Jade Hairpin: Hardy, most areas can survive the winter in the open, and some of the ground withers and can germinate new shoots in the next year.
Peony: Perennial herb, flowering period 5-6 months, likes the sun, can tolerate cold.
Iris: Flowers are blue-purple, fragrant, cold resistant, and adaptable.
Grass: Native to China, it can be raised as an ornamental flower and can be overwintered in the open ground in North China.
Marshmallows: Large flowers, rich in color, and safe winter in most areas.
Other flowers and plants: torch flowers, platycodon, cannabis, etc.
1. Jade hairpin
Jade hairpin is a kind of negative plant, it likes to grow in a wet environment, the plant is hardy, in most parts of the mainland can spend the winter in the open, after the temperature drops, the part of the ground will wither, but in the second year will germinate new shoots.
2. Peony
Peony is a perennial herb, it is an economic plant with high ornamental value, with thick roots, branches are black-brown, flowering period is 5-6 months, several flowers, mostly grow at the top of the stem and leaf axils, the flowers are rich in color. Peony likes sunshine, is cold tolerant, and can survive the winter in the northern part of the mainland.
Third, Iris
Iris is also known as blue butterfly, purple butterfly, flat bamboo flower, flowering period is 4-5 months, after flowering can be ornamental, the flowers look more elegant and fragrant, the flowers are blue-purple, the flower diameter is about 10cm, with a short peduncle, the flower tube is slender, the upper end is expanded into a trumpet-shaped shape. It's hardy, loves the sun, and has good adaptability.
Fourth, the grass
The origin of Xuancao is China, there are many varieties, it is an important ornamental flower, and it can also be maintained as a cut flower. The soil requirements for the grass during growth are not high, but it is best to use well-drained and humus-rich soil, which is strong in growth, cold tolerant, adaptable, and can overwinter in the open in north China.
5. Hollyhocks
Hollyhock is also known as Yizhang red, Large Shu season, Rong sunflower, widely distributed in China, flowering period from 2 to 8 months, the flowers are large, the diameter is between 6-10cm, the flowers are pink, yellow, red, purple and so on. It prefers a sunny environment, can tolerate semi-shade, and has good cold tolerance, and can safely spend the winter in the north of the mainland.
6. Other flowers and plants
There are many hardy perennial root flowers, including torch flowers, purple flower diptero, eight treasure sedum, black heart chrysanthemum, lotus peony, willow leaf verbena, sun chrysanthemum, golden chrysanthemum, purple echinacea, platycodon, cannabis, marlan, caryophyllus and so on.