How to collect cosmos seeds

Enjoyed this year's display of cosmos? In this video, Carol Klein collects the seeds from her favourite cosmos to sow later on.

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
To do
To do

Do not To do in January

Do not To do in February

Do not To do in March

Do not To do in April

Do not To do in May

Do not To do in June

Do not To do in July

Do not To do in August

Do To do in September

Do To do in October

Do To do in November

Do not To do in December

Carol Klein shows you how to collect seeds from cosmos, a stately and vibrant star of her garden at Glebe Cottage. Selecting one of her favourite specimens, she shows you how to cut the seedheads from this half-hardy annual, then store them ready for sowing in spring. When they’re ready, follow our step by step advice on sowing half-hardy annuals like cosmos and nicotiana.