This week’s plant, the snow crocus or woodland crocus (Crocus tommasinianus) is one of the earliest-flowering crocuses, with pale lavender blue flowers whose outer petals are silver-grey. It grows very happily in grass or in borders, forming lovely naturalised clumps and spreading gently by seed. The snow crocus prefers full sun during the early season and well-drained soils. Native to Bulgaria, Hungary, and Albania, it is named after the Italian botanist Munzio de Tommasini (1794–1879). In the Parks you can see it in the Thorn Walk.