In the autumn, the temperature decreases, the United States Hongfeng gradually stop the synthesis of chlorophyll chloroplast began to break them into energy for storage, US maple cultivation base, ready for winter. Then the leaves on the show anthocyanin and carotene color, if a large proportion of anthocyanin, American red maple leaf color is mainly in red, on the contrary, a large proportion of carotenoids, is shown as yellow. Both proportions are similar, it will show as orange. There are two main American Maple reproduction, sexual and asexual reproduction. Sexual reproduction is usually by seed breeding, in the process of sexual reproduction genes recombination, October brilliant American maple, mutation, that is to say the United States maple sapling was obtained by seed propagation trait is unstable autumn blaze maple United States, which resulted in the United States when the red maple color unstable and may not change color, and leaf color may be not the same as the female plants. Chlorophyll, chloroplast is undoubtedly green performance. Anthocyanins are red performance, meet the basic substance will show purple. Carotene is manifested in orange or yellow, depending on changes in the environment of sugar by the American Maple collectively known as anthocyanins or carotenoids. In the spring, the new US Maple leaf will show a little red, mainly due to the impact of anthocyanins, US Maple, and then when the leaves grow up and start photosynthesis, the synthesis of a large number of chloroplasts and chlorophyll, American red maple leaves gradually turn green. American Autumn Flame Maple, American maple, grand seedlings (view) provided by the Weifang Grand seedling cultivation base. Weifang Grand seedling cultivation base (www.wfsdmm.com) Shandong Weifang, flowers leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the grand seedlings leadership with the staff warmly welcome all inquiries negotiations to create a better future grand seedlings.