Alphabetical Plant Listing

Cosmos bipinnatus 'Cosimo Collarette'

Mexican Aster 'Cosimo Collarette', Cosimo series


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

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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 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)
Water Needs Average
Maintenance Low
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 Cutting Garden, Informal and Cottage, Traditional Garden

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Great Plant Combination Ideas with Cosmos

Guides with Cosmos


* Picture is courtesy of Fleuroselect

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.


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 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)
Water Needs Average
Maintenance Low
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 Cutting Garden, Informal and Cottage, Traditional Garden

Great Plant Combination Ideas with Cosmos

Guides with Cosmos

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Cosmos bipinnatus 'Cosimo Collarette'

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