Cosmos: How to grow
Cosmos offer a burst of vibrant and pastel colour and benefit from a long flowering period and distinctive feathery foliage.
Sow seeds from February to April in Gro-Sure Seed & Cutting Compost in the greenhouse or on a kitchen windowsill.
Harden off throughout May and plant out once all risk of frost has passed. Cosmos thrives in a sunny spot with well-drained soil. Incorporate organic matter such as Westland Soil Conditioner first to improve soil structure and boots nutrient levels.
Feed throughout the season with Gro-Sure All Purpose Plant Food.
Dead head regularly to encourage prolonged flowering.