Siberian bugloss Brunnera macrophylla 'Jack Frost' pot

Size: Potmaat leidend

5-10cm

|

Pot 9x9 cm (P9)

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Available from: 03/02/2025
- 5-10cm
  
  |
  
  Pot 9x9 cm (P9)
  
  |
  
  From 5.15
  
  |
  
  Available from: 03/02/2025
- 20-30cm
  
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  Pot 5 ltr. (C5)
  
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  From 23.70
  
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  Temporarily sold out
- 10-15cm
  
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  Pot 2 ltr. (C2)
  
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  From 10.75
  
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  Temporarily sold out

Number of m2

Nr. of plants

5.15

5.15 per piece

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

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Nr. of plants

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24+ -7.8% £5.30

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Benefits according to our specialist

Plantable year-round
Low maintenance
Decorative foliage

Plant features
Description
Planting and care
Packaging and shipping

Genus
Brunnera (view all varieties)

Root type
Pot

Pot size
9x9 cm (P9)

Flowering months
April, May

Leaf colour
Blue

Possibilities
Border, Group planting, Underplanting, Edge planting

Soil type
All soil types, well-drained

Positioning
Semi-shade, Shade

Winter hardiness
-20,6°C / -15,0°C , USDA zone 6b/7a

Fruit-bearing plants
No

Water needs
Average water

Number of plants per m²
9

Evergreen plants
No

Leaf colour
Grey, Green

Fragrant plants
No

Growth habit
Clump-forming growth habit

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

Mature height (cm)
40

Art. no.
1000140

Description

Brunnera macrophylla 'Jack Frost' | Siberian bugloss

The Brunnera macrophylla 'Jack Frost' is a treasure for the shaded parts of the garden, enchanting onlookers with its delicate blue flowers in the spring. Commonly known as Siberian bugloss, this woodland perennial is esteemed for its heart-shaped silver leaves that are intricately veined with rich green. It adds a touch of brightness to otherwise dark areas and is particularly effective in border planting or as an undergrowth filler.

Key Features

The silver foliage of Brunnera provides a luminous backdrop for its azure spring blooms, creating a stunning contrast that draws the eye and enlivens the garden.
This variety thrives in partial to full shade, making it an ideal choice for those challenging spots where other plants may struggle.
With its clump-forming growth habit, Brunnera macrophylla 'Jack Frost' naturally fills out spaces, making it perfect for group plantings and edges.
The plant is deciduous, with foliage colors transitioning from green, grey, and silver in spring and summer.

Tips

To ensure the health and vitality of your Brunnera macrophylla 'Jack Frost', it is advisable to divide the plant every few years. This process rejuvenates the plant and stimulates robust growth.
Although no pruning is necessary, removing old foliage in late winter before new growth starts can help maintain a tidy appearance.
While the Siberian bugloss is not drought tolerant, its water needs are average. Ensure consistent watering, especially during dry spells, to keep the soil evenly moist.
Lastly, while the Siberian bugloss is undemanding in terms of soil quality, it does prefer well-drained soil. Ensure proper drainage to prevent waterlogging, which could be detrimental to the plant's health.

Ideal placement of a Brunnera macrophylla 'Jack Frost'

To flourish, Brunnera macrophylla 'Jack Frost' should be sited in an area with partial shade or full shade, where it is shielded from the harsh afternoon sun. This location will highlight the striking variegated foliage, characterized by its green, grey, and silver hues. The soil must be well-drained yet able to retain moisture, as the plant requires average water and is not drought-resistant. While it tolerates a range of soil types, ensuring enriched, humus-rich soil will support optimal growth and enhance the vibrant blue blooms that appear in spring.

How do I plant a Brunnera macrophylla 'Jack Frost'?

To ensure optimal growth, Brunnera macrophylla 'Jack Frost' should be planted in locations that provide partial shade to full shade, mimicking its natural woodland habitat. The soil must be well-drained yet able to retain moisture, as this species thrives in consistently moist conditions. When planting this pot-grown perennial, space each specimen adequately to allow for its clump-forming habit. Early establishment is crucial, so maintain regular watering schedules until the plants are well-established. This will enable the root system to develop properly, creating a robust foundation for the plant to flourish in the garden setting.

Pruning a Brunnera macrophylla 'Jack Frost'

Brunnera macrophylla 'Jack Frost' is a deciduous species that typically requires minimal maintenance and is not in need of regular pruning. Its natural clump-forming growth habit allows it to maintain an appealing shape throughout its growing season. After the bloom period in spring, deadheading the spent flower stems can encourage a tidy appearance, but this is more for aesthetic purposes than health or growth. Come autumn, the leaves will naturally wither away, and any remaining foliage can be cleared to keep the area neat.

