Margaret: Something like Calendula, if you don’t want it to sow itself all over your vegetable garden, but you do want to have it, either for edible flowers next year or just for enjoyment, collect the seedheads now or when they formed. Because otherwise, it’s just going to be all...
Calendulatolerates the cold and self-seeds fairly easily. If you already have a patch, let some go to seed in the fall, and they’ll germinate on their own the following spring. Winter-sow them and transplant them as soon as the soil can be worked. Light mulching can save them from ...