Perennial cornflower Centaurea montana 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

3.00

3.00 per piece

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

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Nr. of plants

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2+ £3.35

6+ -3.0% £3.25

12+ -6.0% £3.15

24+ -7.5% £3.10

96+ -10.4% £3.00

Benefits according to our specialist

Plantable year-round
Rich flowering
Low maintenance

Plant features
Description
Planting and care
Packaging and shipping

Genus
Centaurea (view all varieties)

Root type
Pot

Pot size
9x9 cm (P9)

Flowering months
May, June, July

Leaf colour
Blue, Purple

Possibilities
Border, Group planting, Edge 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
Grey, Green

Fragrant plants
Yes

Growth habit
Bushy spreading growth habit

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

Mature height (cm)
40

Art. no.
1000231

Description

Centaurea montana | Perennial cornflower

The Centaurea montana, commonly known as the perennial cornflower or mountain bluet, is a cherished addition to any garden with its striking blue and purple blooms. This hardy flowering species is a native of the mountainous regions of Europe and is well-loved for its ease of care and vibrant color that lasts through the spring and summer months.

Centaurea montana is perfect for borders, group plantings, or as an edging plant, bringing a bushy display of green and grey foliage and a delightful fragrance to your garden landscape.

Key Features

Centaurea montana offers a bushy spreading growth habit, reaching a moderate height of 40 cm, which makes it an excellent choice for a variety of garden settings.
The mountain bluet is known for its vibrant blue and red flowers, which are particularly fragrant and bloom profusely from May through July.
It is adaptable to all soil types provided they are well-drained and thrives in both sun and partial shade locations.
While the foliage of Centaurea montana is deciduous, it maintains its lush green color from spring through autumn.
This species is not evergreen, nor is it drought-resistant, thus it has average water needs to sustain its growth and flowering.
One of the most compelling attributes of the perennial cornflower is its fragrance, which adds an olfactory dimension to its visual appeal.

Tips

For propagation, Centaurea montana can be multiplied by division during the spring or autumn, which promotes health and vigor in the plant.
Regular deadheading of spent blooms will encourage further growth and maintain the neat appearance of the plant. Additionally, this prevents unwanted self-seeding.
While the perennial cornflower has average water needs, ensure consistent moisture, particularly in sunnier locations, to keep the plant thriving.
To enjoy the full spectacle of this plant's beauty, consider planting it in groups or along borders where its colors and fragrance can be fully appreciated.

Ideal placement of a Centaurea montana

For optimal growth, Centaurea montana should be situated where it can bask in full sun or enjoy partial shade, emulating its native mountainous European habitats. These conditions not only maximize the vibrancy of its blue and purple blooms but also support its bushy spreading growth habit. Well-drained soil is fundamental, as it accommodates the species' average water requirements while preventing excessive moisture that could impede its health. The plant's adaptability to various soil types makes it a versatile choice for gardeners, ensuring that it thrives when given the appropriate attention to its lighting and soil preferences.

How do I plant a Centaurea montana?

For optimal growth, Centaurea montana should be planted in well-drained soil, although it tolerates a range of soil types. The preferred location includes sunny spots, but it will also thrive in partial shade. When planting, ensure adequate space for its bushy spreading growth habit, allowing the plant to reach its full potential height of around 40 cm. After planting, water the plants to establish roots and maintain an average water need, especially during dry periods. Keep in mind that while this species is not evergreen, its foliage will display a lush green throughout the growing seasons.

Pruning a Centaurea montana

To encourage a robust bushy spreading growth habit and prolong the blooming period of Centaurea montana, regular deadheading is recommended. Removing wilted blossoms prevents the self-seeding process, ensuring that the plant's energy is directed towards producing more vibrant blue and purple flowers. This practice not only stimulates additional flowering but also maintains a tidy appearance. Snip off the spent blooms at the stem just below the flower head to tidy up and invigorate the plant's overall health and aesthetic appeal.

Watering a Centaurea montana

Centaurea montana thrives with evenly moist soil but is adaptable to various conditions, provided the soil is well-drained. Regular watering is essential, especially during dry spells, to maintain its vibrant blooms and lush foliage. Water the plant deeply to encourage a strong root system, allowing the soil to dry slightly between waterings. Overwatering or poor drainage can be detrimental, so moderation and attention to the plant's response are key. During the peak of summer, mulching can help retain soil moisture and provide a stable environment for this charming species.

Fertilising a Centaurea montana

Centaurea montana thrives when provided with the appropriate nutrients, which can be achieved through a balanced fertilization regimen. Apply a general-purpose fertilizer early in the growing season, as new foliage begins to emerge. A second application should follow in midsummer to support the plant through its flowering period and to prepare it for robust growth the following year.

The fertilizer should be spread evenly around the base of the plant, taking care not to come into direct contact with the stems or foliage to prevent potential burn. Watering after fertilization will help dissolve the nutrients and carry them down to the roots. Adhering to this fertilizing schedule ensures this species will exhibit a vibrant display of blossoms and maintain its lush, green foliage throughout the growing season.

The characteristics of a Centaurea montana

While Centaurea montana is widely admired for its vivid blue flowers, a delightful aspect often overlooked is its ability to attract beneficial wildlife, such as pollinators that play a crucial role in the health of your garden. Additionally, this species has a clumping growth habit, which means it can fill garden spaces beautifully without becoming invasive. Its root system, comfortably housed in a pot, allows for easy control of its spread, making it a perfect choice for structured garden designs.

Separating/dividing a Centaurea montana

To ensure the vitality of Centaurea montana, division is a beneficial practice. This process not only stimulates new growth but also contributes to the overall health of the plant. The optimal time for division is during the cooler months of spring or autumn. Carefully lift the plant from the soil and gently separate it into smaller segments, making sure each has a portion of the root system. Replant these segments in well-drained soil, ideally where they can bask in sun or enjoy partial shade. Such division can rejuvenate the plant, resulting in a more robust display of its characteristic blue or purple blooms.

What will be the height of Centaurea montana?

Centaurea montana typically reaches a height ranging from 10 to 50 centimeters when fully mature.

What will be the width of Centaurea montana?

Centaurea montana achieves a maximum width ranging from 50 centimeters to 1 meter as it reaches maturity.

Which soil type is most suitable for the Centaurea montana?

Centaurea montana is adaptable to various soil types, but it thrives best in well-drained soil. Ensuring proper drainage allows for optimal growing conditions for this particular plant species.

What is the ideal positioning for the Centaurea montana?

The ideal location for Centaurea montana is a place where it can receive ample sunlight as well as partial shade. This plant thrives in environments that offer a balance of direct sunlight and some shade throughout the day.

What is the flowering colour of the Centaurea montana?

Centaurea montana displays a lovely spectrum of flower colours, ranging from blue to purple. This variation in colour adds visual interest and beauty to the plant when in bloom.

Is the Centaurea montana hardy?

Yes, Centaurea montana is considered winter hardy. This plant is capable of withstanding temperatures as low as -23.3°C to -20.1°C, which places it within the USDA hardiness zone 6a. Therefore, Centaurea montana is well-suited for enduring the winter season in regions where temperatures fall within its hardiness range.

Is the Centaurea montana evergreen?

Centaurea montana is not an evergreen plant. It is a deciduous plant, which means that it sheds its leaves annually.

What is the growth strength of the Centaurea montana?

Centaurea montana is known for its relatively swift development, typically reaching its full height within a span of two to five years. This plant demonstrates a moderate growth rate, allowing it to mature steadily within a reasonable timeframe.

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