How to prepare foliar fertilizer for flowers?

The foliar fertilizer of flowers needs different nutrient elements in different growth periods. generally, the foliar fertilizer is mainly nitrogen fertilizer in the vegetative growth period, usually sprayed with 1-4% concentration of urea.

During the reproductive growth period, foliar fertilizer containing phosphorus, hydrogen and boron fertilizer is mainly used, and 0.2% potassium dihydrogen phosphate and 0.1% boron fertilizer solution is usually sprayed.