How long does it take for maple leaves to change from red to full red?

It takes about a month for maple leaves to turn red from the beginning to the end.

Maple blossoms from April to May, and bears fruit from September to 65438+1October. With the growth of tree age, the crown gradually opens and becomes round. Branches are brownish red to brown, with small holes, and winter branches are dark brown or gray. Maple leaves are colorful and unique in shape, which can be used to make bookmarks, specimens and so on.

Maple leaves turn fiery red around September in autumn and deep red when they land in October. So it takes about a month for maple leaves to turn red from the beginning to the complete red.

The principle that maple leaves turn red:

Leaves contain a lot of chlorophyll, so the color is green. In autumn, the weather gets cold, the growth rate of trees slows down, and the chlorophyll in leaves is gradually decreasing. Finally, only lutein is left, and the leaves turn yellow. Maple leaf contains a special substance-anthocyanin, which is just the opposite of chlorophyll. As the weather turns cold, the number gradually increases, making the maple leaves turn red.

Refer to the above? Baidu encyclopedia-maple tree