On Sat, 20 Mar 2004 14:08:45 +1100, (Martin) wrote:

Hi,
There might be some hobby grafters out there. My question is about the
understock. At the moment I have ~50 one and two year old maples growing
I started off from seed.Do they develop a larger stem (which of course I
need for grafting) with any attention like stem or leaf pruning?

Yes, they will thicken up on their own. It will take a while, though.