Polemonium
Polemonium caeruleum
flowerPolemonium caeruleum, commonly known as Jacob's ladder, is a charming cottage garden perennial with soft blue or occasionally white flowers and distinctive ladder-like compound foliage. It typically blooms in late spring to early summer and self-seeds readily, creating naturalized drifts in borders and woodland settings. The plant is easy to grow and supports pollinators.
Common Problems
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Care Guide
Toxicity
Non-toxic to humans and pets
Common Diseases
Common Pests
Seasonal Care
Resume regular watering and feeding as growth picks up.
Peak growing season. Water and feed regularly.
Reduce watering as growth slows. Stop heavy feeding.
Minimal watering and feeding. Protect from frost if needed.
Similar Plants
Frequently Asked Questions
Why is Polemonium called Jacob's Ladder?
Its distinctive compound foliage is made up of leaflets arranged in rows along the stem, resembling the rungs of a ladder, which gives this cottage garden perennial its common name.
Does Jacob's Ladder spread on its own?
Yes — it self-seeds readily, often creating naturalized drifts in borders and woodland settings over time without any extra effort from the gardener.