Check the calendar for possible dormancy. Mums may begin to fade in late fall and winter. Place dormant plants a cool area with temperatures above 32 degrees F. Water potted mums only as needed and leave them undisturbed until spring. Remove dead stems once new growth appears.
Pull off dead flower blooms immediately to encourage new growth. Add 1 tsp. of liquid 20-20-20 fertilizer to 1 gallon of fresh water in a watering can. Water plants as needed, when the soil feels dry to the touch.
Place the potted plant in a place where it will receive indirect light. Exposing plants to indirect sunlight will dry it out and fade flowers.
Give flowers a comfortable room temperature between 60 and 65 degrees F.