Can i keep deadheaded Dianthus heads to harvest seeds?
i have a gorgeous, but small, scarlet red dianthus plant and i would love to keep the seeds and grow lots more of these next year. I have been saving all the flower heads after deadheading them for last few weeks but will these dead heads still ripen fully and produce the dark seeds i need for germination? At the mo the seeds are more cream coloured so not ripe Yet.
any advice on where i should store the flower heads (greenhouse or airing cupboard?), when the seeds should be ready to extract etc... would be great