When does the maple leaf turn red?

Maple leaves usually turn red in autumn.

Because the temperature drops in autumn, the green pigment of maple leaves gradually turns red. Although autumn in the north is in August-10, it usually doesn't really enter autumn until the end of September, so maple leaves usually don't bloom until September-10. In the south of China, when it is cold later, the maple leaves will turn red later.

Maple leaves are generally palm-shaped, about 13 cm long, slightly wider than adults' palms, with several prominent teeth, heart-shaped base, rough leaves, medium green to dark green at the top, hairy veins at the bottom, and yellow to orange or red in autumn. But a few areas are dark green.

maple leaf

Maple leaf is a maple leaf, which is generally palmately divided, about 13cm long, slightly wider than the palm of an adult. Lobes have several prominent teeth, the base is heart-shaped, the leaves are rough, and turn yellow to orange or red in autumn. It is generally palmately divided, with a length of 13 cm and a width slightly larger than the length. The three largest lobes have some protruding teeth and the base is heart-shaped.

Spring and summer are green, and in autumn, maple leaves are orange or red due to the decrease of chlorophyll and the increase of carotenoids. The reddening degree of maple leaves is related to time, drought, pollution and lack of nitrogen, which is the result of maple trees responding to natural pressure. China has famous scenic spots, such as Xiangshan in Beijing and Tianping Mountain in Suzhou.