Cosmos bipinnatus ‘Sensation Mix’ is a classic cottage garden annual known for its feathery foliage and tall stems topped with masses of open, daisy-like flowers in shades of soft pink, deep rose, and crisp white. This mix is a favorite for Irish gardens thanks to its tolerance for cooler, damp conditions and its ability to flower reliably through late summer and into early autumn.
Cosmos are easy to grow from seed, even for beginners, and make a lovely addition to wildlife-friendly gardens. Their nectar-rich blooms attract bees, butterflies, and hoverflies, while their long, slender stems make them excellent for cut flower arrangements.
Botanical Name: Cosmos bipinnatus
Type: Annual
Height: 90–120 cm (3–4 ft)
Bloom Time: July to October in Ireland
Flower Colours: Pink, white, rose (mix)
Position: Full sun, light partial shade
Spacing: 30–45 cm
Soil Requirements: Light, free-draining soil (tolerates poor soils)
Irish Growing Tips: Start seeds indoors in April or sow direct outdoors in May after the risk of frost. Performs best in a sheltered, sunny spot but tolerates Irish weather well. Deadhead regularly to extend flowering season.
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