It doesn't matter that these flowers are extremely hardy plants raised in the yard to survive the winter.

If you want to plant plants directly in the yard, you should think about whether they can adapt to the outdoor environment and whether they will freeze to death when it is colder in winter. the following flowers are extremely hardy. They can grow well below zero in winter, and some will wither in winter, but can grow again after warm spring.

1. Purple flower

Aristolochia is a very growing herb that can bloom in places with plenty of sunlight or scattered light, usually purple or pink. It is recommended to cut off the residual flowers in time after flowering.

two。 Fake indigo flower

Pseudo-indigo flowers are extremely hardy flowers that can be kept for decades. They can endure temperatures below zero. The most common colors are blue, purple, white and yellow flowers. They grow very slowly and take a long time to grow strong roots.

3. Cat mint

Cat mint is a relatively hardy perennial herb, it has charming fragrance, the leaves can remain green all the year round, it looks a bit like lavender, cat mint can also withstand the cold winter, it is suitable to keep in the yard, it can produce charming clusters of flowers in spring and summer.

4. Peony flower

Peony flowers have different shapes and colors, and the variety is very rich. Most of them are not afraid of the cold winter. They will fall into dormancy in winter and return to growth after the warmth of spring. The peonies are very beautiful. In late spring and early summer, they can produce charming flowers with charming fragrance.

5. Echinacea

Echinacea has a strong ability to adapt to the environment, can grow well in loose and drained soil, can produce attractive purple, white, orange and yellow flowers, and has no problem in cold winter.

6. American mint

American peppermint is also called horse mint. Its plant is relatively tall and easy to reproduce. You should plant it in a flowerpot. It can grow well in places with more sunshine. The flower colors are common purple, pink, red and orange. Its flowers look very bright, very attractive to bees, and are very ornamental.

7. Iris sibirica

Siberian iris is a relatively hardy iris variety, which can grow well at sub-zero temperature, it can grow to more than one meter high, and there are common varieties such as purple, blue and yellow. The purpose of cultivation is to keep the soil moist and avoid excessive drought.

8. Kale

Kale is an ornamental plant cultivated by vegetables, its plant is relatively low, you can raise it in sunny or semi-overcast environment, the cultivated soil must maintain good drainage, it can endure cold winter, there are many mixed-color varieties.

9. Heather flower

The heather flower has a very long flowering period, the flower is petite, the ornamental is very good, it can adapt to the very cold winter, but can not grow in the place where the summer temperature is too high, there are many colors, such as the common purple, pink and white, their flowers are very delicate and charming, they like to grow in neutral or acidic soil.