How long does it take for a maple leaf to turn red? When do maple leaves turn red

Maple leaves generally turn red in autumn.

Because the autumn temperature drops, the maple leaf green of the maple tree gradually turns red, although the autumn in the north is in August and October, but the real autumn is generally not until the end of September, so the maple leaves generally do not turn red until September and October.

The later it gets cold in southern China, the later the maple leaves turn red.

Anthocyanins, also known as red pigments, are located in vacuoles in leaf cells, and unlike other pigments in leaves, they do not participate in photosynthesis.

The main function of the leaves is to obtain the sugar, carbohydrates and other nutrients needed for the growth of trees through photosynthesis, and the reason why these leaves turn red in autumn is that these leaves contain a lot of chlorophyll, lutein, carotenoids, carotene, and anthocyanins.

In summer, the chlorophyll content in the leaves is high, so the bright green overshadows the yellow, and as the temperature drops and the daylight hours become shorter, the chlorophyll is broken down in large quantities, and other pigments such as anthocyanins and carotenoids that are submerged in the leaves are revealed.

"Autumn leaves" are dyed red by the meteorological conditions of autumn, which is also a "physiological" phenomenon unique to autumn leaves.

The northern maple leaves are generally not red until September and October.

It gets cold later in the south and earlier in the north, so the south may not be in September until the beginning of October.

The Guangdong region of Guangxi, south of the reversion to the south, may not turn red until mid-November.

If it's a spring maple leaf, it will take at least six months.

Maple leaves turn red in autumn because the temperature drops, causing the pigment in the maple leaves to turn from green to red. In the north, the real autumn is generally not until the end of September, so the maple leaves in the north turn red in September and October, and the maple leaves in the south will turn red later, basically in October.

The specific reasons why the maple leaves turn red are:

1. Maple leaves contain green chlorophyll, which can help maple trees capture light energy. But in addition to chlorophyll, maple leaves also contain other pigments such as carotene, yellow pigment, and red pigment.

2. In spring and summer, the maple leaves are more active than other pigments because of frequent photosynthesis, so the chlorophyll content at this time is much higher than that of other pigments, so the maple leaves at this time are green. But after autumn, the maple tree begins to lose its leaves, and the maple tree begins to gradually not need as much chlorophyll, so the chlorophyll will begin to gradually break down. As the chlorophyll content decreases, the color of the maple leaf becomes dominated by other pigments, such as yellow pigment and red pigment.

So the maple leaves turn red.

1. Maple leaves generally turn red in autumn.

2. Because the temperature drops in autumn, the maple leaf green of the maple tree gradually turns red. Although autumn in the north is from August to October, it is generally not until the end of September until the end of September, so the maple leaves generally do not turn red until September or October.

3. The later it gets cold in southern China, the later the maple leaves turn red.