What is the national flower of Ukraine?

Nowadays, the situation in Ukraine affects people all over the world, and PANTONE, an authoritative color research institution that has always been very concerned about fashion trends and social issues, speaks with colors, calls for peace in its own way, and prays for people in the war, redefines the two colors of the Ukrainian flag and gives them the names "Free Blue" (# 005BBB) and "Vigorous".

These two bright colors echo the national flower of Ukraine-sunflower. Seeing these two colors is like seeing sunflowers blooming in the blue sky and sunshine, looking forward to a bright and positive future, and the power born in the sunshine arises spontaneously.

-Top copywriting

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Recently I went to the sunflower base. Someone asked: Sunflowers follow the sun, so how can they turn back at night?

How did it turn? It seems that it is mentioned in primary school textbooks, or there is an explanation in plant physiology, but many people forget it. This article will talk about the past lives of sunflowers!

Keywords sunflower, compositae panicum miliaceum,

Because the surface of the sunflower disk rotates towards the sun, it is also called Yin-Yang Flower, Sunflower, Sunflower, Sunflower, Sunflower, Sunflower, Sunflower, Sunflower, Sunflower, Sunflower and Sunflower, and it is also known as one of the compositae plants with large plants and flowers.

Sunflowers are native to 30 ~ 40 N in southern North America and northern Mexico. According to research, sunflower was introduced to China in the middle of Ming Dynasty, and it has a long cultivation history.

Sunflowers were first mentioned in the late Qing Dynasty that "seeds can extract oil". It can be seen that sunflower was first planted as a small oil crop, and later a large area of ornamental sunflower was cultivated through long-term excellent flowers and excellent materials.

On the expansion of sunflower seeds

"A Brief Study of Agricultural Products in Fujun County" states that sunflowers can be planted anywhere in the fields near the wall, indicating that sunflowers have been planted sporadically as ornamental plants and small oil crops in China.

In the 19th year of the Republic of China (1930), the Records of Hulan County, Heilongjiang Province recorded: "Sunflowers are edible. Others talk about Mu. " This shows that in 1930, large-scale sunflower planting began in northeast China.

Early sunflower planting areas are mainly distributed in Northeast China, North China and Northwest China.

In the 1960s and 1970s, the planting area in Northeast China was the largest.

After 1980s, the sunflower planting and production centers began to move westward, and Inner Mongolia, Xinjiang and Gansu became the main areas for increasing sunflower planting area in China.

In the late 1980s, a few ornamental sunflowers were planted.

Before large-scale planting, sunflowers were imported from China and monopolized by Europeans. After decades of hard work, the sunflower is finally free!

Sunflowers can be seen almost all year round, the best seasons are summer and winter, the sky is cloudless in Wan Li, and the bright colors of sunflowers warm people's hearts (usually sown in June-April or September-June, and bloom 60-70 days after sowing), while cut sunflowers are available all year round, with diverse varieties and rich colors.

Source: Observation on planting performance of ornamental sunflower varieties in Shanghai in summer; Ornamental sunflower variety shape

At present, in addition to the common yellow, there are many colors on a flower, such as orange, peach, red, white, lemon, bronze rust, light green, black and so on, as well as many colors that can bloom. Patterns can be divided into single petals and double petals.

Source: China Flower Horticulture No.2019 18.

This is the charm of ornamental sunflowers, but also because ornamental sunflowers have small seeds, poor seed setting rate and are rarely eaten, and the seeds on the market prefer to be imported.

Source: flower gardening

Sunflowers are popular because of their colorful colors and huge flower plates. They will be used in various festivals, anniversaries, banquets and so on.

So how does the sunflower "turn back" at night?

Sunflowers have a strong phototaxis, so they will always grow in the direction of light. As long as there is light, it will have the power of growth and openness until it withers.

Since it is heading for a place with light, it will keep turning and slowly adjust its rotation. It's not a sunflower in a plant versus a zombie, and it won't go downhill. Is it really terrible to turn around quickly?

This issue of sunflower said, I wish you a sunny mood like sunflower every day!

What kind of flowers do you want to know? Please tell me in the comments section!