There is also trumpet honeysuckle, which has clusters of red and yellow perfumed flowers; and climbing hydrangea, with its large white clusters. Some of annual vines, such as hyacinth bean which grows on strings and has many flowers, or scarlet runner bean which has showy flowers, are good for shade, too.

For covering banks and ground where you have difficulty with grass, you might try periwinkle (also called running myrtle), an evergreen which has blue flowers all summer. Another evergreen is pachysandra, mentioned elsewhere; and there is moneywort which flattens against ground.

Some attractive and fragrant-blossoming annuals that you might also consider are: nasturtium; bal-foon vine, which is good to cover fences; cypress vine, with a large number of small star-shaped flowers in orange, red and white, and familiar morning-glory and moonflower plants.

Other perennials are continually being developed by amateur botanists and gardeners. As a result of this cultivation and inbreeding, perennials as a rule are not as hardy as other varieties. Another disadvantage is tendency of certain perennials to die down after flowering, thereby leaving gaps in garden.

There are a number of ways to solve problems of short-flowering periods and resultant unsightly spaces. One way is to intersperse perennials with annuals and other bulbs and flowering plants whose bloom occurs either later or earlier than that of perennials. Some perennials are easy to transplant: chrysanthemums, for example, can be moved from one place to another with no noticeable effect on their vigor.

This is another way to keep color and bloom throughout growing season. A garden of perennials, either by themselves or mixed with annuals and other bulbs, should be placed along a path, or as a border, with a background of trees, shrubs, a wall or fence.

The background shows brilliant coloring to best advantage. Some varieties can flourish in shade, such as anemone, lily of valley, day lilies, sweet pea, primrose, hollyhock, harebell and peonies, but these flowers must be chosen carefully and faced so that some sun reaches them every day.