Many annuals begin to look disreputable by late summer and need to be cut back for regrowth or replaced. Annuals offer the gardener a chance to experiment with color, height, texture, and form. If a mistake is made, it's only for one growing season. Culture and maintenance of annuals Site Selection. Consider aspects of the site that affect plant growth such as light, soil characteristics, and topography.
Different annuals perform well in full sun, light shade, or heavy shade.
The slope of the site will affect temperature and drainage. Soil texture, drainage, fertility, and pH influence plant performance. Preparation is best done in the fall. Proper preparation of soil will enhance success in growing annuals. First, have the soil tested and adjust the pH if needed.