Where do I store the broom seed pods till the next sowing time when do I sow the seeds next year

It is best to remove the seeds from the dry pods. This is quite easy as they are like peas. Put them in an old envelope with the name written on and then in an old plastic tub in the fridge or a cool dark cupboard. It is important to keep them dry. Why not plant a few now, things sometimes germinate better when fresh. Put a few in a pot of compost and cover them with a little compost. Put the pot in a partly shaded spot in a greenhouse or cold frame (or cool windowsill).