Posted: 03/03/2014 at 16:00
1. Grape hyacinth /muscari
2. One of the ornamental forms of celandine (distinguished from the pesky wild one by the silvery markings on the leaves) . Not sure which one it is, there are several. The ornamental ones are usually not as invasive as the wild one either.
3. Kerria japonica pleniflora
4. Not sure - really familiar but can't come up with a name