Gardening Dictionary by Kiss my Aster

Glauca or Glaucus- Often people think this means blue, it doesn't. It's a waxy covering that you can rub off with yor fingers. Think Hostas.
For example, a Dwarf Alberta Spruce (Picea conica glauca) isn't blue, but it's glaucus.
or in a sentence, "I like my paczki extra glaucus"