TheNaturePlanet

Perennial flowers, as a type of perennial herbaceous plants, possess unique growth characteristics and ornamental value. They specifically refer to evergreen herbs whose underground organs have not undergone morphological changes into spherical or 块状 forms, as well as ornamental plants whose above - ground parts wither after flowering. These plants overwinter or over - summer with buds or suckers growing on the underground parts and then bloom again. Due to their long - lasting underground parts and diverse propagation methods, these flowers have become one of the top choices for gardening enthusiasts.
Among numerous perennial flowers, there are many varieties that can survive winter. Here are some common cold - hardy perennial flowers and their characteristics:
Iris: Iris flowers have relatively strong cold - tolerance. They prefer moist, humus - rich, slightly alkaline clay soils. Generally, they grow in marshy soils or shallow water layers. Their flowering period is around March, and they come in a rich variety of colors, including blue - purple, purple, red - purple, yellow, white, etc., which endow them with high ornamental value.
Peony: Peonies are cold - hardy. They require low - temperature frost in winter for flower bud differentiation. Their roots are thick and mostly fleshy. The flower colors are rich, including white, pink, red, purple, etc., and the flowering period is concentrated in late spring and early summer. Not only are peonies beautiful, but their roots can also be used as medicine, having the effects of nourishing blood and regulating menstruation, astringing yin and stopping sweating, and soothing the liver and relieving pain.
Dahlia: Dahlias prefer an environment with sunlight, coolness, warmth, and good ventilation. They require a period of low temperature each year to meet their dormancy needs. With a rich variety of cultivars, dahlias are colorful, have a long flowering period, large flowers, and come in colors such as white, red, purple, etc. They are suitable for being potted flowers or cut flowers for appreciation.
Lily: Lily flowers like a cool and humid climate. They grow best in places with a temperature of 15 - 25℃. They are neither heat - tolerant nor highly cold - tolerant, but some varieties can still survive winter under suitable conditions. Lily flowers are large, funnel - shaped, with richly layered petals radiating outwards from the center. The flower colors include white, pink, yellow, etc., symbolizing purity and elegance.
Dianthus chinensis: Dianthus chinensis is cold - hardy but not heat - tolerant. It likes an environment with sufficient sunlight, dryness, good ventilation, and a cool climate. Its flowers are either solitary at the tip of the branch or several flowers form a cyme. The petals are purple - red, pink, bright red, or white, and the flowering period is from May to June. Dianthus chinensis is not only beautiful but also easy to maintain.
Perennial flowers, with their unique growth characteristics and ornamental value, have become an important part of the horticultural field. And the cold - hardy perennial flowers add boundless vitality to the landscaping in cold seasons. Why not choose some of your favorite cold - hardy perennial flowers to accompany you through this cold winter?