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Cosmos Cupcakes White Seeds - Cosmos bipinnatus

Cosmos x bipinnatus Cupcakes White
Garden Cosmos, Mexican Aster

3,7/5
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1 reviews

No flower has appeared....This problem is recurrent unfortunately with the seeds of cosmos purchased on the website as I have never encountered this issue with seeds purchased at the garden centre.

Caroline, 21/07/2020

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Cosmos 'Cupcakes White' is an original selection with fused, pure white petals that form graceful cup-shaped blooms, filled with a dainty collarette and golden yellow centre. Voted the RHS Garden Visitors’ Favourite in 2016. The abundant blooms appear all season long on semi-tall plants, ideal for cutting! Easy to grow and effortlessly romantic, Cosmos thrive in light soil in a sunny position.
Flower size
11 cm
Height at maturity
85 cm
Exposure
Sun
Annual / Perennial
Annual
Germination time (days)
12 days
Sowing method
Direct sowing
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Sowing period February to April
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Flowering time June to October
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Description

Cosmos 'Cupcakes White' is an original selection with fused, pure white petals that form graceful cup-shaped blooms, filled with a dainty collarette and golden yellow centre. Voted the RHS Garden Visitors’ Favourite in 2016. The abundant blooms appear all season long on semi-tall plants, ideal for cutting! 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. 'Cupcakes White' is an award-winning variety bred by Thompson & Morgan. It quickly forms semi-tall clumps, 80-90 cm in height and 40 cm wide. Flowering starts in July and lasts until October (or the first frosts). The flower heads measure about 10-12 cm across and are made up of a layer of fused, pure white petals arranged around a dainty collarette and golden central disc. 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.

Cosmos Cupcakes White Seeds - Cosmos bipinnatus in pictures

Cosmos Cupcakes White Seeds - Cosmos bipinnatus (Flowering) Flowering

Flowering

Flower colour white
Flowering time June to October
Inflorescence Flower head
Flower size 11 cm
Bee-friendly Attracts pollinators
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Annual
Foliage colour green
Aromatic? Fragrant foliage when creased

Plant habit

Height at maturity 85 cm
Spread at maturity 40 cm
Growth rate fast

Botanical data

Genus

Cosmos

Species

x bipinnatus

Cultivar

Cupcakes White

Family

Asteraceae

Other common names

Garden Cosmos, Mexican Aster

Origin

Cultivar or hybrid

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Planting and care

Sow Cosmos seeds from March to May, at a depth of 3mm (0.1 in), in fine compost and cover the seeds with a very light sprinkling 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 (2.8 in). Grow them in cooler conditions until the plants are sufficiently developed to be planted outdoors. When all risk of frost has passed, gradually acclimatize the plants to outdoor conditions for 7 to 10 days.

Plant them in full sun, in moist, well-drained soil, spaced 45cm (17.7 in) apart. Pinch the tips of the shoots on each stem when transplanting to encourage branching and the production of numerous flowers. Cosmos prefer a soil pH of 6 to 8.5, which corresponds to their native habitat in the alkaline regions of Central America. They prefer full sun but tolerate partial shade. These plants are drought-resistant once established, they are not very susceptible to diseases but can be targeted by aphids. Spontaneous seedlings are common but not always true to type, without becoming invasive.

Sowing period

Sowing period February to April
Sowing method Direct sowing
Germination time (days) 12 days

Intended location

Suitable for Meadow
Type of use Border, Slope, Vegetable garden
Ease of cultivation Beginner
Exposure Sun
Soil pH Any
Soil moisture Moist soil, light, well-draining
3,7/5
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