Not only seasonal bedding plants provide these beacons of color. Here we see a colorful bed that uses herbaceous perennials to create the same effect. Perennials in red, orange, magenta and bright yellow are guaranteed to energize your garden. These bold colors always tend to steal the show, so don't try to combine bright colors with pastels.
Plant annuals after the frost. Wait until after the last frost before planting tender annuals such as impatiens and petunias. The National Climatic Data Center can help you determine your region's last frost date.Don’t be in a rush to plant; garden centers often stock summer annuals and tender perennials well before planting time. Know when it’s safe to plant tender annuals.