Cryptomeria Japonica - Japanese Cedar
A columnar or cylindrical coniferous tree native to Japan, The Japanese Cedar can grow up to 25 meters in height and a spread of around 6 meters. A classic tree to use as a Bonsai subject, many forms can be grown.
(As an extra note these are not Bonsai seeds, which do not exist. Trees can be grown as bonsai. Google growing bonsai for more information.)
Fully hardy in the UK to -15°C