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Polemonium pulcherrimum (Jacob's ladder)

Beginner
skill rating
1 hour care
per year
0.45m
Max height
0.5m
Max spread
2-5 years
To maturity

Plant details

Botanical name

Polemonium pulcherrimum

Other names

Jacob's ladder

Genus

Polemonium Polemonium

Species

P. pulcherrimum - P. pulcherrimum is a clump-forming herbaceous perennial, covered with small, usually blue flowers, but white in some forms. Polemonium pulcherrimum has the largest flowers of all Jacob's ladder-type polemoniums.


Polemonium pulcherrimum is: Deciduous

Habit

Clump-forming, Mat Forming

Awards

RHS AGM (Award of Garden Merit)

Flower

Lilac in Summer

Foliage

Green in Summer

How to care

Watch out for

Powdery mildew Powdery mildew

General care

Pruning

Cut back to the base in autumn.

Propagation methods

Division


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Where to grow

Polemonium pulcherrimum (Jacob's ladder) will reach a height of 0.45m and a spread of 0.5m after 2-5 years.

Suggested uses

Beds and borders, Cottage/Informal, Rock, Wildflower, Wildlife, Woodland

Cultivation

Best planted in well-drained soil in full sun with some midday shade.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

South, East, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

Companion plants

We do not currently have companion plants added for this plant.

Botanical name

Polemonium pulcherrimum

Other names

Jacob's ladder

Genus

Polemonium Polemonium

Species

P. pulcherrimum - P. pulcherrimum is a clump-forming herbaceous perennial, covered with small, usually blue flowers, but white in some forms. Polemonium pulcherrimum has the largest flowers of all Jacob's ladder-type polemoniums.

Foliage

Deciduous

Habit

Clump-forming, Mat Forming

Awards

RHS AGM (Award of Garden Merit)


Colour

Flower

Lilac in Summer

Foliage

Green in Summer


How to care

Watch out for

Specific diseases

Powdery mildew

General care

Pruning

Cut back to the base in autumn.

Propagation methods

Division


Monthly care advice


Where to grow

Polemonium pulcherrimum (Jacob's ladder) will reach a height of 0.45m and a spread of 0.5m after 2-5 years.

Suggested uses

Beds and borders, Cottage/Informal, Rock, Wildflower, Wildlife, Woodland

Cultivation

Best planted in well-drained soil in full sun with some midday shade.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

South, East, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 9, Zone 8, Zone 7, Zone 6

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This plant likes... Garden match
Soil types: Chalky, Clay, Loamy, Sandy (will tolerate most soil types) Tell us...
Soil drainage: Moist but well-drained, Well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Partial Shade, Full Sun Tell us...
Aspect: South, East, West Tell us...
Exposure: Exposed, Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

GARDENS WITH THIS PLANT

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Georgie
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JOAN TREW
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paul clancy

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