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European larch (EL)

European larch has been widely planted in Britain but not to any great extent with Japanese and hybrid larch preferred. There are two recognised varieties: L. decidua var. carpatica (Carpathian Mountains) and L. decidua var. polonica (hills on the Polish plains). The latter is listed as endangered by the IUCN. This species has the potential for future expansion on the right sites, but its current position is unlikely to alter with projected climate change. However its use now and in the future is under review with the continuing impacts of the disease Phytophthora ramorum affecting planting potential in much of Britain. European larch is categorised as a principal tree species. These are tree species where silvicultural knowledge provides confidence to enable successful deployment across Britain. The species are either already widely used or are increasing in usage. They will continue to be important unless affected by a new pest or disease or become adversely affected by climate change.

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Expanding Agroforestry: A Tree Species Guide for Agroforestry in the UK

This ‘Tree Species Guide for UK Agroforestry Systems’ provides an overview of 33 species of trees and shrubs that could be planted in UK agroforestry systems.

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Phytophthora ramorum and the future for larch in Wales

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Steph Wood

Lenga (NPU)

Lenga is a temperate species growing on a wide variety of sites from sea level to 2000 m. It is one of several southern beeches growing in South America and is the second most abundant tree species in Chile and Argentina; it is largely underutilised. The wood is quite versatile and easy to process and could be a substitute for maple and cherry. Little is planted in Britain, but Lenga could find a niche in the right sites to assist with forest diversification. Lenga is categorised as a plot-stage species.  These are species that have demonstrated some positive silvicultural characteristics at the Specimen-stage and are now subject to further testing and development in a limited number of trial plots.

Roble (RON)

Nothofagus is a southern hemisphere genus in the Fagaceae family and relatively close taxonomically to our native beech. Roble, and its sister species Rauli (N. alpina), were introduced early in the 20th Century and widely planted as individuals and in small plots as a promising exotic broadleaved tree. It is currently cold limited in Britain, but this species may benefit from climate warming and be suited to a wider range of sites in northern Britain, wherever its site requirements are met. Roble is categorised as a Secondary tree species.  These are species that have demonstrated positive silvicultural characteristics in trial plots, but gaps in our knowledge constrain their wider use. These species are being actively evaluated to increase understanding and inform future deployment.

Rauli (RAN)

Nothofagus is a southern hemisphere genus in the Fagaceae family and relatively close taxonomically to our native beech though with a lighter timber. Rauli, and its sister species Roble, were introduced early in the 20th Century and widely planted as individuals and in small plots as a promising fast growing exotic broadleaved tree. Since it is currently cold limited in Britain, this species may benefit from climate warming and be suited to a wider range of sites in northern Britain, wherever its site requirements are met. Rauli is categorised as a secondary tree species.  These are species that have demonstrated positive silvicultural characteristics in trial plots, but gaps in our knowledge constrain their wider use. These species are being actively evaluated to increase understanding and inform future deployment.