My magnolia started waking up after winter then stopped growing and dried up a bit. It then re-started growing some weeks ago, fresh foliage and a couple of blooms appeared but no more. Any ideas what has gone wrong?
It sounds like your Magnolia was touched by a frost or the cold weather killed off the buds.
The good news is that your tree is actively growing.
If you have some branches or stems that have died, you can prune those from the tree.