Polemonium viscosum 'Blue Whirl'
Height: 50-60 cm
Flower colour: blue-violet
Flowering time: July - August
Sunlight: sun - part shade
Soil: humus rich, well drained, moist
pH: acid - neutral - alkaline
Hardiness: little experience
Plant range: 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.