species 2,779 observations
Leafy Jacob's Ladder
Polemonium foliosissimum
Field notes
Polemonium foliosissimum, the towering Jacob's-ladder, is a rare species of flowering plant in the phlox family Polemoniaceae, native to the western United States; Arizona, Colorado, New Mexico, and Utah. As its synonym Polemonium archibaldiae it has gained the Royal Horticultural Society's Award of Garden Merit.
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Range
Greener is more native, amber more introduced; paler is less certain. How this was decided
Key traits
- Layer
- Herbaceous plants
- Light
- Part shade
- Moisture
- Moist
- Plant type
- Perennial Wildflower
From USDA PLANTS and the Lady Bird Johnson Wildflower Center.


