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Jacob's Ladder, Few-flowered Jacob's Ladder
Polemonium pauciflorum 'Silver Leaf Form'

Family: Polemoniaceae (po-le-moh-nee-AY-see-ee) (Info)
Genus: Polemonium (po-le-MOH-nee-um) (Info)
Species: pauciflorum (PAW-ki-flor-um) (Info)
Cultivar: Silver Leaf Form




12-18 in. (30-45 cm)


18-24 in. (45-60 cm)


USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Sun to Partial Shade


Unknown - Tell us

Bloom Color:

Pale Yellow

Bloom Time:

Mid Summer

Late Summer/Early Fall

Mid Fall

Late Fall/Early Winter



Other details:

Average Water Needs; Water regularly; do not overwater

Soil pH requirements:

Unknown - Tell us

Patent Information:

Unknown - Tell us

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us


This plant has been said to grow in the following regions:

Alameda, California

Puyallup, Washington

Gardeners' Notes:


On Oct 3, 2004, echoes from South of Winnipeg, MB (Zone 3a) wrote:

This plant doesn't seem to be hardy in my climate, and so far I have to save seeds and start each spring. It certainly is not invasive. As it doesn't spread from the root and is not a prolific seed spreader, I don't see it being any more invasive than other plants that seed themselves. Could be spread around by the birds and little critters.


On Oct 14, 2003, wnstarr from Puyallup, WA (Zone 5a) wrote:

This plant is terribly invasive. I planted it in my flower bed and in two years it had spread to cover an area of 15-20 feet. Would strongly advise to NOT plant this plant. Have seen area's were it has spread throughout pastures and roadsides. It is on my list of worst 10 plants ever introduced as a garden plant.