Can flowers apply urea?

Urea can be applied to flowers, but not too much. When applying urea to flowers, you can generally use bamboo sticks to pierce some holes in the soil of the flowerpot, with a depth of about 5-8 cm, and then put urea particles in it, about 20 at a time; or you can dilute urea in water, and then spray the flowers on the leaves, spraying 1-2 times a week.