Celosia argentea var. cristata Red Velvet - seeds
Celosia argentea var. cristata Red Velvet - seeds
Celosia argentea cristata Red Velvet
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Description
Celosia argentea var. cristata 'Red Velvet' is an annual Cockscomb with velvety deep red flowers. Its crimped and crisped, vibrant flowers are wide and voluminous on tall and sturdy, unbranched stems. They last a long time in a vase. The plant has good resistance to fungal diseases, Botrytis and Fusarium. Easy to grow in the sun, in well-drained and moist soil.
Celosia argentea var cristata is a herbaceous annual plant of the Amaranthaceae family native to tropical and temperate regions of America and Asia. It is cultivated for ornamental purposes, due to its unusual inflorescences resembling wavy crests, which have earned it the common name of Cockscomb. It is a tender perennial plant with a short lifespan. It likes heat and rich, moist, but well-drained soils.
The 'Red Velvet' Cockscomb has velvety flowers on tall stems ranging from 80 cm to 1.20 m. This astonishing flowering takes place in summer, from July to September, or even until the first frost depending on the sowing date. The plant develops a single, unbranched, ridged stem, with long triangular leaves which are pointed at the end, smooth, light green or sometimes tinged with red to violet. At the end of the stem, a compact, spreading, wavy or pleated inflorescence develops, often with a very velvety appearance. It consists of tiny petal-less flowers, with coloured bracts. Each inflorescence, sometimes reaching 20 cm in diameter, can last up to 8 weeks. Its colour lasts a long time and does not fade, even when dried. After pollination, seeds form and easily germinate in light soil.
Cockscombs are theatrical flowers, with a dramatic temperament that expresses itself well in floral compositions or in the heart of perennial beds and stands out in large pots on terraces. They enhance the simple blooms of field daisies and accompany the blue stars of asters or the delicate flowers of Cosmos. These plants are sensational when planted in groups of 3 to 5 in the middle of a carpet of ground cover plants such as Ceratostigma plumbaginoides with blue flowers or bunny's ears or Stachys with silvery velvety foliage. In a vase, do not put too much water and change it often to avoid stem rot.
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Flowering
Foliage
Plant habit
Botanical data
Celosia
argentea cristata
Red Velvet
Amaranthaceae
Cultivar or hybrid
Planting and care
Sow finely from March to May, 2-3 mm deep in small furrows spaced 30 cm apart, in soil which has been well-worked and loosened to a depth of 30 cm. Water regularly to maintain some moisture, especially during dry periods. You can also sow in pots or trays filled with moist seed compost, covering the seeds with a very fine pinch of compost or vermiculite. Keep between 20 and 25 °C. Light promotes germination. Keep the surface of the compost moist but not waterlogged; germination usually takes 3 to 15 days. Transplant the young plants into 7.5 cm pots or trays and plant outside once all risk of frost has passed.
Amaranths are heat-loving plants that thrive in nitrogen-rich soils. Plant them in full sun, in light and well-amended soil. However, make sure the soil is not waterlogged or too wet, as this could cause the roots to rot.
Sowing period
Intended location
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
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In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.