My personal experience, here to share, I want to tell the friends who bought the old pile of hydrangeas for many years not to tangle, proper maintenance can still make the spring flowers hang on the branches.
In March 2019, online shopping for ten years old pile hydrangeas (not Suqian goods), after studying, learned that there are many points to pay attention to in the maintenance process of hydrangeas, can not be exposed, can not lack of water, can not accumulate water... Therefore, careful maintenance for a year, because of environmental problems, before and after several places, fertilizer also changed several kinds, when the business trip is not at home, but also specifically to find neighbors to help take care of watering. In this year, although taking care of her has been so meticulous, but still entangled in the Internet rumors that "the old pile activity is poor" does not flower, fortunately has never given up, and finally in the spring of 2020, the flowers are full of branches, breaking the spell of the old pile not flowering.
The specific maintenance process is recorded below. I coordinate Beijing, seven gallons of potted plants, into the room for winter. Fertilization history: ferrous sulfate, compound fertilizer, phosphorus and potassium fertilizer, hydrangea nutrient solution, unmodified.
In March 2019, the upper basin.
2. In April 2019, the semi-yin flower trough was planted, the growth was smooth and the state was good.
3. In August 2019, the temperature increased and the leaves were not dehydrated or sunburned. No flower buds are seen.
4. In November 2019, the temperature in the mountainous areas dropped earlier, change 7 gallons, indoor maintenance, and fertilizer on time, mainly ferrous sulfate.
5. In March 2020, buds appeared, so excited, switch to potassium dihydrogen phosphate and hydrangea nutrient solution, and move to the window to bask in the sun, about ten hours a day.
6. In the middle of April 2020, move to the outdoor open, put it under the banana tree for shade maintenance, and the flower buds begin to develop color after May Day. The first time I raised hydrangeas, I didn't dare to try color grading, and I tried to tune it next spring.
7. On May 16, 2020, there are several flowers competing to open, the flower bulb is large, and the flowering is very standard.