Those lovely plants we put in every year. Most annuals are easy to start from seed, either sown directly or started indoors. Sowing directly into the garden is the simplest way to grow annuals. Then choose the plant variety that best grows in that light.
Good drainage is also essential for best growth.
Standing water can rot roots quickly. Till the flower bed 12 inches or more deep. Add fertilizer and soil conditioners for future flowers and healthy growth. Follow package instructions. Some crowding can make the best looking flower beds.