Cogon grass Imperata cylindrica 5-10 pot P9

Size: Potmaat leidend

5-10cm

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Pot 9x9 cm (P9)

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Benefits according to our specialist

Plantable year-round
Easy to grow
Decorative foliage

Plant features
Description
Planting and care
Packaging and shipping

Genus
Imperata (view all varieties)

Root type
Pot

Pot size
9x9 cm (P9)

Flowering months
June, July

Leaf colour
Green, White

Possibilities
Border, Group planting, Planter, Edge planting

Soil type
All soil types, well-drained

Positioning
Semi-shade, Sun

Winter hardiness
-9,4°C / -3,9°C, USDA zone 8b/9a

Fruit-bearing plants
No

Water needs
Average water

Number of plants per m²
9

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)
50

Art. no.
1000653

Description

Imperata cylindrica | Cogon grass

Imperata cylindrica, commonly known as cogon grass or alang-alang, is an ornamental grass known for its upright growth habit and adaptability to a range of garden designs. Its slender, green blades add texture and movement to borders and group plantings, and it is equally at home in planters or as an edging plant.

Native to Japan, this species is beloved by garden enthusiasts for its understated elegance and the subtle color changes of its foliage throughout the seasons.

Key Features

The Imperata is a versatile plant, suitable for a variety of landscaping uses including borders, group plantings, and edge plantings.
It thrives in both sunshine and partial shade, making it an excellent choice for various garden locations.
The grass exhibits a beautiful green hue throughout the spring, summer, and autumn months.
In the summer, it features unique grey and silver flowers that add a touch of sophistication and charm to any garden setting.
Imperata cylindrica achieves a modest ultimate height of about 50 cm, allowing it to blend seamlessly without overwhelming other plants in the garden.

Tips

For optimal growth, plant Imperata cylindrica in well-drained soil, although it is tolerant of all soil types.
Regular watering will maintain its lush appearance, particularly during dry periods, as it is not drought-resistant.
Propagation through division is recommended to stimulate new growth and maintain plant health. This should be carried out in the spring or autumn.
Enjoy the low-maintenance nature of this grass, as it requires no pruning, allowing it to grow naturally and fill in your garden space gracefully.

Ideal placement of a Imperata cylindrica

Imperata cylindrica flourishes best when positioned in full sun or partial shade, as ample sunlight is conducive to the development of its striking foliage colors. The species is adaptable to a range of soil types, provided the soil is well-drained, which is crucial for preventing root rot. This grass's upright growth habit and vibrant green blades that transition to a silvery hue in the summer make it an excellent choice for borders and group plantings where it can receive adequate sunlight to maintain its ornamental appeal.

How do I plant a Imperata cylindrica?

Planting Imperata cylindrica requires a site with full sun to partial shade and well-drained soil, accommodating its adaptable nature. The species thrives in a variety of soil types, ensuring versatility in garden design. It is best to space the plants adequately to allow for their upright growth habit and eventual spread to a height of 50 cm. After planting, it's crucial to water regularly to establish a strong root system. For longevity and vigor, division is recommended in the spring or autumn months, which promotes rejuvenation and maintains plant health. Careful placement and routine care will result in a striking display of its unique foliage and inflorescence.

Pruning a Imperata cylindrica

Pruning is generally not necessary for maintaining Imperata cylindrica's elegant form. Its upright growth habit naturally sustains a tidy appearance throughout the growing season. However, as a deciduous species, it will shed its foliage annually. To encourage vigorous growth and maintain a fresh appearance, one may opt to cut back the old foliage in late winter or early spring before new growth emerges. This simple maintenance ensures that the plant remains vibrant and attractive year after year.

Watering a Imperata cylindrica

Imperata cylindrica thrives with consistent moisture, particularly in well-drained soils where nutrients are readily available. While its water needs are average, it's crucial to ensure the soil does not completely dry out, particularly during hot spells. Watering should be deep enough to reach the roots, encouraging them to grow deeper and making the plant more resilient. This species is not drought resistant, and lack of adequate hydration may affect its lush, green appearance and growth. During the growing season, if rainfall is scarce, supplement with additional watering to maintain optimal soil moisture.

Fertilising a Imperata cylindrica

To support the vigorous growth and striking green foliage of Imperata cylindrica, a balanced approach to fertilization is recommended. Though this species can thrive in a variety of soil conditions, applying a complete fertilizer in early spring can greatly benefit its development. A subsequent application may be beneficial during the growing season to sustain its energy needs, especially as it prepares for its unique flowering period in the summer months.

When fertilizing, evenly distribute the nutrients around the base of the plant, ensuring that the fertilizer does not come into direct contact with the leaves or stems to prevent potential damage. Watering after application will help to dissolve the fertilizer, allowing the nutrients to percolate into the soil and reach the roots effectively. A judicious fertilization regime will not only enhance the plant's growth but also its resilience.

The characteristics of a Imperata cylindrica

For garden enthusiasts seeking a touch of unique texture, Imperata cylindrica offers slender, upright blades that present a showy display, especially when backlit by the sun. This species thrives in a pot, allowing for easy management of its spreading nature. It's a splendid choice for creating contrast in mixed container plantings and adds an element of movement and grace to any setting.

Separating/dividing a Imperata cylindrica

To propagate Imperata cylindrica effectively and ensure its health, division is recommended. This process, ideally conducted in the spring or autumn, involves removing the plant from the soil and carefully separating it into smaller sections. Each section should have a portion of the root system attached, which will facilitate successful re-establishing when these divisions are planted anew. This method not only stimulates robust growth but also maintains the vitality of the species, making it a preferred practice for gardeners looking to expand their display of the striking, upright blades of this grass.

What will be the height of Imperata cylindrica?

Imperata cylindrica typically grows to a height ranging from 10 to 50 centimeters, making it an ideal choice for low-growing ornamental grass in garden settings.

What will be the width of Imperata cylindrica?

Imperata cylindrica achieves a maximum spread ranging between 10 and 50 centimeters.

Which soil type is most suitable for the Imperata cylindrica?

Imperata cylindrica is adaptable to various soil types, but it thrives best in well-drained soil. Ensuring proper drainage will contribute to the optimal growth of this plant.

What is the ideal positioning for the Imperata cylindrica?

Imperata cylindrica thrives in locations that offer a balance of sunlight and partial shade. This plant flourishes when placed in an area that receives both direct sunlight and some protection from the intensity of the sun, such as under the dappled light of larger plants or trees.

What is the flowering colour of the Imperata cylindrica?

Imperata cylindrica displays green and white flowers, adding a unique and visually interesting touch to the plant's appearance.

Is the Imperata cylindrica hardy?

Imperata cylindrica is considered winter hardy, with a tolerance for temperatures ranging from -9.4°C to -3.9°C. It is classified within USDA hardiness zones 8b to 9a, indicating its ability to withstand winter conditions in these regions.

Is the Imperata cylindrica evergreen?

Imperata cylindrica is not an evergreen plant. It is a deciduous plant, meaning it sheds its leaves annually in the autumn and remains bare throughout the winter. New leaves then regrow in the spring.

What is the growth strength of the Imperata cylindrica?

Imperata cylindrica typically achieves its mature height within a relatively short timeframe of two to five years. This indicates a moderate to rapid growth rate, allowing for the plant to reach its full potential within a few years.

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