I dunno?
The needles grow in pairs, are blue-green in colour and about 5 cm. (2 inches) in length. They normally remain on the trees for 2-3 years, with the old needles turning yellow in September or October before they are shed. Drops of sticky resin often cover the tree's buds, and also provide a natural preservative for the wood: if a Scots pine dies while it is still standing, the skeleton can persist for 50 or even 100 years before falling down, because the high resin content in the sap makes the wood very slow to decay.
Scots pine is unusual amongst conifers in having a number of different mature growth forms, ranging from tall and straight-trunked with few side branches, to broad, spreading trees with multiple trunks. Eleven different growth forms, or habit types, have been identified for Scots pine in Scotland, and many of these can easily be seen in the pinewood remnants. Young Scots pines display the characteristically conical shape of conifers, but as the trees mature, this gives way to the flat- or round-topped shapes which are typical of the pines in the ancient Caledonian Forest remnants.
In good situations on mainland Europe, Scots pine can grow to 36 metres (120 feet) in height, but in most of the pinewood remnants in Scotland today the largest trees are about 20 metres (65 feet) tall, with exceptional trees recorded up to 27 metres (90 feet). Maximum girth at breast height is usually up to 2.4 metres (8 feet), although some trees up to 3.6 metres (12 feet) have been recorded