If the flowers are burned by fertilizer, how can they be saved?

Wash the roots and change the pots: remove the overfertilized flowers from the pot in time, then clean the roots of the flowers, cut off the damaged roots and dry and yellowing branches and leaves, and prepare new soil and pots for the flowers. Water thoroughly: immediately water the flowers, watering them thoroughly and leaking, so as to wash the basin soil and discharge high concentration fertilizer, and then observe or do further treatment to the flowers.