These are hardy varieties of trees which are kept outdoor in their natural environment.
Outdoor bonsai will thrive in the seasonal changes and must never be kept indoors.
They require winter protection in severe weather by placing in a frost free, unheated greenhouse or garage.
Mame - High quality minature bonsai known as mame (pronounced "ma-mey") are trees up to 15.25cm (6in).
Shohin - High quality small bonsai known as shohin (pronounced "sho-hin") are trees from 15.25cm (6in) up to 30.5cm (12in).
Raw Material - Mature material suitable for training and development as beautiful bonsai.
Specimen Trees - High quality mature bonsai.
Starter Trees - Young material suitable for training and development as bonsai.
(M) SMALL-LEAVED HONEYSUCKLE (Lonicera microphylla)
(N) ENGLISH YEW (Taxus baccata)
(O) FIRETHORNE (Pyracantha angustifolia)
(P) ENGLISH OAK (Quercus robur)
(ZH) CHINESE JUNIPER (Juniperus chinensis)