Snowdrops

I did this and left them outside after planting.  I waited until just after they had finished flowering before planting them in the garden.  This worked fine for me

Caz

Glad they came to life, they don't always when sold dried. You can usually see a bit of white at the tip as they come through. If you've just got one inch tall leaves you may have to wait til next year. Not sure if they need a spell of cold. They're hardy outdoor plants so they get it anyway. They started coming through here before the cold weather started so they're probably not fussy about that.

Again not sure if they need a cold spell but I see snowdrops sold at GC in pots. I have had a few Spring bulbs sprouting through but I think with the frosts that will slow them down to flower in the Spring.

If it were me I would let them flower in the pots in Spring  and then plant them out in the garden "in the green" after they have flowered

best to plant them out when they are green (when they have finished flowering) they will multiply better.

Relatively cheap in bulk in the green, around Feb/March. If you get single ones they'll seed around quite quickly. Doubles don't but they clump up pretty quickly and can be split up and replanted after flowering. You'll soon have a good patch.