This first on is Muscari armeniacum 'Blue Spike'. It is a very commonly available double flowered form.
Next for today is Muscari armeniacum 'Saffier'. This is what I think most people picture when they think of Grape Hyacinths.
Last for today is Muscari azureum. It is also known by the name of Hyacinthella or Hyacinthus azureus. These are also native to Asia Minor and are ealy spring bloomers. They tend to have lighter blue flowers at the top and darker at the bottom. Sometimes it seems to be a gradual transition and other times there is a definite line in the middle of the bloomscape dividing light and dark flowers.
All of these will be happy in most any soil as long as they get full sun, or mostly full sun. We have some in light, dappled shade that also do well.
Tomorrow I'll do the rest of the Muscari. No turtle hunting yesterday because we got rain most of the day - and it's raining again this morning. The gardens really need the water as foliage was starting to look a bit limp as if we were already in a drought. Not a good thing this early in the season.