Iconic in Scotland’s Caledonian pinewoods. Once prized for shipbuilding timber, especially masts, the misshapen trees left behind, the ‘granny’ pines, are now valued in semi-wild landscapes and for supporting rare wildlife.

Scots Pine has the widest natural range of any conifer, growing across Britain and Ireland, through Scandinavia to Siberia, south to the Mediterranean and east into China. Present in Britain from 8,500 years ago. Scotland’s Caledonian Pinewood Inventory lists 84 sites over 18,000ha, varying from tiny degraded fragments to healthier stands. Conservation aims to regenerate natural forest where it is a keystone species with Downy Birch, Common Juniper and Rowan.

A pioneer, highly effective at colonising bare ground. One of only three conifers native to Britain and Ireland, with Common Juniper and European Yew. Monoecious, producing male and female cones on the same tree in early summer from about 20 years old.

Bark red-grey, brighter red higher up the stem and along branches. Needles blue-green, in pairs, to 7cm and commonly twisted; terminal bud long and blunt. Female cones become 5-8cm and woody, with sharply prickled scales. Corsican Pine differs: dark bark, long grey-green needles, terminal bud broad with a sudden point.

Easy to grow from seed but liked by browsing mammals. It dislikes wet, boggy ground, where it stays stunted, and is highly drought-tolerant. Fertile sites give rapid growth but poor timber form. On a good site it reaches 35m and partners broadleaves well, but open-grown trees are rounder, more branched and shorter. For quality timber, pruning the whorled branches is advised.

A key species of Scotland’s native pinewoods, feeding and sheltering threatened wildlife including European Wildcat (Felis silvestris), Pine Marten (Martes martes), crossbills and Capercaillie (Tetrao urogallus). Also found on wildlife-rich lowland heaths. Heavily branched ‘granny’ pines, though relics of past selective felling for timber, are now iconic and valuable for wildlife and tourism.

Browsing remains a significant threat to Caledonian pinewoods. Generally healthy, though climate change may aid new pests and pathogens. A future concern is Pine Processionary moth (Thaumetopoea pityocampa), a defoliating insect gaining ground in mainland Europe.

A quality softwood, pale yellow to pink, fresh-scented and lightweight, finishing well and popular for furniture and joinery. In the trade it is sometimes called red deal or redwood, confusingly, as it is no redwood. Once used for pit props and waterwheels and, most notably, ship masts, causing deforestation and negative selection in native European stands during the age of wooden shipbuilding.