Jacob's ladder Polemonium caeruleum 'Album' 5-10 pot P9

Size: Potmaat leidend

5-10cm

|

Pot 9x9 cm (P9)

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Available from: 03/02/2025

Number of m2

Nr. of plants

2.90

2.90 per piece

incl. VAT, excl. shipping costs (calculated in shopping cart)

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2+ £3.20

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12+ -4.7% £3.05

24+ -6.3% £3.00

96+ -9.4% £2.90

Benefits according to our specialist

Plantable year-round
Low maintenance
Fast-growing

Plant features
Description
Planting and care
Packaging and shipping

Genus
Polemonium (view all varieties)

Root type
Pot

Pot size
9x9 cm (P9)

Flowering months
May, June, July

Leaf colour
White

Possibilities
Border, Group planting

Soil type
All soil types, well-drained

Positioning
Semi-shade, Sun

Winter hardiness
-23,3°C / -20,6°C, USDA zone 6a

Fruit-bearing plants
No

Water needs
Average water

Number of plants per m²
6

Evergreen plants
No

Leaf colour
Green

Fragrant plants
No

Growth habit
Upright growth habit

Height at time of delivery excluding pot/clod
5-10

Mature height (cm)
60

Art. no.
1000959

Description

Polemonium caeruleum 'Album' | Jacob's ladder

The Polemonium caeruleum 'Album' is a beautiful perennial plant, also known as Jacob's ladder. This plant showcases stunning white flowers during the months of May, June, and July. Its luscious green foliage provides a striking backdrop for its blossoms, making it an eye-catching addition to any garden. Ideal for borders or group plantings, this species brings a touch of elegance and charm to your outdoor space.

Key Features

The Polemonium caeruleum 'Album' is a versatile plant, thriving in various soil types as long as they are well-drained.
It can be grown in both sunny and partially shaded areas, making it suitable for different garden locations.
Its upright growth habit reaches a maximum height of 60 cm, providing an attractive vertical element to your garden design.
Though not an evergreen, its foliage remains a vibrant green throughout the spring, summer, and autumn months.

Tips

To propagate Jacob's ladder, you can either sow seeds or divide the plant during spring or autumn. Dividing the plant not only encourages new growth but also keeps it healthy.
Regularly remove faded flowers to promote plant growth, prevent unwanted seeding, and maintain a neat appearance.
Ensure the plant is well-watered, submerging it when necessary. However, be mindful that Polemonium caeruleum 'Album' is not drought-resistant, so keep an eye on its water requirements.
As the plant is deciduous, remember to care for it accordingly during the changing seasons for optimal growth and health.

Ideal placement of a Polemonium caeruleum 'Album'

For optimal growth, Polemonium caeruleum 'Album' thrives best in locations that offer sun to partial shade. This species prefers a balance of light to encourage its striking white blooms through the flowering months of May to July. While it is adaptable to most soil types, ensuring the soil is well-drained is crucial for its health. As it does not retain its foliage throughout the year, selecting a spot that complements its seasonal presence within a border or group planting will enhance its visual contribution to any garden space.

How do I plant a Polemonium caeruleum 'Album'?

For successful establishment in the garden, Polemonium caeruleum 'Album' should be planted in a location that receives full sun to partial shade, ensuring the white blooms are prolific during the flowering months. The ideal soil should be well-drained, yet these plants can adapt to a variety of soil types. Upon planting, water the plant thoroughly to settle the soil around the root ball and eliminate any air pockets. Regular watering is essential, especially in dry periods, as this cultivar is not drought resistant. The upright growth habit of this species will reach its full height of 60 cm, providing an elegant vertical element to borders and group plantings.

Pruning a Polemonium caeruleum 'Album'

For an invigorating effect on growth and to maintain a tidy appearance, it is advisable to attentively prune Polemonium caeruleum 'Album' by removing spent flowers. Deadheading the white blossoms regularly as they begin to fade is vital to discourage unwanted self-seeding and to possibly encourage a second bloom. This practice not only prolongs the flowering period but also contributes to the plant's vigor and aesthetic appeal. With its upright growth habit, timely pruning ensures that this species remains an attractive feature in any garden setting.

