Key points of maintenance 1: Rhododendron likes acid
I don't know if any friends found that the leaves of their own Rhododendron are easy to turn yellow. Even if they were watered with ferrous sulfate, it is difficult to turn green. Why is this? In fact, if the soil is acidic, it has something to do with the Rhododendron's temper p>
So what should I do to get an acidic soil. Every household can use white vinegar. In addition to its seasoning function, it can also be used to adjust the pH of the soil p>
Every time you water the azalea, drop a few drops of white vinegar into the water to get an acidic soil p>
Of course, if it is planted in the ground or a friend who is too troublesome, you can bury sulfur powder in the soil. After being buried, the sulfur powder will be oxidized, which can also make it acidic p>
Key points of maintenance 2: fertilization
Rhododendron is a plant that likes fertilizer very much, but is prone to fertilizer injury. When fertilizing azalea, we must abide by the "thin fertilizer and frequent application", otherwise the fertilizer injury and death caused by improper fertilization will not pay off p>
Now is the flowering period of the azalea. I will mix the cake fertilizer with water for the azalea. Cake fertilizer can provide nutrients for azalea, so as to ensure the nutrition required for flowering p>
Of course, cake fertilizer alone is not enough. I will also use a urea, because Rhododendron is a plant with new shoots and flowers. If you want to bloom well, you have to grow well p>
△ new shoots
Urea is a kind of high nitrogen fertilizer, which can promote the growth of branches. After the branches grow, they can differentiate into more flower buds p>
Usually, when fertilizing, cake fertilizer and urea are used in turn. Cake fertilizer is only used this week, and urea is used next week to ensure the comprehensive supply of nutrition p>
Maintenance point 3: reasonable pruning
The single flower of Rhododendron can bloom for a long time, but once it fails, it needs to be cut off to avoid the inhibition of flower formation in the later stage caused by nutrient diversion p>
Also, the weak branches should be trimmed. The weak branches can't produce big colorful flowers~
As shown in the figure above, cut off one-third of the branch with scissors after flowering, so as to enhance internal ventilation, light and branch growth p>
After flowering and pruning, do a good job in water and fertilizer management, and bloom again at the end of June, so as to prolong the flowering time p>
Key points of maintenance 4: diseases and insect pests
It's easier for me to find Rhododendron and Rhododendron after three years of planting, especially after the season of plum rain p>
Red spider is a kind of spider mite. It will suck the juice of plants. Although it will not cause death, it will seriously affect its photosynthesis and reduce the amount of flowers p>
Brown spot disease occurs in a large area of brown to dark brown spots, and death will occur in severe cases! Therefore, we should not take it lightly p>
Red spider can be killed by spraying avermectin once a week for three or four times in a row. Remember to spray on the back of the leaf, which is the hardest hit area of Starscream p>
In case of brown spot disease, spray 800 times of methyletobuzine or 1000 times of leaf spot Tongsha, once in 10 days, and spray 2 ~ 3 times in a row p>
Photograph: CJA # CC Tuan
Submission email of flower cultivation Daquan:
In fact, cuckoos are very easy to grow
As long as you master the method
It can also make the cuckoo at home explode p>