Purple moor-grass Molinia arundinacea 'Karl Foerster' 5-10 pot P9

Size: Potmaat leidend

5-10cm

|

Pot 9x9 cm (P9)

|

In stock up to and including 22/12/2024

Number of m2

Nr. of plants

3.45

3.45 per piece

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

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2+ £3.80

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24+ -6.6% £3.55

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Molinia arundinacea 'Karl Foerster' Can be planted now
Careful and fast delivery throughout the United Kingdom

Benefits according to our specialist

Plantable year-round
Low maintenance
Decorative foliage

Plant features
Description
Planting and care
Packaging and shipping

Genus
Molinia (view all varieties)

Root type
Pot

Pot size
9x9 cm (P9)

Flowering months
July, August, September

Leaf colour
Brown, Red

Possibilities
Border, Group planting, Solitary

Soil type
All soil types, well-drained

Positioning
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
Clump-forming and upright growth habit

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

Mature height (cm)
175

Art. no.
1000814

Description

Molinia arundinacea 'Karl Foerster' | Purple moor-grass

Introducing Molinia arundinacea 'Karl Foerster', a statuesque variety of purple moor-grass that brings an air of elegance to any garden. Known for its tall, slender form and striking floral display, this perennial grass is a favorite among landscape designers and garden enthusiasts alike for adding texture and movement to garden borders and group plantings.

Its versatility allows it to stand proudly as a solitary feature or to be integrated into a diverse tapestry of garden plants, providing visual interest from midsummer through autumn.

The main features of Molinia arundinacea 'Karl Foerster'

Key features of Molinia arundinacea 'Karl Foerster' are numerous and contribute to its popularity in ornamental horticulture:

The plant boasts a clump-forming and ascending growth habit, which allows it to create a dense and upright presence in the landscape.
It flowers profusely from July to September with inflorescences that shift in color from purple in the summer to brown and red tones as the season progresses.
In autumn, the green foliage transforms into a striking yellow, adding a new layer of color to the garden palette.
While 'Karl Foerster' reaches an impressive height of approximately 1.75 meters, it does so without requiring extensive care or water, having an average water need.
This deciduous grass is adaptable to a variety of soil types as long as they are well-drained, and it thrives best in full sun.

Tips

To ensure the healthiest growth of Molinia arundinacea 'Karl Foerster', divide the plant every few years during spring or autumn. This not only reinvigorates the plant but also helps maintain its size and form.
Although the purple moor-grass is not drought-resistant, it can be watered moderately, especially during dry spells to maintain its lush appearance.
Remember, as a deciduous plant, 'Karl Foerster' will shed its leaves in winter, but its structural form will continue to provide interest even in the dormant season.

Ideal placement of a Molinia arundinacea 'Karl Foerster'

For optimal growth, Molinia arundinacea 'Karl Foerster' should be situated in a location that receives full sun. This exposure ensures that the grass can achieve its full height of up to 1.75 meters and develop its characteristic summer purple flowers. While adaptable to a variety of soil types, it is imperative that the chosen site offers well-drained soil to prevent waterlogging, which this species does not tolerate well. Regular watering will satisfy its average water needs, particularly during periods of dry weather, as it is not drought-resistant.

How do I plant a Molinia arundinacea 'Karl Foerster'?

For successful establishment, Molinia arundinacea 'Karl Foerster' should be planted in well-drained soil that can accommodate its clump-forming and ascending growth habit. It thrives in full sun, which encourages the robust development of its characteristic brown and red flowers in the summer months. When planting, ensure adequate spacing to facilitate air circulation and to allow for the plant's potential reach of up to 1.75 meters. Regular watering is essential to maintain average soil moisture levels, especially during the initial growth phase post-planting. Monitor the soil's moisture content to avoid overwatering, providing conditions conducive to the plant's health and vigor.

Pruning a Molinia arundinacea 'Karl Foerster'

Molinia arundinacea 'Karl Foerster' requires minimal pruning to maintain its natural, graceful form. It is best to cut back the foliage in late winter or early spring before new growth begins. This pruning stimulates fresh growth and allows for the plant's lovely green spring foliage to emerge unobstructed. The tall, elegant stems that display the plant's characteristic purple summer blooms and golden autumn hues should be pruned close to the ground, revitalizing the plant for the upcoming season.

