Help rooting blueberry cuttings
I have a few varieties of blueberries that I've been trying to propagate by rooting cuttings. I initially tried putting them in a plastic bag with a damp paper towel. I waited weeks and nothing happened.
Now I'm trying in a nursery flat with a clear lid. I'm using a mix of 50% perlite, 50% vermiculite. I just tried a batch of above 25 cuttings or so and they show more progress than the plastic bags, but eventually die off. It seems that most of the cuttings (which are from dormant plants) start budding. Some even grow a small amount of new green wood and small leaves on them. I keep the lid on to retain humidity, but I open it daily to let in new air.
Most of them seem to look really good for about 3 weeks or so. Then the small leaves start turning dark brown and eventually all the cuttings just start to die off rapidly.
This has happened to me multiple batches of cuttings and I don't know why. Anyone have any idea what I might be doing wrong here?