The open plant encyclopedia
Snap a photo or search by any name to see how to care for it, where it comes from, whether it's safe, and a 3D model you can turn.
The plants people record most in your country, and ones that grow there wild.
Filter by what you want to do, shape, origin, country, care and safety.
Polemonium boreale
Also called Boreal Jacob's Ladder, Boreal Jacobs Ladder
Polemonium boreale, the northern Jacob's-ladder or boreal Jacobs-ladder, is a plant native to most of the high arctic. In Greenland it is found only in a small area on the east coast. It is not very common.
The whole plant is pubescent, with long woolly hairs, glandular, and grows to 5–10 cm tall. The basal leaves are more or less alternate, and pinnate, with numerous leaflets. The flowers are produced in a more or less capitate inflorescence, each flower bell-shaped, blue, 15 mm long, 2.5 times longer than the calyx. The plant has a very unpleasant smell, and grows on gravelly slopes and in crevices.
Tall Jacob's-ladder · Brandegee's Jacob's-ladder · Jacob's Ladder · Moving polemonium · Royal Jacob's-ladder · Mason's Jacob's-ladder · Rocky Mountain Jacob's-ladder · Mount Eddy Jacob's-ladder · Elegant Jacob's-ladder · Skypilot · Towering Jacob's-ladder · Annual polemonium
Text excerpted from the Wikipedia article Polemonium boreale by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
