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Melinis nerviglumis Karoo Queen

Melinis nerviglumis Karoo Queen

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A perennial grass, but sensitive to cold, of modest size (50 to 60cm), which flowers in the first year. It forms a dense clump of long, slender, upright leaves, green with a bluish tint. From July onwards, numerous feathery and slender flower spikes appear, changing from bright pink to dark red. This graceful and colourful flowering is highly prized in floral art and remarkable in the garden. Outside mild climates, Melinis nerviglumis is grown as an annual or in pots to overwinter frost-free. Give it sun and well-drained soil, even poor, sandy and dry soil in summer. Hardiness: up to -5°C at the coldest. Sow in spring, under heated cover.
Flower size
15 cm
Height at maturity
60 cm
Exposure
Sun
Annual / Perennial
Perennial
Germination time (days)
14 days
Sowing method
Sowing under cover
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Sowing period February to May
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Flowering time July to October
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Description

Melinis nerviglumis 'Karoo Queen' is a beautiful selection of a tender grass also known as Melinis rhynchelytrum. Its feathery and shiny flower spikes that range from pink to dark red are highly sought after in floral art. This plant grows in a small, dense clump of green foliage with a bluish tint, much like a blue fescue. Its flowering, enjoyed from July to October, is a delight. A graceful and colourful little 'grass' that will bring a lot of charm to seasonal flower beds. Outside of our mildest regions, it is easily grown as an annual or in pots to overwinter indoors and protect from frost.  

Melinis nerviglumis belongs to the Poaceae family. It is native to dry regions of Africa, where it thrives in well-drained soil within savannahs. While not frost-resistant (tolerating temperatures down to -5°C at most), this species is perfectly adapted to poor soils and seasonal water scarcity. The vegetation persists during mild winters but dries up elsewhere. 

Melinis nerviglumis 'Karoo Queen' is a non-invasive grass. The plant forms a tight clump of upright, thread-like and pointed leaves that can reach 35-40cm in length. It will occupy about 35-40cm in all directions. The colour of the leaves is a green with a bluish tint, sometimes turning reddish-purple towards the end of the season due to cold weather. Flowering begins in July or mid-August, depending on the sowing date. Thin floral stems emerge from the foliage, reaching a height of 60cm, slightly arching and bearing very thin inflorescences that can be more or less upright or trailing, remaining decorative on the plant for a long time. Their colour ranges from various shades of pink to dark red when fully ripe. This flowering captures the autumn sun in a magnificent way. After wind pollination, seeds form, which are sought after by certain birds. 

Melinis nerviglumis 'Karoo Queen' is a graceful plant for seasonal flower beds and terrace displays, similar to the well-known Pennisetum x advena Rubrum. In a summer flower bed, it pairs perfectly with Ammi visnaga 'The Giant' and tall, undemanding asters (Aster turbinellusAster laevis) for example. Also consider planting it among tall sedums (Sedum 'Matrona', 'Septemberglut') and cosmos to create a lovely late-season scene.  This Melinis also makes a beautiful companion for repeat-flowering roses, catmints, and lavenders.

Melinis nerviglumis Karoo Queen in pictures

Melinis nerviglumis Karoo Queen (Plant habit) Plant habit

Flowering

Flower colour pink
Flowering time July to October
Inflorescence Spike
Flower size 15 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Semi-evergreen
Foliage colour green

Plant habit

Height at maturity 60 cm
Spread at maturity 35 cm
Growth rate very fast

Botanical data

Genus

Melinis

Species

nerviglumis

Cultivar

Karoo Queen

Family

Poaceae

Origin

Cultivar or hybrid

Planting and care

Sowing:

Sow 3 to 5 seeds per cell in trays with not too small cells or directly in a 10cm pot filled with special sowing compost, well-drained. Cover the seeds with fine vermiculite and maintain the temperature between 22-25 °C. The substrate should remain slightly moist.

After the emergence of young plants: after 5 to 7 days, reduce the temperature to 20-22º C. Avoid excessive watering. 7 to 10 days later, gradually lower the temperature to 15-18 °C. Maintain moderate humidity, avoid waterlogged soil. When the plants are manageable, transplant them into individual buckets. They will be placed in their final location (planter or open ground) once the risk of frost has passed.

Cultivation:

Melinis nerviglumis fears 4 things: cold, excessive humidity, heavy soils, and shaded areas where it quickly deteriorates. Dig a planting hole of a good size (40cm in all directions), optionally place a layer of gravel at the bottom, and use a mixture of compost, soil, and sand in which you will plant this Melinis. In a well-drained, sandy, poor soil and in full sun, it can withstand winter temperatures of around -5°C for a very short period. If August is very dry, water your grass to help it flower.

Pot cultivation is easy in a mixture of compost/garden soil/sand. Choose a container of at least 7 liters, with holes in the bottom to allow watering to drain. The pot can be brought indoors in winter in a bright room kept frost-free but not too heated. Reduce watering in winter without allowing the substrate to dry out completely. Divide your grass every three years to regenerate it.

Sowing period

Sowing period February to May
Sowing method Sowing under cover
Germination time (days) 14 days

Intended location

Suitable for Meadow, Rockery
Type of use Border, Edge of border, Container, Greenhouse
Hardiness Hardy down to -4°C (USDA zone 9b) Show map
Ease of cultivation Amateur
Exposure Sun
Soil pH Acidic, Neutral
Soil moisture Dry soil, Moist soil, Very well-draining.

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