Watering a Molinia arundinacea 'Karl Foerster'

Molinia arundinacea 'Karl Foerster' thrives with consistent moisture, especially during its peak growth in the summer months. It is essential to ensure the soil remains well-drained to prevent waterlogging. While the species has an average water need, attention to irrigation is crucial during extended periods of dry weather to maintain its vigor and the striking green to yellow transition of its foliage in autumn. Regular, deep watering will encourage a robust root system, supporting its elegant, clump-forming habit and the display of its characteristic brown and red inflorescences.

Fertilising a Molinia arundinacea 'Karl Foerster'

For optimal growth and development, Molinia arundinacea 'Karl Foerster' benefits from fertilization at the onset of the growing season. A balanced, slow-release fertilizer applied in early spring provides the necessary nutrients to support the plant's vigorous clump forming and ascending growth habit. As the species adapts well to a variety of soil types, ensure that the fertilizer is appropriate for the existing soil conditions and follow the recommended application rate for ornamental grasses.

Avoid over-fertilization, as this can lead to excessive foliage growth at the expense of the characteristic brown and red inflorescences that appear in late summer. As a deciduous grass, it will lose its foliage in winter, but proper nourishment during the growing season will enhance its resilience and the vibrant green foliage color that transitions to a striking yellow in autumn.

The characteristics of a Molinia arundinacea 'Karl Foerster'

Molinia arundinacea 'Karl Foerster' is a remarkable ornamental grass that adds texture and movement to any garden space. Its tall, slender stems and feathery flowers sway gracefully in the breeze, providing a dynamic visual experience. This species thrives in a variety of soil conditions and displays exceptional tolerance to different moisture levels, making it a versatile choice for landscapers. It's noteworthy that as the seasons change, the foliage offers a stunning array of colors, from vibrant greens to warm autumnal hues.

Separating/dividing a Molinia arundinacea 'Karl Foerster'

To maintain the health and encourage new growth in this species, division is beneficial. It is advisable to undertake this task in the spring or autumn, which provides optimal conditions for the plants to establish. Carefully remove the entire clump from the ground, ensuring not to damage the root system. Once lifted, divide the clump into smaller sections, each with a robust root system and several shoots. Replant these divisions promptly, spacing them appropriately to accommodate the ascending growth habit and eventual mature height of 1.75 meters. This process rejuvenates the plant, ensuring continued vigor and a robust display in subsequent seasons.

What will be the height of Molinia arundinacea 'Karl Foerster'?

Molinia arundinacea 'Karl Foerster' typically grows to a height of 1 to 1.5 meters when fully mature.

What will be the width of Molinia arundinacea 'Karl Foerster'?

Molinia arundinacea 'Karl Foerster' achieves a final spread ranging from 50 centimeters to 1 meter.

Which soil type is most suitable for the Molinia arundinacea 'Karl Foerster'?

Molinia arundinacea 'Karl Foerster' is adaptable to various soil types, but it thrives best in well-drained soil. Ensuring proper drainage is essential for the healthy growth and development of this particular plant.

What is the ideal positioning for the Molinia arundinacea 'Karl Foerster'?

Molinia arundinacea 'Karl Foerster' thrives best in a location with ample sunlight. This plant species is ideally situated in an area that receives direct sunlight, fostering its healthy growth and development.

What is the flowering colour of the Molinia arundinacea 'Karl Foerster'?

The flowers of Molinia arundinacea 'Karl Foerster' display a combination of brown and red hues, adding a unique and rich tone to the plant's appearance.

Is the Molinia arundinacea 'Karl Foerster' hardy?

Indeed, Molinia arundinacea 'Karl Foerster' is considered winter hardy. It can endure temperatures as low as -23.3°C to -20.1°C, placing it within the USDA hardiness zone 6a. This resilience allows the Molinia arundinacea 'Karl Foerster' to thrive during the winter months in various climates, including those with moderately cold temperatures.

Is the Molinia arundinacea 'Karl Foerster' evergreen?

Molinia arundinacea 'Karl Foerster' is not an evergreen plant. It goes through a seasonal cycle of losing its foliage in the autumn and regrowing it in the spring.

What is the growth strength of the Molinia arundinacea 'Karl Foerster'?

Molinia arundinacea 'Karl Foerster' typically achieves its ultimate height within a period of two to five years, signifying a moderately swift growth rate.

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