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Cosmos bipinnatus ‘Cosimo Collarette’

Mexican Aster 'Cosimo Collarette', Cosimo series

Cosmos Bipinnatus 'Cosimo Collarette, Mexican Aster Cosimo Collarette, Cosmos Cosimo Collarette, Pink Cosmos

Early flowering, Cosmos bipinnatus ‘Cosimo Collarette’ is a dwarf, bushy, half-hardy annual boasting pretty, bicolored, semi-double flowers, up to 2 in. across (5 cm), varying from soft pink with white stripes to snow-white with pink edges. Blooming for months from early summer to fall, the ravishing blossoms are borne atop sturdy stems and float above the fine, feathery foliage. Fairly pest-free and low maintenance, add this charming plant to the landscape, and you will be rewarded with abundant butterflies. Creating a graceful visual impact in the garden, this dwarf Cosmos selection is perfect for sunny borders or containers.

  • Grows up to 16 in. tall (40 cm) and 12 in. wide (30 cm).
  • Performs best in full sun, in average, moist, well-drained soils.
  • An ideal addition to beds and borders, containers, cottage gardens, prairies and meadows and cutting gardens.
  • keep an eye out for aphids, slugs, and gray molds.
  • Propagate by seeds.
  • Pinching off dead blossoms will promote continuous blooming. If the flower heads remain, the cosmos will self-seed, but will not become a nuisance.
  • Cosmos bipinnatus species is native to Mexico.
  • Find where this species is invasive in the United States.
  • Discover beautiful U.S. native plant alternatives.

Cosmos: Plant Care and Growing Guide


Here are some tips on how to plant and grow cosmos successfully

Requirements

Hardiness 2 - 11
Heat Zones 1 - 12
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Annuals
Plant Family Compositae
Genus Cosmos
Common names Cosmos
Exposure Full Sun
Season of Interest Summer (Early, Mid, Late)
Fall
Height 1' - 2'
(30cm - 60cm)
Spread 10" - 1'
(25cm - 30cm)
Spacing 10" (25cm)
Maintenance Low
Water Needs Average
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Cut Flowers, Showy
Attracts Butterflies, Hummingbirds
Garden Uses Beds And Borders, Patio And Containers
Garden Styles Traditional Garden, Cutting Garden, Informal and Cottage
How Many Plants
Do I Need?
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Alternative Plants to Consider

Cosmos bipinnatus ‘Candy Stripe’
Cosmos bipinnatus ‘Gloria’
Cosmos bipinnatus ‘Dazzler’
Cosmos bipinnatus ‘Daydream’
Cosmos bipinnatus ‘Sonata Carmine’
Cosmos bipinnatus ‘Apricotta’

Recommended Companion Plants

Rudbeckia fulgida var. sullivantii ‘Goldsturm’ (Black-Eyed Susan)
Pennisetum setaceum ‘Rubrum’ (Purple Fountain Grass)
Ageratum houstonianum (Floss Flower)
Lavandula angustifolia ‘Hidcote’ (Lavender)

Find In One of Our Guides or Gardens

Pure White Flowers for a Touch of Elegance in Your Garden
How to Create an Enchanting Butterfly Garden
For the Love of Butterflies: Best Flowers to Attract them to Your Garden
6 Reasons You Should Create a Butterfly Garden
For the Love of Bees: Best Flowers to Attract them to Your Garden
How to Cultivate a Thriving Bee-Friendly Garden
October Birth Flower: What is my Birth Flower?
Companion Planting With Annuals
Best Annual Flowers and Plants for Full Sun
Cosmos Flowers
Native Plant Alternatives to Cosmos bipinnatus (Garden Cosmos)
Plants with Pink Flowers to Add Romance to Your Garden
Cosmos: Plant Care and Growing Guide
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
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Requirements

Hardiness 2 - 11
Heat Zones 1 - 12
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Annuals
Plant Family Compositae
Genus Cosmos
Common names Cosmos
Exposure Full Sun
Season of Interest Summer (Early, Mid, Late)
Fall
Height 1' - 2'
(30cm - 60cm)
Spread 10" - 1'
(25cm - 30cm)
Spacing 10" (25cm)
Maintenance Low
Water Needs Average
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Cut Flowers, Showy
Attracts Butterflies, Hummingbirds
Garden Uses Beds And Borders, Patio And Containers
Garden Styles Traditional Garden, Cutting Garden, Informal and Cottage
How Many Plants
Do I Need?
Explore Great Plant Combination Ideas
Cosmos
Guides with
Cosmos
Not sure which Cosmos to pick?
Compare Now

Gardening Ideas

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