What fertilizer should be used for crab claw orchid should be selected in two different periods:
1, vegetative growth period, is the growth period of crab claw orchid, but it does not bloom. In this period, crab claw orchid usually lasts from March to September, and it will have a dormant period from mid-July to late August.
Multi-element compound fertilizer should be applied once every 5 ~ 20 days/kloc-0. Promote the growth of the whole plant and lay a solid foundation for flowering. No fertilization during dormancy.
2. The reproductive growth period is the flowering period of Crab claw orchid. This period of crab claw orchid is generally from 10 to February of the following year, and the flowering period of crab claw orchid is relatively long. One is to increase the application of phosphorus and potassium fertilizer to it before flowering (just one month in advance), once every 7- 10 days, and increase the application of phosphorus and potassium fertilizer during flowering. Potassium dihydrogen phosphate is a good phosphorus and potassium fertilizer.
3, no matter what fertilizer, grasp the principle of "thin fertilizer and diligent application".
However, I have always believed that all kinds of organic fertilizers are the best. After all, it is pure natural and pollution-free organic food. Organic fertilizer contains all kinds of nutrients needed by plants, with diversity, balance and complexity, which is more conducive to plant absorption.