Photo de Cosmos 'Xanthos'. La couleur caractéristique est : jaune. Le visuel permet d'observer les contours, les teintes et la disposition des éléments présentés. Les détails de forme et les contrastes donnent un aperçu de l'apparence de cette plante ou de sa récolte. Cette photographie accompagne la variété nommée afin de l'identifier dans la sélection de semences.
Non-organic seeds, Treated seeds, open-pollinated variety, coated seeds Asteraceae

Ornamental flowers seeds

Xanthos cosmos (Cosmos bipinnatus)

Product code : 60-5652-010

Xanthos cosmos has confirmed characteristics that help you plan its placement and cultivation. Xanthos cosmos is an ornamental flowers variety offered as seed for gardeners who want clear, practical product information. Confirmed details include maturity:, height: 60 cm, spread:, colour: yellow. The packet contains approximately 50 bare seeds, and the formulation is non-organic seeds, treated seeds, open-pollinated variety, coated seeds. For best results, follow the sowing, light, and spacing information associated with this variety. You can adjust care to your soil, weather, and observed growth without exceeding the plant’s actual needs. Xanthos This cosmos adds a new colour to the compact Cosmos range.
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Detailed plant guide
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Quantity
Approximately 50 bare seeds per packet
Exposure
Full sun or light partial shade
Life cycle
Annual

Discover the plant

Common nameXanthos cosmos
FamilyAsteraceae
GenusCosmos
Speciesbipinnatus
CultivarXanthos
TypeNon-organic seeds, Treated seeds, open-pollinated variety, coated seeds
Botanical nameCosmos bipinnatus

Xanthos cosmos (Cosmos bipinnatus) Xanthos cosmos is an ornamental flowers variety offered as seed for gardeners who want clear, practical product information. Confirmed details include maturity:, height: 60 cm, spread:, colour: yellow. You can adjust care to your soil, weather, and observed growth without exceeding the plant’s actual needs. Xanthos This cosmos adds a new colour to the compact Cosmos range. It produces 6 cm stunning soft yellow flowers./uni00A0 Very floriferous, plants are dwarf, uniform and well branched. Measured care based on the plant’s condition generally supports better balance than unnecessary routine treatments.

The packet contains approximately 50 bare seeds, and the formulation is non-organic seeds, treated seeds, open-pollinated variety, coated seeds. For best results, follow the sowing, light, and spacing information associated with this variety. It is recommended to remove only damaged material while retaining healthy foliage needed for continued growth. Results may vary with weather, sowing date, soil quality, and the number of hours of useful light each day. This approach helps gardeners enjoy the variety’s confirmed qualities without adding more maintenance than the plant requires. For best results, check the growing medium before watering and adjust frequency to the actual conditions around the plant.

You can review foliage and new growth each week to notice water stress, slowed development, or damage at an early stage. Good air movement and spacing that follows the product information support steady development throughout the growing season. Gradual hardening helps reduce transplant stress when seedlings have been started indoors before moving into the garden. The information printed on the packet remains the reference for depth, temperature, and timing associated with this seed lot. It is best to adapt care to your garden’s microclimate instead of following a fixed watering schedule in every situation.

Photo de Cosmos 'Xanthos'. La couleur caractéristique est : jaune. Le visuel permet d'observer les contours, les teintes et la disposition des éléments présentés. Les détails de forme et les contrastes donnent un aperçu de l'apparence de cette plante ou de sa récolte. Cette photographie accompagne la variété nommée afin de l'identifier dans la sélection de semences.

Sowing guide

It all startswith a seed.

Sowing depth

Cover lightly

Spacing / density

Space approximately 25 × 25 cm according to Fleuroselect

Germination temperature

16 to 18°C according to W.H. Perron; Fleuroselect gives 18°C

Germination time

5 to 7 days

Sowing period

Indoors approximately 4 weeks before planting, or direct sow outdoors after the last frost

Propagation

Seed

Growing method

For best results with Xanthos cosmos, follow the confirmed sowing information and observe growth at each stage. Xanthos cosmos is an ornamental flowers variety offered as seed for gardeners who want clear, practical product information. Confirmed details include maturity:, height: 60 cm, spread:, colour: yellow. The packet contains approximately 50 bare seeds, and the formulation is non-organic seeds, treated seeds, open-pollinated variety, coated seeds. For best results, follow the sowing, light, and spacing information associated with this variety. You can adjust care to your soil, weather, and observed growth without exceeding the plant’s actual needs. Xanthos This cosmos adds a new colour to the compact Cosmos range. It produces 6 cm stunning soft yellow flowers./uni00A0 Very floriferous, plants are dwarf, uniform and well branched. Growth is worth checking after major changes in temperature, light exposure, rainfall, or watering frequency. You can keep the labelled packet until harvest or flowering so the variety details remain easy to consult. Measured care based on the plant’s condition generally supports better balance than unnecessary routine treatments. For containers, drainage and soil volume directly influence moisture stability around the roots and the frequency of watering.

