Drying foliage/flowers for arrangements

Conifers like larch that have small cones? I used to collect these locally when (a long time ago) I used to be festive! Cotoneaster?
When is the class? December! You have the whole of October and November to find/worry about this.

I dont want to worry for that long!
I really would like to save my rosehips somehow?

The worst thing was I had a clear out of my shed last Spring - and chucked lots of cones as Id stored for too long   I can collect more of those - but I would love some stems with berries hips and Im not going to find those in Dec.