Cut them back yearly in late February, or whenever they become unattractive. Winter color has been weakened by winter weather. Some pansies are recovering, while others still look dead. If there is some life left, fertilize with high nitrogen to boost them up. New options are becoming available at many nurseries and garden centers from left over pansies, to incoming pansies and English primroses.
Roses are still a hit with most people, but there are other options, as well as colors.
For cut flowers, be sure to change the water frequently to help them last. The preservative packet that comes with most flowers will also help. Consider mixed bulb gardens, or houseplants that will keep on giving long after the occasion. Amaryllis bulbs that you received during the holidays are either beginning to bloom or finishing up. To ensure a bloom again next year, cut off the flower stalk after bloom, but keep the foliage in good shape.