To keep the garden blooming always the garden owners always prefers gardening perennial flowers. Perennial flowers are the flowers for all four season and they keep your garden everlasting colorful and also take care of your expenses. There is an advantage of growing perennial flower types, as it needs low maintenance. But low-maintenance doesn't means no-maintenance.

Flowers for all season

Achillea (Yarrow) - It flowers for more than three months. It can grow on any type of soil but it prefers dry soil. Once the blooming cycles completes cut the plant for a healthy growth. The plant dies at the center of the main stem part and should Achillea 'Coronation Gold', A. millefolium 'Fire King', A. m. 'Summer Pastels' be cut after every 3 years. Some of the well -known name of this species is Achillea 'Coronation Gold', A. millefolium 'Fire King', A. m. 'Summer Pastels'

Campanula (Bellflower)- It blooms for more than two months. They are comparatively more lasting than other perennial flower types. They prefer cool season and shady areas. If they look faded after the blooms then trim them off and again they will look fresh. In this perennial flower types there are some well-known names like Campanula carpatica 'Blue Clips' or 'Blue Chips', C. c. 'White Clips' or 'White Chips'

Centranthus (Red Valerian) - It blooms for about 3 - 4 months. Unlike Achillea, it prefers dry undernourished soil. Though it grows on summer season but the flowering lasts longer in winter season. In warm regions it blooms in spring and summer time bloom depends on the plant. It directly grows from seeds and if you cut a branch of it and sow somewhere it denies growing. Regular trimming is necessary for the healthy growth of the plant. The flower type is Centranthus ruber 'Albus'

Coreopsis (Tickseed) - The blooming span of this flower is three months. Though they don't need much care but they live for a short time. They grow from seeds directly or you can cut the branches and replant them at a new place. Flower buds are all over the plant stem and you should trim the plants 1/3 to grow the new flowers. The types of flower in this perennial type are Coreopsis Verticillata 'Zagreb', 'Golden Showers', Grandiflora 'Early Sunrise'.