Our native Rocky Mountain Lodgepole pine (P. contorta latifolia), makes a great bonsai. These have naturally short, light green needles closely resembling Japanese Red Pine. They have flaky bark and rugged character from life high in the mountains. These trees require extended periods of cold for winter dormancy.
More info on Lodgepole Pines: http://www.conifers.org/pi/Pinus_contorta_latifolia.php
Please inquire for prices and shipping quotes: firstname.lastname@example.org or 307-359-2063
Good lodgepole pines like this are hard to come by! We find perfectly straight ones all the time (hence the name "lodgepole," even in areas that experience extreme conditions where limber and ponderosa pines will have insane contortions. So a short heavy trunk with deadwood and movement equates to a very valuable and rare Rocky Mountain Lodgepole.
This one will make a great little clump style bonsai. It's small but still has great bark and deadwood on the older trunks.
If you like Shohin or even Mame (really small!) this one will do the trick. Quite old and flaky bark for such a small tree!