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Annual flower
Asteraceae
Cosmos 'Bright Lights' (Cosmos sulphureus)
Product code : JAREC-0067
The organic ‘Bright Light’ cosmos is a flamboyant annual that instantly transforms the garden into a bright summer stage, thanks to its vibrant flowers in warm shades of orange and yellow. Easy to grow and remarkably generous, it thrives effortlessly even in drier conditions or in modest soils, making it a reassuring choice for many gardeners. Its airy habit and abundant flowering create a natural and lively effect in beds, borders, and country-style arrangements. Highly appreciated by butterflies, bees, and other pollinators, it brings constant activity to the garden throughout the summer.
- Quantity
- Approximately 50 seeds
- Exposure
- Sun
- Life cycle
- Annual
Discover the plant
Common nameCosmos 'Bright Lights'; Sulphur cosmos
FamilyAsteraceae
GenusCosmos
Speciessulfureous
CultivarBright Lights
TypeAnnual flower
Botanical nameCosmos sulphureus
Reproducible seedsYes
Cosmos 'Bright Light' organic (Cosmos sulphureus) , offered by Les jardins de l'Écoumene
Cosmos 'Bright Light' is a vibrant annual, perfect for brightening up gardens with its vibrant orange and yellow flowers. Easy to grow and very hardy, it adapts to a variety of conditions including poor soils, drought and heat. Plants grow to around 1 metre in height, with a spread of 30-50cm, and produce an abundance of flowers throughout the summer, ideal for beds, borders and bouquets. Attracting butterflies, birds and pollinators, this variety adds life and colour to any green space.
Latin name : Cosmos sulphureus
Maturity : Annual
Germination : 7 to 10 days
Sowing temperature : 18 to 22°C
Plant height : Approximately 1 meter
Spread : 30 to 50 cm
Flower color : Bright orange and yellow
Quantity per pack : Approximately 50 seeds
Formulation : Organic
Use : Massifs, borders, bouquets of flowers, pollination
Companion plants : Zinnias, marigolds, sunflowers
Enemy plants : No particular enemies known
Cultivation method:
Sow directly in the ground after the last frost or start indoors 4-6 weeks before the last frost. Plant seeds 1/4-3/4 inch deep in well-drained soil, spacing plants 12-20 inches apart. Place in full sun to maximize flowering.
This variety tolerates heat and poor soils well, but moderate watering is recommended to maintain continuous blooms. If plants become too tall or heavy, light staking may be necessary to support the flower stems. Deadhead spent flowers regularly to encourage new blooms throughout the season.
An explosion of color for the garden!
Cosmos ' Bright Light' is a perfect option for adding a bright and cheerful touch to your beds and borders. Hardy and easy to grow, it blends harmoniously into any garden and attracts beneficial wildlife, transforming your outdoor spaces into a haven of life and beauty.
Sowing guide
It all startswith a seed.
Sowing depth
0.5 to 1 cm (0.2 to 0.4 in)
Germination temperature
18 to 22°C (64 to 72°F)
Germination time
7 to 10 days
Sowing period
May to June
Propagation
Sowing
Growing method
Recommended sowing period: May to June. The recommended sowing depth is 0.5 to 1 cm (0.2 to 0.4 in). Germination usually takes 7 to 10 days. For germination, maintain the soil at 18 to 22 °C (64 to 72 °F). Transplant young flowers when their true leaves have developed and their roots hold the root ball. Handle seedlings gently and avoid compressing the stem. Under lighting, gradually space out the containers so that the foliage does not overlap. Acclimatization then prepares the plants for sun, wind, and temperature variations. Planting out occurs when conditions match their hardiness. Observe the succession of buds, open flowers, and faded parts to choose appropriate interventions. A cut should preserve the shoots that will flower next. On tall-stemmed plants, check supports after a windy period. Light pruning can maintain the shape without making it sparse. Adapt end-of-season care to the plant's cycle: annuals and perennials do not require the same winter preparation. Choose between prolonging flowering and collecting seeds from a few stems.
Soil and care
The right care,at the right time.
Care level
Regular during establishment, then adapted to growing conditions
Watering
Moderate
Soil type
Prepare well-drained soil. Transplant young flowers once their true leaves have developed and their roots hold the soil ball. Handle the seedlings gently and avoid compressing the stem. Under lights, gradually space out the containers so that the foliage does not overlap. Acclimatization then prepares the plants for sun, wind, and temperature variations.
Fertilization
Fertilisation supports growth and takes into account nutrients already present in the soil or potting mix. Use mature compost or a fertilizer suited to the crop, following the dosage instructions. Avoid using too many products, especially in a container where roots occupy a limited volume. Water as needed after application and observe foliage development before re-fertilizing.
Moisture
Keep the soil moist during germination, without waterlogging; then adjust to the crop.
Seasonal care
Transplant young flowers when their true leaves have developed and their roots hold the root ball together. Gently handle the seedlings and avoid compressing the stem. Under lighting, progressively space out the containers so that the foliage does not overlap. Acclimatization then prepares the plants for sun, wind, and temperature variations. Planting out is done when conditions match their hardiness. Observe the succession of buds, open flowers, and faded parts to choose useful interventions. A cut should preserve the shoots that will flower next. For tall-stemmed plants, check their supports after a windy period. Light pruning helps maintain the silhouette without making it bare. Adapt the end of the season to the plant's cycle: annuals and perennials do not require the same preparation for winter. Choose between prolonging flowering and keeping seeds on a few stems. Removing faded flowers is suitable for many annuals, while dried capsules and inflorescences can have decorative interest. Keep plants identified when they no longer bear flowers and remove self-sown seedlings that block a path. The organic Cosmos 'Bright Light' is a flamboyant annual that instantly transforms the garden into a bright summer scene, thanks to its vibrant flowers in warm shades of orange and yellow.
