Two Japanese Maple Rootings Not Growing
Around last fall, a friend of mine gave me two Japanese Maple rootings from his JM.
Neither JM has formed any new growth except for a few leaves that one rooting formed in May. These leaves are in the middle of the stem. The other rooting is bare. One rooting is about 6 inches tall, and the other is about 3 or 4 inches.
What do JM rootings need to grow properly? Apparently, I have not been caring for them correctly. I have kept them in a big pot because I wasn't sure if I should plant them yet. At first, I left them alone in the soil they came in for awhile which seemed to be it's native soil. When I saw they weren't growing, I mixed a little bit of dehydrated manure fertilizer and potting mix into the soil hoping that it would help them, but it seems to have harmed them instead of helped.
I've made searches online for how to care for JM rootings, but have not been able to find much information. What should I do to make them healthy again and encourage new growth?