Sow outdoors directly in the ground. It's best to sow sunflowers, cosmos, sweet peas and hollyhocks where they will not be disturbed. If you buy these as transplants, handle them carefully. Start them in flats or individual pots for transplanting later. April and May are the major time for starting summer annuals and perennials from seed.
Choices are almost limitless, and many unusual varieties of flowers are available only in seed.
May. They will bloom most heavily spring through summer, but will produce some flowers year round. They like full sun or just a little shade. These are self- sowing and will come back for many years. How to use. A good bet for edging or drifts in a formal bed.