One characteristic of Spruce that is important to note is that they are a thirsty genus/species and require much cooler, more humid conditions than Pines. Although they do require plenty of light, try to avoid exposing them to direct sun during the afternoon in the Summer.
Coniferous Bonsai Species
Bonsai and Tree Species that typically have needles or scale-leaves. Most retain their leaves all year round, although there are some coniferous species such as Swamp Cypress or Larch that will also lose their leaves during the winter. The technical difference is that coniferous trees all bear cones containing seed.