Soil and care

The right care,at the right time.

Soil pH

Light, dry to moderately moist, well-drained soil

Minimum temperature

Frost tender during annual production

Care level

Easy

Watering

For Xanthos cosmos, check soil moisture before watering and adjust frequency to weather and observed growth. Xanthos cosmos is an ornamental flowers variety offered as seed for gardeners who want clear, practical product information. Confirmed details include maturity:, height: 60 cm, spread:, colour: yellow. The packet contains approximately 50 bare seeds, and the formulation is non-organic seeds, treated seeds, open-pollinated variety, coated seeds.

Soil type

This variety prefers soil or growing medium that follows the drainage and texture information published for Xanthos cosmos. Xanthos cosmos is an ornamental flowers variety offered as seed for gardeners who want clear, practical product information. Confirmed details include maturity:, height: 60 cm, spread:, colour: yellow. The packet contains approximately 50 bare seeds, and the formulation is non-organic seeds, treated seeds, open-pollinated variety, coated seeds.

Fertilization

Fertilization for Xanthos cosmos can remain moderate and be adjusted to soil fertility and observed vigour. Xanthos cosmos is an ornamental flowers variety offered as seed for gardeners who want clear, practical product information. Confirmed details include maturity:, height: 60 cm, spread:, colour: yellow. The packet contains approximately 50 bare seeds, and the formulation is non-organic seeds, treated seeds, open-pollinated variety, coated seeds.

Moisture

Consistent without saturation

Seasonal care

Seasonal care for Xanthos cosmos relies on regular observation, measured intervention, and respect for its growth cycle. Xanthos cosmos is an ornamental flowers variety offered as seed for gardeners who want clear, practical product information. Confirmed details include maturity:, height: 60 cm, spread:, colour: yellow. The packet contains approximately 50 bare seeds, and the formulation is non-organic seeds, treated seeds, open-pollinated variety, coated seeds. For best results, follow the sowing, light, and spacing information associated with this variety. You can adjust care to your soil, weather, and observed growth without exceeding the plant’s actual needs. Xanthos This cosmos adds a new colour to the compact Cosmos range. It produces 6 cm stunning soft yellow flowers./uni00A0 Very floriferous, plants are dwarf, uniform and well branched. Growth is worth checking after major changes in temperature, light exposure, rainfall, or watering frequency. You can keep the labelled packet until harvest or flowering so the variety details remain easy to consult. Measured care based on the plant’s condition generally supports better balance than unnecessary routine treatments. For containers, drainage and soil volume directly influence moisture stability around the roots and the frequency of watering. In the garden, an accessible position makes observation, occasional watering, harvesting, and timely maintenance easier. It is recommended to remove only damaged material while retaining healthy foliage needed for continued growth.

Container growing

A garden,within reach.

Recommended pot size

Container at least 30 cm wide with drainage
Xanthos cosmos can be considered for a container when volume, drainage, and light match the expected growth. Xanthos cosmos is an ornamental flowers variety offered as seed for gardeners who want clear, practical product information. Confirmed details include maturity:, height: 60 cm, spread:, colour: yellow. The packet contains approximately 50 bare seeds, and the formulation is non-organic seeds, treated seeds, open-pollinated variety, coated seeds. For best results, follow the sowing, light, and spacing information associated with this variety. You can adjust care to your soil, weather, and observed growth without exceeding the plant’s actual needs. Xanthos This cosmos adds a new colour to the compact Cosmos range. It produces 6 cm stunning soft yellow flowers./uni00A0 Very floriferous, plants are dwarf, uniform and well branched. Growth is worth checking after major changes in temperature, light exposure, rainfall, or watering frequency. You can keep the labelled packet until harvest or flowering so the variety details remain easy to consult. Measured care based on the plant’s condition generally supports better balance than unnecessary routine treatments. For containers, drainage and soil volume directly influence moisture stability around the roots and the frequency of watering.
Photo de Cosmos 'Xanthos'. La couleur caractéristique est : jaune. Le visuel permet d'observer les contours, les teintes et la disposition des éléments présentés. Les détails de forme et les contrastes donnent un aperçu de l'apparence de cette plante ou de sa récolte. Cette photographie accompagne la variété nommée afin de l'identifier dans la sélection de semences.

Bloom and dimensions

Its place,in your garden.

Mature height

60 cm (23.6 in)

Width / spread

40 to 45 cm (15.7 to 17.7 in)

Flower color

Unique soft yellow

Foliage color

Green

Foliage type

Green foliage

Growth rate

Moderate

Growth habit

Dwarf, uniform, upright, and well branched

Fragrance

No particular fragrance confirmed

Bloom period

Xanthos is a compact cosmos awarded a Fleuroselect Gold Medal in 2016. It bears single soft-yellow flowers approximately 6 cm across on a uniform, upright, well-branched plant. W.H. Perron gives 10 to 12 weeks to maturity, while Fleuroselect gives approximately 70 days to flowering. Bloom extends from late June through September depending on conditions. Remove spent flowers regularly to encourage new buds and keep the plant tidy.

