I am trying for six months now to raise Amur and Bloodgood from seeds. After I succeeded to sprout them and having planted them to small pots , they show to have some kind of disease. Anyone that can understand from the pictures what is going wrong, I'd appreciate their help as I am losing all the sprouted plants. My zone is 9a/9b and during this past 30 days the temperature here is 90-100 degrees. I am watering the plants daily. Left image is the Bloogood, right is the Amur Maple. Thanks Kiriakos
Probably suffering from heat and low humidity. Try to keep them somewhere cooler and shadier, around 20-25 degrees.
And be careful about overwatering. The picture of the Amur looks like many of the trees around here, from various species and genera, after the very humid summer we've been having. I assume it is some kind of leaf fungus. Usually the trees seem to survive this kind of thing well, though of course they lose some vigor because of all that leaf damage. I try to remove the fallen leaves to another part of the yard (burning them would probably be better) so the fungus doesn't have a sanctuary for winter.
