What are the plants that forecast the weather in grade two?

What are the secondary plants that forecast the weather?

First of all, Percy

Viola is a biennial or perennial herb. Its leaves are very interesting and can measure the temperature like a thermometer, so it is called "warm grass". Its leaves are extremely sensitive to temperature. When the temperature is above 20℃, the leaves extend obliquely upward.

Second, pumpkin vines

Cucurbitaceae, an annual creeping herb; Stems usually take root at nodes, reaching 2-5 meters long and densely covered with short white bristles. In the summer morning, it is found that the top of pumpkin vine is generally upward, which indicates that the weather will turn from sunny to rainy. On the contrary, if the top of the pumpkin vine is generally downward in rainy weather, it indicates that the weather will be fine.

Third, willow trees.

Salix of Salicaceae likes light, humidity and cold, and is a mesophyte and humidity-loving plant. In summer, willow leaves droop and sway with the wind, which is a kind of scenery; But if the willow leaves turn white, it indicates that rainy weather is coming.

Fourth, mimosa

Mimosa leguminosa, a loose shrubby herb, can reach a height of 1 m; The stem is cylindrical, branched, with scattered downward bending barbs and inverted barbs. Leaves contract slowly after being touched, or open when they are slightly closed, indicating the future of wind and rain; It closes quickly after being touched, but it takes a long time to recover, which indicates that the future will be sunny.

Verb (abbreviation of verb) Artemisia scoparia

Artemisia plants in Compositae are perennial herbs or slightly semi-shrub-like, with strong fragrance, and are wild plants in Compositae with strong drought tolerance. If it is found that many tender buds are born at its roots in dry weather, it indicates that it will rain soon.

Six, mirabilis jalapa

Mirabilis, Panicum, height up to 1 m. It usually blooms the first night and withers the next morning. If the flowers wither at dawn, it means that the weather will be fine that day; If the flowers wither later, it indicates that it will rain that day.

Seven, moss

Adhesion on the surface of an object spreads and grows, so it is also called coating. This is a very humble but very interesting plant. Moss can also predict the weather. When we see moss on the river, it means that it will rain heavily. This is because the water pressure decreases, and the moss at the bottom will surface.