Coreopsis tinctoria Seeds - Plains coreopsis
Coreopsis tinctoria Seeds - Plains coreopsis
Coreopsis tinctoria
Plains coreopsis, Garden Tickseed, Golden Tickseed
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Description
Coreopsis tinctoria is an easy-to-grow and drought-tolerant dye plant. Throughout the summer, it is covered in bright yellow flowers with red spots, revealing a brown centre. They can be used to dye textiles orange-yellow. This large, bushy annual will find its place in a sunny flower bed or even in the vegetable garden. It will attract bees and butterflies. It is an ideal plant for a drought-tolerant garden.
From the Asteraceae family, the Coreopsis genus includes about 80 to 100 species of annuals and perennials that grow in meadows and wooded areas of Central and North America. The tinctoria species is a widespread annual plant in North America. As its name suggests, it is a dye plant. The flowers of this Coreopsis are used for dyeing or pigment production in shades of orange-yellow. They are hand-picked when fully open. For the mordant dyeing technique, they are used fresh or dried. This technique requires a textile preparation step that involves boiling the fabric with alum powder for an hour and then rinsing it. Otherwise, they are dried and ground to be transformed into pigment.
Coreopsis tinctoria forms a bushy clump with light and slender stems. With rapid growth, it can reach between 60 and 90 cm tall and 30 to 45 cm wide. Its basal leaves measure 7 to 10 cm long. They are medium to dark green, entire, pinnate or bipinnate with linear leaflets. From June to October, it is covered in notched ligulate flowers in yellow with reddish-brown aureoles and a central reddish-brown disk. They measure between 3 and 5 cm in diameter. They are nectar-rich and make excellent wildflower bouquets.
If you want to start natural dyeing, here are other easy-to-grow dye plants that can join your Coreopsis tinctoria in the garden. Consider Anthemis tinctoria Wargrave Variety which produces a yellow colour or Centaurea cyanus which offers a beautiful blue shade.
Flowering
Foliage
Plant habit
Botanical data
Coreopsis
tinctoria
Asteraceae
Plains coreopsis, Garden Tickseed, Golden Tickseed
Coreopsis cardaminifolia, Calliopsis cardaminifolia
Cultivar or hybrid
Planting and care
Coreopsis tinctoria thrives in well-drained soil and sunlight. It is an easy-to-grow plant that is drought and cold resistant.
Indoor Sowing: From March to May, between 15 and 20°C, sow in a seed tray and lightly cover the seeds with potting soil. Germination takes place 10 to 15 days after sowing. When your plants have 5 to 6 leaves and are strong enough, transplant them into a pot or directly into the ground if the soil is warm enough. Plan to sow 6 to 8 weeks before the last frost date.
Direct Sowing in the Ground: Between April and June, depending on the region, once all risk of frost has passed. Thin out approximately every 15 to 30 cm to keep the most developed plants.
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.