Sowing Rose Campions deadheads in summer, will it grow next Spring?

Question

Should I keep the deadheads in a container and sow them during winter, or is it ok to throw them on an empty spot during summer in hope it will sprout next Spring?
Thank you in advance!

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Answer 1

By the time they are completely dead, they should have cast their seeds already. Cutting them before this happens can result in immature seeds. Keeping a completely dead flower head MIGHT get you some seeds that have remained, but this is not a guarantee.

This article will help you with their care: https://www.gardeningknowhow.com/ornamental/flowers/rose-campion/rose-campion-care.htm