2022Estonian Forest Threes - The Curly Birch - First Day Cover

The curly birch is a variant of the silver birch with a peculiar wood texture. It is extremely variable in terms of growth form: it may stand at a medium height or, more often, be a stocky, short tree with a curved or straight trunk and a crown reminiscent of an apple tree. Sometimes, it might also occur as a shrub or shrub-like tree. A particular characteristic feature is the appearance of knot-like thickenings or lumps of various shapes on the curly birch’s trunk. The leaves, fruits, and shoots are similar to those of the silver birch. The curly birch is slow-growing, light-loving, and undemanding in terms of soil fertility.