At first onset, the upper portion of the tip and leaf margin chlorosis produce small water-soaked spots, red maple (Fig. 4) then as the progression of the disease, the Ministry of disease appear scorched shape, and gradually expand to the lower part of the blade and the inside of the blade half dead. Disease and Health Department of the Ministry of the junction of russet, deep red in autumn blaze maple United States, the last 3/4 of the entire dead leaf, green leaf base only, US Maple, part of the tip curled dead, pale, Whole plant leaves like fire. Since the leaves lose chlorophyll, seriously affecting photosynthesis, the plants grow weak, loss of aesthetic value. US relations with its red maple leaf variety of colors. Information from the University of Florida shows that the main difference lies in the United States each species maple tree leaf color instead. US Maple growth rate depends on the cultivation conditions, such as soil cultivation, the amount of rainfall or irrigation, pest control and so on. For example, October brilliant (autumn maple) and red sunset in the southern United States generally low growing, but in the wet side of the river or marshes, growing tall, and relatively quickly. Thus, a reasonable irrigation favorable growing American maple. We grow in the Shanghai American Maple hardly long, the survey found that the original Shanghai offshore, Weifang American Maple, soil salinization serious side, high-quality American maple, relatively heavy clay, is not conducive to the growth of American maple. But is not the problem of Jiangsu and Zhejiang. Asexual propagation by cuttings is generally cultivate seedlings, tissue culture and other means. Saplings direct maternal traits inherited mutation does not occur. That leaves the female plants is what color, American maple seedlings will show what color. Asexual reproduction by American maple seedlings obtained color will be very stable. We will best quality seedlings at the best price available to you, truly affordable! Weifang Grand American maple seedlings _ (Online) _ 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 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.