Pulsatilla vulgaris is a violet-blue-flowered pasque flower that is native to Europe (Great Britain and France to the Ukraine).
Hairy flower stems emerge from the ground in spring or sometimes when patches of snow are still on the ground. Flowers bloom as the foliage begins to form. Flowers are solitary, erect-to-nodding and open-bell-shaped. When the flowers appear, stems are typically only 10-15 cm tall.
Stems elongate and foliage grows taller after bloom (up to 25 cm). Flowers are followed by equally-ornamental, plume-like seedheads (reminiscent of some clematis) in fluffy spherical clusters. Deeply-divided, silky, hairy, fern-like, light green, basal leaves are attractive throughout the growing season.
Best grown in fertile, humusy, gritty, medium moisture, well-drained soils in full sun to light shade. Good soil drainage is essential. Best performance occurs in cool climates where plants are also more apt to tolerate drier conditions. Plants need consistent moisture in hot summer climates such as the St. Louis area. Plants are best left undisturbed once established.
Pulsatilla vulgaris is synonymous with Anemone pulsatilla.
Genus name comes from Latin meaning sway as the flowers sway in the wind. Pasque comes from Old French for Easter in reference to the spring bloom time.
Info source: http://www.missouribotanicalgarden.org

Genus - Pulsatilla
Species - Vulgaris
Variety - Violet-blue
Common name - Pasque Flower
Pre-Treatment - Not-required
Hardiness zones - 4 - 8
Height - 0,15 - 0,20 m
Plant type - Perennial Herb
Exposure - Full Sun, partial shade
Growth rate - Medium
Soil PH - Acid, neutral, alkaline
Soil type - Fertile, humusy, gritty
Water requirements - Average
Landscape uses - Border fronts, rock gardens
Bloom season - April to June
Leaf / Flower color - Green / Violet - blue

GERMINATION INSTRUCTIONS
Sow February to April inside or outside.
Sow on the surface of moist seed compost in pots or trays. Cover the seed lightly with vermiculite. Keep in light position as light helps germination.
Best temperature for germination - +15-20C.
Keep the surface of the compost moist.
The seed usually germinates in about 2 - 3 weeks, sometimes it takes longer - up to 90 days.