Douglas-fir may prove to be a productive alternative to Sitka spruce for the UK’s commercial forestry sector. That is one of the early conclusions from ongoing research to test the suitability of 17 tree species as potential options for future timber production. Taking place across a network of nine large-scale experiments (in locations such as the Newcastleton, Cowal, and the Black Isle), the Forest Research-led investigation also found Douglas fir had the promise for further use in the south and east of the country, where the climate is forecast to become significantly hotter and drier than today. While already considered by many as a serious option, the species only makes up around 4 per cent of the UK’s total commercial forest.