Annuals last for one season whereas perennials return again and again.
Annuals and perennials are the fastest, least expensive, most satisfying way to achieve quantities of garden color
Planting with Color: Colors yellow to red are considered warm colors and green to violet are considered cool colors. If you have a warm color house, cool color plants will make your home more inviting. This works in opposite to brighten up a house.
Planting with Texture: Add interest with upright or colorful foliage with “regular” or clumping plants to keep the eye moving or to catch the eye for emphasis. Use flowers that spike with drooping or groundcover type flowers.