Answer: Pansies are considered to be cool season annuals because they do not tolerate summer's heat very well and in fact often die by early to mid-summer. In general they prefer a rich, moist yet well drained (meaning not soggy) soil with a neutral to alkaline pH. Dead heading is a good idea both for appearance's sake and to help the plant direct its energy to producing more blooms. Although the various pansy varieties will not come back from seed as a rule, you may find that the smaller violas will tolerate the heat and also self sow.
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