Hello and welcome!

You've struck gold with Al's posts on container soils and water movement.
The Threads on Trees in Containers, too.

I just looked up the Albizia - which is what we call "Mimosa," though I know
the name isn't botanically correct. Yes, it can be a large tree, but I'm sure you
can control it if you take the proper steps.

If the tree is small to start, I would grow it in the 5-1-1 mix, and then move it into
the Gritty Mix once it gains some size and permanancy. However, root-pruning will be
necessary to maintain the tree's vitality in the container.

I use plastic bonsai screens for the drainage holes in my containers.
Many other materials will work.

Josh

Hi Josh and thanks for you answer

I moved the question to the 'Trees in Containers III' thread where Al answered that and other questions that might be of intrest to you as well thanks again for th help

Thanks, and you're welcome!

Al is a mentor of mine, indeed, and I've taken my growing to the next level by following
the principles he's outlined in his excellent Threads.

Josh