile, effective against many types of pathogens. It should be sprayed every 2 to 3 days, and after 4 to 5 consecutive applications, it will basically completely kill the disease.