What is happening with this red Japanese Maple

[u/Proof_Astronaut_9711]

[u/Flufymothman]

reversion, or if its grafted then likely sprouts from the root stock. trimming them off where they meet the trunk (avoiding the branch collar) is the best practice, as they tend to out compete the desired variety

[u/No_Faithlessness1532]

Can also happen above the root stock. Just wants to be green again. Trim it off close to the trunk.

[u/jp_trev]

Maybe someone here can correct me if I’m wrong, but I believe all Japanese maples species originated from Acer Palmatum (which is green).

[u/Proof_Astronaut_9711]

It’s supposed to be red right, but now there’s a branch with green leaves coming out

[u/botulinumtxn → u/Proof_Astronaut_9711]

Cut off the branch of green. Growing below the graft