Perennials are a great investment for your landscaping design since they live longer than annuals which die after each summer season. They are generally easy to care for and brighten up your yard with various shades of purple, yellow, pink, blue, and even orange. Why purchase new plants annually when you can enjoy the same beautiful blooms year after year? In fact, perennials often produce more color as they persist because their roots spread out very freely. With a minimal amount of effort, you can grow healthy, bright flowers in your garden. Perhaps the longest-living flowering plant is the Virginia blue bells. Although some people claim that it can live as long as its owner, most Virginia blue bells are good for about 20 years. The flowers can be grown in nearly every color (except blue) and occasionally reach an enormous size. You don't have to be overly cautious about cold weather with Virginia blue bells since they need temperatures under 40 degrees Fahrenheit in order to prepare for the spring. They should have full sunlight for at least half of the day. Other perennials with extremely long lifespans include coneflowers,daylilies, and irises. Perennials commonly bloom in late spring and early summer. Some species, such as Catmint, are planted in bunches along a driveway or path to create a luscious row of lavender-blue hedges. In some climates, the flowers stay open and fragrant into the fall months. Catmint makes a good filler plant when placed among roses and late-blooming flowers. If you want an extremely hardy perennial, try yarrow. This species can survive both heat and cold in addition to drought. Other perennials that are in high demand are daffodils, , and tulips. Bearded Iris flowers maintain their color late in the season when their counterparts are beginning to fade. For flashy fall colors, plant chrysanthemums, but remember that they last for only a few seasons. All perennials live for more than two years.