In the autumn, the temperature decreases American maple seedlings, US Maple gradually stop the synthesis of chlorophyll chloroplast began to decompose them into energy for storage, preparation for winter. Then the leaves on the show anthocyanins and carotenoids colors, if a large proportion of anthocyanins, American maple leaf color is mainly in red, on the contrary, a large proportion of carotenoids American maple seedlings planted cooperatives, the performance yellow. Both proportions are similar, it will show as orange. It is important to keep the soil moist, to ensure moist soil surface has been particularly important, one to two hours after the species must be irrigated, soil moisture and less long intervals but can not, and if the initial watering seedlings blade allows water to hang on better. Of course, the best way is to supply sprinkler October brilliant American Maple, no sprinkler irrigation conditions on irrigation, appropriate to reduce the amount of each irrigation, water supply and shorten the interval, 5-7 days to enter the normal growth and maintenance of that can. American maple seedlings planted cooperatives, grand seedlings (certified), the United States provided by Weifang grand maple seedling cultivation base. Weifang grand seedling cultivation base (www.wfsdmm.com) Shandong Weifang, flowers leaders, over the years, the company is implementing 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.