Watering a Brunnera macrophylla 'Jack Frost'

To ensure the vitality and lush foliage of Brunnera macrophylla 'Jack Frost', maintaining consistent soil moisture is crucial. Despite its average water requirement, this species thrives with a regular watering schedule, particularly during extended dry spells and in the growing season. It is worth noting that while the plant appreciates moisture, it is imperative to avoid waterlogged conditions. A well-draining soil facilitates healthy growth, allowing water to percolate efficiently to the roots without causing stagnation. Regular watering promotes the characteristic silvery foliage and delicate blue blooms that make this cultivar a distinguished presence in shaded garden areas.

Fertilising a Brunnera macrophylla 'Jack Frost'

To support the stunning foliage and vivid blue blooms of Brunnera macrophylla 'Jack Frost', a balanced approach to fertilizing is necessary. Apply a general-purpose, slow-release fertilizer early in the growing season as new growth appears, typically around March or April. This initial feeding will sustain the plant throughout its peak growing and flowering period in spring. For continued vigor, a second application in early summer can provide an additional nutrient boost, ensuring the clump-forming perennial remains robust and displays its characteristic silver-frosted leaves to full effect. It is essential to follow the manufacturer's instructions for dosage and to distribute the fertilizer evenly around the base of the plant, avoiding direct contact with the leaves to prevent burn.

The characteristics of a Brunnera macrophylla 'Jack Frost'

Brunnera macrophylla 'Jack Frost' thrives in cool, moist conditions, making it an ideal choice for shaded or woodland gardens. Its heart-shaped leaves with distinctive frosty variegation offer a luminous quality that brightens up darker areas. This species is also known for its forget-me-not-like flowers, which provide a delicate blue contrast in spring. Moreover, its robust nature allows it to fill space efficiently, making it a superb ground cover that reduces the need for frequent weeding.

Separating/dividing a Brunnera macrophylla 'Jack Frost'

To maintain the health and vitality of Brunnera macrophylla 'Jack Frost', division is recommended. This process reinvigorates the plant's growth and should be carried out during the cooler months of spring or autumn. Gently remove the plant from the soil, ensuring to keep the root ball intact. Once excavated, carefully divide the clump into smaller sections, each with a portion of the root system. Replant these sections at the same soil depth they were growing previously, spacing them adequately to accommodate future growth. This division allows gardeners to spread the stunning foliage and delicate blue flowers of this cultivar throughout their garden.

What will be the height of Brunnera macrophylla 'Jack Frost'?

Brunnera macrophylla 'Jack Frost' typically reaches a height ranging from 10 to 50 centimeters when fully mature.

What will be the width of Brunnera macrophylla 'Jack Frost'?

Brunnera macrophylla 'Jack Frost' will attain a final spread ranging from 50 centimeters to 1 meter.

Which soil type is most suitable for the Brunnera macrophylla 'Jack Frost'?

Brunnera macrophylla 'Jack Frost' can thrive in various soil types as long as they are well-drained. Ensuring the soil has good drainage is essential for promoting healthy growth and optimal development of this plant.

What is the ideal positioning for the Brunnera macrophylla 'Jack Frost'?

The optimal location for Brunnera macrophylla 'Jack Frost' is an area with partial shade or full shade. This plant thrives in conditions where direct sunlight is limited, such as under the shade of larger plants or trees, or in areas with minimal exposure to sunlight.

What is the flowering colour of the Brunnera macrophylla 'Jack Frost'?

The blossoms of Brunnera macrophylla 'Jack Frost' exhibit a delightful blue hue, adding a touch of elegance to this charming plant variety.

Is the Brunnera macrophylla 'Jack Frost' hardy?

Certainly, Brunnera macrophylla 'Jack Frost' exhibits winter hardiness. This plant can endure temperatures as low as -20.6°C to -15.0°C, corresponding to USDA hardiness zones 6b to 7a. Consequently, in regions within these zones, Brunnera macrophylla 'Jack Frost' is well-equipped to withstand winter conditions without requiring special protective measures.

Is the Brunnera macrophylla 'Jack Frost' evergreen?

Brunnera macrophylla 'Jack Frost' is not an evergreen plant. This means that the plant sheds its leaves at certain times of the year and regrows new foliage.

What is the growth strength of the Brunnera macrophylla 'Jack Frost'?

Brunnera macrophylla 'Jack Frost' typically takes approximately two to five years to reach its ultimate height. This suggests that it has a moderate growth rate, gradually developing over a span of a few years.

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