I have some around the base of the three trees in my back garden next to the veg plot. These are "naturalised" - in other words I leave them to their own devices.
This year I also have a few pots of Crocuses that I planted in the Autumn. Crocuses are very good bulbs (corms) to plant, because they are small and don't require much depth of soil, so you can put them in small pots and all those little spaces in the garden where nothing much else would fit. And these days they come in a good variety of colours. I bought three packs at £1.99 each - a total of 45 corms.
The stripey yellow "Gipsy Girl" ones (pictured in this post) were the first to flower. Notice that the pack says "Flowers Feb/ March".
Did you spot the pesky little aphid lurking in there?
Hopefully within the next few days I'll have flowering Crocuses all over the place.
What do you do with your potted Crocuses when they have finished flowering? This is what I do: tip them out of their pots, dry them; store them until Late Summer / Early Autumn and then plant them somewhere in the garden. They do tend to lose their vigour a bit, so re-planting them in pots is likely to give you second-class specimens. When they are in the border they probably won't come under such close scrutiny, so their individual quality will not be as important.