British oak (Quercus robur) is one of the UK’s most iconic native trees, known for its broad spreading branches and lobed leaves. It supports huge biodiversity and has long been valued for its strength, longevity, and cultural symbolism.

For natural dyeing in autumn and winter, oak is especially useful because it’s rich in tannins:

• Leaves (especially fallen autumn leaves): Give soft yellows, warm browns, and muted golds.

• Twigs and small branches: Yield stronger browns and greys, particularly when simmered for a long time.

• Bark (fallen or responsibly collected only): Very high in tannins, producing deep browns, taupes, and greys. It can also act as a natural mordant, helping dyes fix to fibres.

Oak dyes work beautifully on wool and other animal fibres and are ideal for winter dyeing because the materials are easy to gather from the ground and can be used fresh or dried.