Watering a Polemonium caeruleum 'Album'

For the Polemonium caeruleum 'Album', maintaining consistent soil moisture is pivotal to its health and vibrancy, particularly through its blooming period between May and July. The ideal watering method for this species is submersion, which ensures that the water reaches deep into the soil, providing a thorough quench for the plant's roots. It is crucial to guarantee that the soil is well-drained to prevent waterlogging. During periods of prolonged dryness, increase watering frequency to sustain the plant's lush green foliage and support its upright growth habit.

Fertilising a Polemonium caeruleum 'Album'

To ensure robust vitality and an abundant display of pristine white flowers, fertilizing Polemonium caeruleum 'Album' is essential. A balanced, slow-release fertilizer is recommended, ideally applied in early spring to coincide with the onset of the growing season. This plant flourishes with a consistent nutrient supply, which supports its upright growth habit and enhances the lush green foliage.

It is advisable to follow up with a second application of fertilizer in mid-summer to sustain the plant's energy needs during the peak of its flowering period. Care should be taken to avoid over-fertilization, as this can lead to excessive foliage at the expense of blooms. By providing the right amount of nutrients, one can expect this species to reach its full height and floral potential, gracing borders and group plantings with its serene beauty.

The characteristics of a Polemonium caeruleum 'Album'

The Polemonium caeruleum 'Album' is a truly fascinating specimen with its clusters of bell-shaped, pure white flowers. This variety, often overlooked for its delicate beauty, provides a serene backdrop in any garden. Its foliage, resembling the rungs of a ladder, adds a unique texture and depth to plant compositions. Thriving in a pot, it allows for flexibility in garden design and can be easily moved to suit changing aesthetic or environmental needs, making it an invaluable addition to a plant enthusiast's collection.

Separating/dividing a Polemonium caeruleum 'Album'

To ensure continued health and vitality, Polemonium caeruleum 'Album' benefits from division every few years. This process, best conducted in the cooler months of spring or autumn, involves carefully lifting the plant from the soil and separating it into several sections. Focus on retaining the vigorous outer portions and discard the older center. Replant these divisions promptly, ensuring they are well-spaced to accommodate future growth. This practice not only rejuvenates the plant but also provides an opportunity to increase your stock of this charming species with its distinctive white blooms.

What will be the height of Polemonium caeruleum 'Album'?

Polemonium caeruleum 'Album' typically grows to a height ranging from 50 centimeters to 1 meter.

What will be the width of Polemonium caeruleum 'Album'?

Polemonium caeruleum 'Album' will reach a final width ranging from 10 centimeters to 50 centimeters.

Which soil type is most suitable for the Polemonium caeruleum 'Album'?

Polemonium caeruleum 'Album' is adaptable to various soil types, but it thrives best in well-drained soil. Ensuring proper drainage will provide an optimal growing environment for this plant.

What is the ideal positioning for the Polemonium caeruleum 'Album'?

The ideal location for Polemonium caeruleum 'Album' is a place where it can receive both sunlight and partial shade. This plant thrives in an environment where it can experience periods of direct sunlight as well as partial shade throughout the day.

What is the flowering colour of the Polemonium caeruleum 'Album'?

The blossoms of Polemonium caeruleum 'Album' exhibit a delicate white hue, adding a touch of elegance to the plant's appearance.

Is the Polemonium caeruleum 'Album' hardy?

Yes, Polemonium caeruleum 'Album' is considered winter hardy. It can withstand temperatures as low as -23.3°C to -20.1°C, falling within the USDA hardiness zone 6a. This indicates that the Polemonium caeruleum 'Album' is well-equipped to endure winter conditions in various regions, provided it is exposed to temperatures within the specified range.

Is the Polemonium caeruleum 'Album' evergreen?

Polemonium caeruleum 'Album' is not an evergreen plant. This indicates that it sheds its leaves at certain times of the year, typically in the autumn, and produces new foliage in the following spring.

What is the growth strength of the Polemonium caeruleum 'Album'?

Polemonium caeruleum 'Album' typically reaches its ultimate height over a span of 2 to 5 years, showcasing a moderate growth rate.

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