Days to maturity

10 to 12 weeks according to W.H. Perron; approximately 70 days to flowering according to Fleuroselect
Photo de Cosmos 'Xanthos'. La couleur caractéristique est : jaune. Le visuel permet d'observer les contours, les teintes et la disposition des éléments présentés. Les détails de forme et les contrastes donnent un aperçu de l'apparence de cette plante ou de sa récolte. Cette photographie accompagne la variété nommée afin de l'identifier dans la sélection de semences.

Garden associations

In goodcompany.

Companion plants

Published companion information for Xanthos cosmos includes Premier cosmos bipinnatus à fleurs entièrement doubles, Rose Bonbon produit des fleurs rose vif rappelant une rose et a reçu une mention Fleuroselect. Xanthos cosmos is an ornamental flowers variety offered as seed for gardeners who want clear, practical product information. Confirmed details include maturity:, height: 60 cm, spread:, colour: yellow. The packet contains approximately 50 bare seeds, and the formulation is non-organic seeds, treated seeds, open-pollinated variety, coated seeds. For best results, follow the sowing, light, and spacing information associated with this variety.

Frequently asked questions

Your questions,answered.

When should Xanthos cosmos be sown?
Sowing time for Xanthos cosmos depends on the confirmed packet information, the last frost date, and your region. Xanthos cosmos is an ornamental flowers variety offered as seed for gardeners who want clear, practical product information. Confirmed details include maturity:, height: 60 cm, spread:, colour: yellow. The packet contains approximately 50 bare seeds, and the formulation is non-organic seeds, treated seeds, open-pollinated variety, coated seeds. For best results, follow the sowing, light, and spacing information associated with this variety. You can adjust care to your soil, weather, and observed growth without exceeding the plant’s actual needs. Xanthos This cosmos adds a new colour to the compact Cosmos range.
Which light exposure suits Xanthos cosmos?
Light exposure for Xanthos cosmos should follow the published variety information and the light actually available in your garden. Xanthos cosmos is an ornamental flowers variety offered as seed for gardeners who want clear, practical product information. Confirmed details include maturity:, height: 60 cm, spread:, colour: yellow. The packet contains approximately 50 bare seeds, and the formulation is non-organic seeds, treated seeds, open-pollinated variety, coated seeds. For best results, follow the sowing, light, and spacing information associated with this variety. You can adjust care to your soil, weather, and observed growth without exceeding the plant’s actual needs. Xanthos This cosmos adds a new colour to the compact Cosmos range.
How should this cosmos be grown and harvested for bouquets?
Plant Xanthos in full sun in ordinary to sandy, light, well-drained soil. Light partial shade is possible, but sun encourages strong stems and abundant flowering. Water regularly during establishment, then whenever the surface dries; avoid standing water and fertilizer excessively rich in nitrogen. The plant reaches approximately 60 to 90 cm according to W.H. Perron and may spread 60 cm. Protect it from wind or use horizontal support when necessary. For bouquets, cut when petals have begun opening but are not yet fully flattened and place stems immediately in water. Removing spent flowers regularly maintains production and extends the flowering display through September while also limiting uncontrolled self-sowing.
Is Xanthos cosmos safe for pets?
The pet_friendly field is marked FALSE as a precaution because no official veterinary reference specific to Cosmos bipinnatus Xanthos was found among the sources consulted. This does not mean a particular toxicity has been demonstrated: toxicite remains FALSE, and W.H. Perron even documents Cosmos species flowers as edible decoration for people. It means only that available evidence is not strong enough to promise compatibility with every animal. Keep the packet and cultivation products out of reach and prevent repeated grazing. If a dog, cat, or other animal consumes a large amount or develops vomiting, diarrhea, lethargy, or irritation, contact a veterinarian and provide the name Cosmos bipinnatus ‘Xanthos’ along with every product applied during cultivation.
When can you enjoy the harvest or flowering of Xanthos cosmos?
Xanthos cosmos is enjoyed during the flowering or decorative development period indicated for this variety. Xanthos cosmos is an ornamental flowers variety offered as seed for gardeners who want clear, practical product information. Confirmed details include maturity:, height: 60 cm, spread:, colour: yellow. The packet contains approximately 50 bare seeds, and the formulation is non-organic seeds, treated seeds, open-pollinated variety, coated seeds. For best results, follow the sowing, light, and spacing information associated with this variety. You can adjust care to your soil, weather, and observed growth without exceeding the plant’s actual needs. Xanthos This cosmos adds a new colour to the compact Cosmos range.

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