As autumn approaches, the mighty oak takes on its new seasonal colours. As the sap subsides, these iconic trees put on a fine show. The exhausted summer greens turn to buttery yellows, burnished with gold. Finally, only the brown, crisped memories of the past year’s leaves still cling to the mother tree. From its acorns nestled in their cross-hatched cups, to the distinctive lobed leaves and the bold, billowing form of its mighty frame, the oak is one of the most recognisable of British trees.