Jamie to answer an Hokkeido will be 20 plus years at about two thirds the size that Ken has.
My minis of Hokkeido are 23 years old. They have always been in Bonsai pots though. When I strike cuttings I keep them for about 1 year in a nursery pot 6cm or tubes then move them on.
It is just the bark I have is not corky like Ken's either. As has been said it is a cultivar bred by Ray.
The reason I ask of the leaves is I have had this discussion with a nursery man here who tells me mine are Seiju with small leaves.
Seiju are opposite where as Hokkeido are alternate.
Both are small, although the Hokkeido will come down to less than 2mm.
Which is Ideal for Mame and Shito which are the two smallest sizes.
Mine were imported from Japan in 1986 when we could still import elms. It was imported as a Nire geyaki a type of Japanese elm.
To quote Classic Bonsai of Japan plate 162, Nire-geyaki a type of Japanese elm ( Ulmus parvifolia ) This specie's is suited to the miniature Bonsai; small leaves are a natural advantage, and dwarf varieties are often used. When cut back, the Nire geyaki often puts out shoots on the trunk, and is easy to make dense growth of small branches. The surface, too easily acquires an old, and roughened look. Replanting in a smaller pot would enhance this specimen's sense of scale. This last sentence I believe is meant for the one in the book.
I hope this helps you
Cheers Pup
