Unlike annual plants that grow and flower only once, perennials will flower for many years. However, depending on the climate of the area, some perennials may act like annuals and annuals may bloom for several years.
When started from seeds at home, perennials will need one full year before flowering. Seeds planted in spring will be well established for winter. Plants can also be bought in stores ready to plant in the garden for instant color.
Perennials protected by mulch will be more likely to live through the winter. Herbaceous perennials will die to the ground during the winter. Their roots will survive and growth will return when the climate warms back up.
Some perennial plants grow tall and have weak stems that cannot support the weight of their flowers. This will make them topple over. Twigs, bamboo, or wire can be used to support these plants. Make sure to add the stakes early so that the plant growth can disguise it.