Can I transplant outdoors, potted tulips and daffodils, originally purchased from a grocery store florist shop? If so, how?
Bulbs that have been forced into bloom indoors may not perform well in the garden, but you have little to lose by trying. Daffodils, especially may recover after a couple of years and bloom quite nicely in the landscape. Tulips are more likely to just continue to decline.
If you'd like to try transplanting them, keep the pots in a sunny location and watered well until the foliage dies down naturally. (You could place the pots outdoors if temperatures remain above freezing.) After the foliage has died down naturally, you can plant the bulbs at the proper depth in the garden.