Container growing
A garden,within reach.
Recommended pot size
Stable, pierced container, wide enough for the plant to spread out, and deep enough for its roots
Choose this exposure: full sun. Reserve this spacing around the plant: 30 to 50 cm (12 to 20 in). A floral container arrangement must allow space for each plant to grow. Place upright forms where they remain visible and allow trailing stems to occupy the edge when present. Ensure that the combined plants share the desired exposure and moisture. After a few weeks, observe the areas that are becoming denser and only remove damaged parts or stems that hinder the balance of the composition. The organic Cosmos 'Bright Light' is a flamboyant annual that instantly transforms the garden into a bright summer scene, thanks to its vibrant flowers in warm shades of orange and yellow. Easy to grow and remarkably generous, it thrives effortlessly even in drier conditions or modest soils, making it a reassuring choice for many gardeners. Its airy habit and abundant flowering create a natural and lively effect in beds, borders, and cottage-style arrangements. Highly appreciated by butterflies, bees, and other pollinators, it brings constant animation to the garden throughout the summer.
Bloom and dimensions
Its place,in your garden.
Mature height
1 m (3 ft)
Width / spread
12 to 20 in. (30 to 50 cm)
Foliage type
Seasonal foliage
Bloom period
July to October
Harvest
60 days after sowing
Garden associations
In goodcompany.
Companion plants
In a diversified plantation, you can reserve neighboring sections for these plants: zinnia, marigold, sunflower. The association here serves to organize space and harvests. Respect the height, light, and water needs of each plant, without crowding the foliage. Maintain an aisle for watering and picking, then remove finished crops to free up space. This organization facilitates maintenance without promising protection against pests. Draw the composition taking into account the adult size and the distance from which the flowers will be observed.
Frequently asked questions
Your questions,answered.
How to successfully sow Cosmos 'Bright Lights'?
Recommended sowing period: May to June. The recommended depth is 0.5 to 1 cm (0.2 to 0.4 in). Germination usually takes 7 to 10 days. For germination, maintain the soil temperature at 18 to 22 °C (64 to 72 °F). Transplant the young flowers when their true leaves have developed and their roots hold the soil ball. Handle the seedlings gently and avoid compressing the stem. Under grow lights, progressively space out the containers to prevent foliage from overlapping. Acclimatization then prepares the plants for sun, wind, and temperature variations.
Can Cosmos 'Bright Lights' be grown in pots?
Choose this exposure: full sun. Reserve this spread around the plant: 30 to 50 cm (12 to 20 in.). A floral container arrangement must allow room for the growth of each plant. Place upright forms where they remain visible and allow trailing stems to occupy the edge when present. Verify that the plants combined share the desired exposure and humidity. After a few weeks, observe the areas that are densifying and remove only damaged parts or stems that hinder the composition's balance. The organic Cosmos 'Bright Light' is a flamboyant annual that instantly transforms the garden into a bright summer scene, thanks to its vibrant flowers in warm shades of orange and yellow.
How to care for Cosmos ‘Bright Lights’ during the season?
Choose between extending flowering and keeping seeds on a few stems. Removing spent flowers is suitable for many annuals, while dried seed pods and inflorescences can have decorative appeal. Keep plants identified when they no longer have flowers and remove self-seeded plants that are blocking a path. Observe the succession of buds, open flowers, and faded parts to choose the most useful interventions. A cut should preserve the shoots that will flower next. For tall-stemmed plants, check their supports after a windy spell. A light trim helps maintain the plant's shape without stripping it bare.
What sets Cosmos ‘Bright Lights’ apart in the garden?
The 'Bright Light' organic cosmos is a flamboyant annual that instantly transforms the garden into a bright summer scene, thanks to its vibrant flowers in warm shades of orange and yellow. Easy to grow and remarkably generous, it thrives effortlessly even in drier conditions or in modest soils, making it a reassuring choice for many gardeners. Its airy habit and abundant flowering create a natural and lively effect in beds, borders, and country-style arrangements. Highly appreciated by butterflies, bees, and other pollinators, it brings constant activity to the garden throughout the summer.
How to organize a planting of Cosmos 'Bright Lights'?
Draw the composition taking into account the adult habit and the distance from which the flowers will be observed. Small blossoms benefit from being closer to a path, while a tall silhouette can serve as a landmark at the back of a bed. Repeat a few plants of the same variety to make the color legible. Keep access for cutting and avoid planting clumps too closely just to fill the space immediately. Observe the succession of buds, open flowers, and faded parts to choose useful interventions. A cut should preserve shoots that will flower subsequently. For tall-stemmed plants, check their supports after a windy period.
Wildlife and pets
Life,around your plants.
Supporting wildlife
Flowers can host pollinating insects during the season. Plant several in a sunny area accessible to visitors, and avoid treating open blooms. Keep some of the flowers in the garden if you also cut stems for bouquets.
For a great start to your seeds
The right extras.Right here.
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