Trees - Spruce Colorado Blue Spruce (picea pungens glauca) Conifer (cone bearing) tree with distinctive blue-green evergreen needles. The tree color can vary from dark green through all shades of blue-green to powderwhite blue. Prefers full sun. Norway Spruces: Norway Spruce (picea abies) compact norway spruce - (picea abies 'Minima') creeping norway spruce - (picea abies 'Procumbens') Norway Spruce "little gem" (Picea abies 'Little Gem') Dwarf Norway Spruce (picea abies pumila) Hedgehog Norway Spruce - (Picea abies 'echiniformis') Alberta Spruce: Dwarf Alberta Spruce - (Picea glauca 'Conica') Birdsnets Spruces Dwarf birdsnest spruce / hedgehog spruce (picea glauca 'Echiniformis') Dense minature globe with blue gray foliage. Birdsnest Spruce - Picea abies "Nidiformis" Serbian Spruce: Serbian Spruce (Picea omorika 'Pimoko')introduced in 1980, is among the smallest of the dwarf forms of this plant. It grows only about an inch & a half a year, forming a foot high, sixteen inch wide domed mound in ten years. As a bonsai with limited resources for its roots & expert pruning, it can remain even smaller. The species has additionally provided weeping forms, skinny upright forms, wide conical forms, prostrate forms, & varieties that are curiously irregular. The spruce needles are themselves miniatures at only one-fourth inch length, densely compact. The needles are grey-green to dark blue-green, having silvery-white stomotal bands. It can make quite a startling contrast alongside a regular dark green or a yellow-green dwarf conifer.It wants rich humusy soil, moist with perfect drainage, & lots of sun, though it can sunburn in particularly lengthy hot days, or windburn in exposed locations during winter.