There are different types of Anemone; 'nemorosa' and 'blanda' are spring flowering, while 'coronaria' is spring or summer flowering depending on when you plant them.
'Nemorosa' (the wood anemone) prefers a damp, shady spot or woodland planting. 'Blanda' like light shade and well-draining soil. These types can be planted in September and October for flowers the following spring. Plant 'Coronia' in a sandy, free-draining soil in a full sun position during spring for flowers in summer or plant in early summer for flowers in autumn, or you can even plant in autumn for flowers the following spring.