Australian and New Zealand Gardening: Seed advise please, 3 by chrysies

chrysies wrote:
This is my Japanese Windflower...I have learnt that the seeds should be planted asap after harvesting, but I was wanting to know if the centre is one whole actual seed, or is it a pod containing many seeds? And also, should it be removed from the plant to dry after petals have fallen, or left on plant to dry out naturally? I don't want to harvest the fresh pods too early, only to find that they needed to stay on the plant to mature before being removed. Thanks for any info. Cheers