Plants into your compost heap - keep the compost/soil for next year.

I add some slow release plant food to the 'old' compost and re-use it. As MG says, the bedding plants can go in the compost bin. Sometimes it's worth taking cuttings off a 'special' plant, e.g. Osteospermum.

Same here,too expensive to throw away..just check for Vine Weevil grubs,or other nasties,thet might have overwintered in them,and top up with a bit of new compost,and slow release plant food..I usually tip mine out,to search properly,before refilling and replanting..