The seasonal flowers in the road greening can enrich the layers and colors between plants, and have the dual functions of protection and ornamental. Adhere to the principles of suitable flowers and suitable for local conditions, and choose the right variety, you can do more with less. Excellent grass flowers should meet the following conditions. Rich flower color, bright color, good ornamental, less pests and diseases; low plant, strong cluster, strong growth, neat corolla, uniform flowering period, long flowering time; fast growth, extensive management, strong adaptability, tolerance Transplant, suitable for open field cultivation and large-scale production; easy to breed, low cost, stable characters, easy to popularize and apply.

Common varieties of seasonal flowers

There are many varieties of grass flowers, which can be roughly divided into two categories: local traditional varieties and imported fine varieties. Local traditional varieties such as Thousand-red Crest, Spike Crown, Cockscomb, Sunflower, Chrysanthemum, Coleus, Canna, etc. have stable characters, strong adaptability, easy planting and breeding, and are familiar to people. In recent years, the introduction of cultivated fine varieties has been increasing day by day, and the promotion and application are good. The varieties have a bunch of red, marigold, dianthus, African impatiens, petunia, pansy, snapdragon, etc., with bright colors, neat flowering and high yield , F 1 generation traits are stable, but the cultivation technique is stronger and breeding is more difficult. F 2 generation traits vary greatly.

Most of the grass flowers used in road greening are one-year and two-year-old herbaceous plants, and a few are perennial grass flowers. Among them, there are more flower ornaments, followed by leaf ornaments, and less fruit ornaments. The color choices of flowers are mainly warm colors such as yellow, orange, and red, giving people a lively, pleasant, and exciting feeling; on the contrary, quiet, elegant, calm blue, purple and other cool colors are not widely used.

For the production and application of annual seasonal flowers, it is necessary to choose a variety suitable for local planting, combine with climate change to flexibly cultivate, and produce high-quality and sufficient flowers.