"Flat friendly fir." This mnemonic device reminds us that fir needles are, in some ways, the counterpoint to spruce needles. The needles of fir trees are not pointed, and are therefore soft to the touch. They also tend to grow on either side of the twigs, giving the green growth a flat appearance. These needles tend to be longer than those of spruce trees, and over an inch in the case of the balsam fir. But despite the needle differences, the two trees have many similar uses. The pitch in fir wood makes it for great kindling, and this sappy material by itself can be used as glue. The inner bark can also be used to make flour.