Annuals are plants that must be planted each year.  They can grow in flower beds, along borders, in container gardens and hanging baskets. The 15 best annual flowers you'll need to plant in your yard include: Celosia, Dahlias, Impatiens, Begonias, Cosmos, Geraniums, Larkspur, Angelonia, Mums, Marigolds, Pansies, Petunias, Snapdragons, Sunflowers and Vinca. We have those, plus many more.  Take a look at some of the pictures below.