Just wanted to share that the propagation of hydrangeas worked just using the dig a hole, stick the branch in, bury it and put a brick to keep it down method. Very easy way to multiply your shrubs, plants without paying for more. The one I'm really surprised are the paniculatas as the only YouTube videos out there for propagation are the mop heads or big leafs.
For example here you see the Vanilla Strawberry hydrangea that's white in the middle
Here I removed the brick and you can clearly see the roots developing
More examples from the Limelights hydrangeas