Polemonium viscosum 'Blue Whirl'
50 - 60 cm
July - August
sun - part shade
humus rich, well drained, moist
acid - neutral - alkaline
garden variety, the species is native to western N-America
Polemonium is a genus in the Polemoniaceae family. All species are native to temperate regions in the northern hemisphere, except one species that grows in the southern Andes.
Division in spring.
Seed - sown in February - March.
Seed just covered and stored at 20°C (68°F) until germination, which can be slow.
A tall perennial with violet-blue flowers, very similar to P. caeruleum.