Creeping Jacob's Ladder (Polemonium reptans)

Creeping Jacob's Ladder

Polemonium reptans

Delicate blue blooms cascade like a gentle ladder. Herbaceous perennial; common name: Creeping Jacob's Ladder.

Partial sun
2–3/week
Beginner
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Plant Needs

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Sunlight Prefers dappled partial shade to full shade; tolerates gentle morning sun but avoid harsh midday direct sunlight
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Watering Keep soil consistently moist but not waterlogged; avoid allowing the root zone to dry out completely
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Temperature Hardy to cold temperatures down to -30°C; thrives in mild summer heat below 27°C
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Characteristics

  • Leaf: Compound pinnate leaves with 5–13 oval leaflets, arranged in ladder-like opposite pairs.
  • Flower: Clusters of bell-shaped, pale blue to lavender blooms on upright, slender stems.
  • Stem: Soft, hairy trailing or upright stems that spread slowly via underground rhizomes.
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Care Guide

Watering

Keep soil evenly moist; apply mulch to reduce evaporation

Fertilization

Apply diluted balanced liquid feed once monthly. Use a low-nitrogen fertilizer to prioritize bloom production over foliage growth

Composted banana peel tea:Fully compost banana peels for 2–3 weeks, steep in water for 24 hours, dilute 1:20 for root drench; avoid raw peels to prevent pest infestations
Pruning
  • Deadhead spent bloom clusters to encourage occasional late-season reblooming
  • Trim back faded foliage in late summer to promote fresh, compact growth
  • Divide overcrowded rhizome clumps in early spring to maintain plant vigor
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-confirmed non-toxic to cats

Humans: No known toxic effects on humans

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental ground cover for shaded gardens; attracts native bees and butterflies