A compact cone of red spruce is less than 5 cm long. It is
hanging down when ripe, as in any other spruce. By looking at
the cones, one can easily tell a spruce from a fir from the distance.
Differently from spruces, all firs have their cones standing up on the branches,
like candles. A fir cone falls apart leaving its bare axis upright on the
branch, while a spruce cone falls down intact.