Pin Oak Trees
The Pin Oak tree, Quercus palustris, is a is a big, elegant tree with a relatively narrow canopy and thinner branches than our native oaks. The branches droop at the tips and sway in a light breeze. The autumn leaves are a rich, ruddy orange-russet colour, with a hint of hot bronze. Pin Oak thrives on damp, oxygen starved soils found in marshes and beside rivers or lakes with heavy clay banks and so it is tolerant of damp soils that flood in winter . This also makes Quercus palustris a good inner city tree, where the soil is usually very compacted and covered in concrete and tarmac. Untrimmed, it can reach a height of about 25 metres.
History & uses of Quercus palustris: Pin Oak is a North American tree that was introduced to Britain in 1800. There are records of Pin Oaks in the USA that have reached a whopping 60+ metres tall; there are no Pin Oaks that big in Britain and they aren't as vigorous in our relatively cold climate where they reach less than half that height. Pin Oaks have short lives for an Oak, up to about 200 years old. The timber is too knotty to have many uses, but it is good firewood.
How Standard Trees are Measured:
All the plants in the ornamental trees section are graded as standards, which means that they are measured by their girth in centimetres 1 metre above ground level (basically, their trunk's waist measurement). They aren't measured by their height, which will vary. So, a 6/8 standard has a trunk with a circumference of 6-8 centimetres and an 8/10 standard has a trunk 8-10 centimetres around. This measurement makes no difference to the tree's final height.
Pin oak standard trees are 2.5 - 4 metres tall (on average) when they arrive.