This can be achieved by pinching the spent blooms from the plant, cutting back extra growth, and fertilizing for blooms rather than leaves. [1] X Research source
Remove any damaged blooms when you remove dead blooms. Be careful not to accidentally remove any new blooms.
If the plant is allowed to dry out or receives too little nutrition it will stop producing blooms and need to be replanted.
If your plant is an heirloom you may be able to save the adult pod and collect seeds to start more pansy plants indoors.
If this occurs frequently do not feel like you’ve failed; certain areas of the country simply are not suited for year round pansy growth. If you can’t find new pansies at your greenhouse to plant in the fall, remember that pansies are simple to start from seed indoors. Plan ahead for next year and start the seedlings indoors four to six weeks before fall. After the temperatures get warmed, plant the new seedlings outdoors.
Consider placing them under a tree that will provide shade for the pansies.
Move the container during the summer to a cooler area to encourage blooms year round.