The original poster had asked about a "coral bark maple" or Sango Kaku. Noted for its showy coral bark and fall color, award-winning Acer palmatum 'Sango-kaku' (Coral-Bark Maple) is a large deciduous shrub or small tree that is highly desirable. Some do better than others. question by eabcpa november 13, 2006. i purchased 2 monrovia coral bark maples approx 2 years ago. In the fall, the delicate 5-lobed leaves which open pinkish-yellow, and mature to light green in summer, warm up to a soft yellow in fall before they shed to the ground. 30° to 35° F Elizabeth-Your very welcome. Don't feel bad about your Coral Bark. However, for some reason, this year it reseeded itself so I had literally thousands of tiny seedlings sprouting in the bed around it, even into other beds … Deeply cut light green leaves display attractive red margins that turn golden in fall. Scorch symptoms are light brown or tan dead areas between leaf veins or around the leaf margins. Attractive branching silhouettes and interesting leaf shapes and colors make Japanese maples among the most widely planted, small, ornamental trees in the Untied States. Deciduous. mauricetown, nj. Many of times I have had a Japanese maple decline no matter what care I have given them. Can anyone advise on good, vase-shaped ornamental maple candidates … I had a coral bark Japanese maple planted in a large container on my back patio for about two years. As they fall, they expose the bright, coral red bark … Leaf Scorch: On maple (Acer species) trees a number of problems cause symptoms that are generally classified as leaf scorch. Many times a plants health is beyond our control and hard to determine why some don't make it. Two species are referred to as Japanese maples: Acer palmatum and A. japonicum. Perhaps they don't like damp winters? This spring it didn’t come back so I pulled it out and planted a “Red Select” Japanese maple in the same pot. The latter is often also called fullmoon maple. It has some really strange die back happening. This takes a bit of time, since the bark doesn't grow that quickly, but if you maintain the healing process, you should see an improvement within a year. Many in hotter climates get sunburn and summer die back with Sango Kaku even though it is typically listed as a "full sun" tree. I have a Coral Bark Japanese Maple which I planted about eight years ago and is thriving beautifully. Japanese maple trees, when damaged, are susceptible to mold, fungus and boring insects. Occasionally the leaf margins are yellow or chlorotic. We like the look of Coral Bark and some similar maples but were told that Coral Bark Maples typically last only 5-10 years in our area, and we didn't want to invest in a tree and have to replace it in 5-10 years. one is doing fine, the other has branches turning black and now the trunk is turning black. 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