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Cosmos
- Latin name: Cosmos bipinnatus
- Type: Summer flower
- Light conditions: Full sun
- Soil conditions: Ordinary, well-drained, but adaptable
- Other: Annual, does not tolerate frost, attracts pollinators

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Cosmos is a colourful and graceful summer flower that adds lightness and charm to gardens and flower beds. With its fine, feathery leaves and an abundance of flowers, this plant is a popular favourite among gardening enthusiasts.
Cosmos thrives best in well-drained soil of moderate quality. It is relatively adaptable and can be grown in different soil types, including sand, clay and ordinary garden soil. However, the soil should be loose and well-drained to prevent waterlogging, as this can lead to root rot. Adding compost when planting can improve the soil structure and add nutrients.
Cosmos thrives in full sun. It needs at least six hours of direct sunlight a day for optimal flowering. A sunny position promotes strong growth and produces more flowers. It can tolerate light shade, but this can result in stretched stems and fewer flowers. Place cosmos somewhere it can absorb the sun's warmth and light.
Cosmos is not only easy to grow – it also attracts bees, butterflies and other pollinators. With its colourful flowers and fine texture, this plant is an ideal addition to the summer garden.
List of some Varieties of cosmos in Denmark:
- Cosmos bipinnatus 'Sensation': A popular strain known for its large flowers in pink, white and crimson with a yellow centre. A beautiful addition to summer gardens and for cut flowers.
- Cosmos bipinnatus 'Sonata': A compact variety with a rich colour palette ranging from white and pink to deep red. Suitable for both beds and containers.
- Cosmos bipinnatus 'Dazzler': A variety with an intense crimson colour and fine, feathery foliage. Ideal for adding contrast and height in flower beds.
- Cosmos bipinnatus 'Seashells': Characterised by its rolled, tubular petals that look like seashells. Available in various colours, including white, pink and crimson.
- Cosmos bipinnatus 'Purity': A classic white variety with simple, elegant flowers, perfect for mixing into summer bouquets.
This guide is for guidance only. Landscaping and gardening is not an exact science, and a successful result can be affected by many variables, including (but not limited to): soil conditions, location, watering, temperatures, weather, application of fertiliser and mulch, and much more.
