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PlantFiles: Leafy Polemonium, Jacob's Ladder
Polemonium foliosissimum

 
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Family: Polemoniaceae (po-le-moh-nee-AY-see-ee) (Info)
Genus: Polemonium (po-le-MOH-nee-um) (Info)
Species: foliosissimum (foh-lee-oh-SIS-ee-mum) (Info)

One vendor has this plant for sale.

Category:
Perennials

Height:
24-36 in. (60-90 cm)

Spacing:
18-24 in. (45-60 cm)

Hardiness:
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
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)

Sun Exposure:
Unknown - Tell us

Danger:
Unknown - Tell us

Bloom Color:
Light Blue
Violet/Lavender
White/Near White
Cream/Tan

Bloom Time:
Mid Summer

Foliage:
Unknown - Tell us

Other details:
Unknown - Tell us

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

Profile:

No positives
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorComment
Neutral eyesoftexas On Aug 10, 2001, eyesoftexas from Toadsuck, TX (Zone 7a) wrote:

A hardy herbaceous perennial native to the Western U.S., leaf polemonium has stiff, upright stems bearing leaves formed of narrow dark green leaflets. From early to late summer, it bears 1/2 inch wide mauve-blue flowers in clustered heads. The handsome flowers are highlighted by orange-yellow stamens. The better known Polemonium caeruleum, Jacob's Ladder, is a short-lived, less dramatic species.

Cultivation: Rich, deep, loamy soil in partial shade, does not tolerant heat and humidity. These plants soon exhaust the soil, which will need annual mulching or feeding with fertilizer.

Propagation: Lift and divide in autumn or spring.

Regional...

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

Santaquin, Utah



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