Alphabetical Plant Listing

Polemonium boreale (Northern Jacob's Ladder)

Northern Jacob's Ladder, Arctic Jacob's Ladder


Extremely cold-hardy, Polemonium boreale (Northern Jacob's Ladder) is a compact perennial with creeping underground stems forming a low, bushy mound of alternate, basal green leaves with very short petioles. The pinnately compound leaves, each adorned with 13-23 leaflets, are covered with long woolly hairs. In late spring to early summer, it is smothered with a profusion of unpleasantly scented, small sky blue flowers, adorned with a yellow eye and white stamens. They are highly adapted to insect pollination. Excellent for rock gardens or in the front of borders.

  • Grows up to 12 in. tall and wide (30 cm).
  • Thrives in average, medium, well-drained soils in sun or part shade. Prefers a cool, moist soil with protection from the hot sun. Intolerant of high heat and humidity.
  • Generally pest free. Keep an eye out for powdery mildews.
  • Deadhead regularly. If becoming untidy, cut back by half in midsummer to rejuvenate.
  • Native to most of the high arctic.

Not sure which Polemonium - Jacob's Ladders to pick?
Compare All Polemonium - Jacob's Ladders

Buy Polemonium boreale (Northern Jacob's Ladder)

Requirements

Hardiness 2 – 7
Plant Type Perennials
Plant Family Polemonium - Jacob's Ladders
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)
Summer (Early)
Height 10" – 1' (25cm – 30cm)
Spread 10" – 1' (25cm – 30cm)
Water Needs Average
Maintenance Average
Soil Type Clay, Loam, Sand
Soil pH Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Fragrant, Showy
Native Plants United States, Alaska
Attracts Butterflies
Garden Uses Beds and Borders, Patio and Containers
Garden Styles Gravel and Rock Garden

Buy Plants

Great Plant Combination Ideas with Polemonium - Jacob's Ladders

Guides with Polemonium - Jacob's Ladders


Nick Pecker, Shutterstock

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 2 – 7
Plant Type Perennials
Plant Family Polemonium - Jacob's Ladders
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)
Summer (Early)
Height 10" – 1' (25cm – 30cm)
Spread 10" – 1' (25cm – 30cm)
Water Needs Average
Maintenance Average
Soil Type Clay, Loam, Sand
Soil pH Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Fragrant, Showy
Native Plants United States, Alaska
Attracts Butterflies
Garden Uses Beds and Borders, Patio and Containers
Garden Styles Gravel and Rock Garden

Great Plant Combination Ideas with Polemonium - Jacob's Ladders

Guides with Polemonium - Jacob's Ladders

Plant Calculator

How many Polemonium boreale (Northern Jacob's Ladder) do I need for my garden?

%
ft
ft

Your Shopping List

Plant Quantity
Polemonium boreale (Northern Jacob's Ladder)

Find your Hardiness Zone

Find your Climate Zone

Find your Heat Zone

Join Gardenia.net

Create a membership account to save your garden designs and to view them on any device.

Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.

Join now and start creating your dream garden!

Create a New Collection

Optional. For your reference.


Move Selected Plants to a Different Collection


Delete Collection

This field is required.