Jacobs Ladder, 'Blue Pearl'

(Polemonium caeruleum) Jacob’s ladder earns its common name from the tidy and regular 90-degree placements of the many narrow leaflets on the compound leaves, giving the appearance of a structure very conducive for climbing if one were the proper height. Also known as Greek valerian, it starts as a rosette of lush ferny foliage eventually stretching to about 30” topped with clusters of lovely sky-blue 1” blooms featuring bright yellow contrasting anthers. Perennial, it thrives in dappled sunlight/part shade and moist well-draining ground. At our farm its is one of the first to bloom, providing an early venue of enthusiasm for the grateful neighborhood pollinators.
Perennial. Blooms first year. Rabbit and Deer resistant. Cut back to encourage the second flush of blooms. UO

Packet: 100 seeds

Product Code: JAC-BP-pkt

Availability:In stock

Translation missing: en.products.general.options Translation missing: en.products.general.qty Translation missing: en.products.general.qty



Growing Info


Sow indoors 6-8 weeks before your last frost.

Transplant after last frost.

Direct seed after last frost.

Note: Blooms first year and blooms heavily! Cut back to encourage second set of blooms and to discourage self-seeding. 


Lightly cover


12-18" in rows 15-18" apart.


20-30 days @ soil temp 70F


Part shade and will tolerate full shade.


Average. Prefers well-drained, and evenly moist soil. Dislikes high heat and humidity.


While not absolutely necessary, you may provide support to keep them upright and tidy.

Rabbit and deer resistant.

Butterfly and bee attractor!

Cut in the cool of the day when flowers are 1/3 open and expect a vase life of 5-7 days.