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Cosmos Xanthos Seeds - Cosmos bipinnatus

Cosmos x bipinnatus Xanthos
Garden Cosmos, Mexican Aster

4,5/5
13 reviews
2 reviews
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1 reviews

Surprenant yellow qui viré au blanc, but very beautiful cosmos

Catherine, 11/04/2021

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This plant carries a 6 months recovery warranty

More information

Cosmos 'Xanthos' is an award-winning selection that features unique, soft yellow daisy-like blooms over dark green, ferny foliage. Flowering starts early and continues all season long on compact plants, ideal for borders and containers! Easy to grow and effortlessly romantic, Cosmos thrive in light soil in a sunny position.
Flower size
6 cm
Height at maturity
60 cm
Exposure
Sun
Annual / Perennial
Annual
Germination time (days)
12 days
Sowing method
Direct sowing, Sowing under cover
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Sowing period March to May
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Flowering time June to October
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Description

Cosmos 'Xanthos' is an award-winning selection that features unique, soft yellow daisy-like blooms over dark green, ferny foliage. Flowering starts early and continues all season long on compact plants, ideal for borders and containers! Easy to grow and effortlessly romantic, Cosmos thrive in light soil in a sunny position.

Cosmos bipinnatus is a tender annual plant native to Mexico and the southernmost part of the United States. It belongs to the Asteraceae family alongside Dahlias and daisies, featuring the characteristic inflorescences known as capitulums and very fine, feathery foliage. 'Xanthos' quickly forms well-branched, compact clumps, about 60 cm tall and 40 cm wide. Flowering starts as early as May-June and lasts until October (or the first frosts). The flower heads measure about 5-7 cm across and are made up of a layer of petals arranged around a golden central disc. Flowers are soft yellow with a discreet white eye. Cosmos are a magnet to foraging insects and butterflies, including the monarch butterfly. The finely cut, cloud-like foliage resembles fennel leaves and is delicately scented. Flowers are followed by blackish, spiky seed heads (achenes).

Cosmos is an easy-going, rewarding annual that can single handedly fill a sunny slope, border or flower bed. It is perfect to animate romantic or cottage style gardens. Easy to grow even by beginners, this adorable plant with its feathery green leaves and naive flowers bring light and airiness to heavier blooms such as Dahlias. It combines well with perennial sage, Verbena bonariensis and chrysanthemums until the first frosts. It is particularly useful in new gardens mixed with poppies, love-in-a-mist or cornflowers. Its pretty blooms have a long vase life and are ideal for cutting.

Flowering

Flower colour yellow
Flowering time June to October
Inflorescence Flower head
Flower size 6 cm
Bee-friendly Attracts pollinators

Foliage

Foliage persistence Annual
Foliage colour dark green

Plant habit

Height at maturity 60 cm
Spread at maturity 40 cm
Growth rate fast

Botanical data

Genus

Cosmos

Species

x bipinnatus

Cultivar

Xanthos

Family

Asteraceae

Other common names

Garden Cosmos, Mexican Aster

Origin

Cultivar or hybrid

Product reference821811

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Planting and care

Sow Cosmos seeds from March to May, at a depth of 3mm, in a fine soil and cover the seeds with a very fine pinch of vermiculite. Place the seed tray in a mini-greenhouse at a temperature of 18-25°C or wrap it in a polyethylene bag. Keep the soil moist but not waterlogged. Light promotes germination, which occurs 7 to 15 days after sowing. When the seedlings are large enough to handle, transplant them into individual pots with a diameter of 7cm. Grow them in cooler conditions until the plants are sufficiently developed to be planted outside. When all risk of frost has passed, gradually acclimate the plants to outdoor conditions for 7 to 10 days. Plant them in full sun, in a moist, well-drained soil, spaced 45cm apart. Pinch the tips of the shoots on each stem during transplantation to encourage branching and the production of numerous flowers. Once the frost has passed, Cosmos can also be directly sown in the ground.

Cosmos prefer a soil pH between 6 and 8.5, corresponding to the soil of their native habitat, the alkaline regions of Central America. They prefer full sun but tolerate partial shade. These plants are drought-tolerant once established, they are not prone to diseases but can be targeted by aphids. Spontaneous seedlings are common but not always true, without becoming invasive.

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€7.50 Bag
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€14.50 Each

Sowing period

Sowing period March to May
Sowing method Direct sowing, Sowing under cover
Germination time (days) 12 days

Intended location

Suitable for Meadow
Type of use Border, Container
Ease of cultivation Beginner
Exposure Sun
Soil pH Any
Soil moisture Moist soil, Light, well-draining
4,5/5

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