A preservation formula has been developed for Sitka spruce that proved effective for the retention of needles, while causing some discoloration. The treatment consists of immersing the branches in a treatment solution for a period of up to two weeks, rinsing in water and glycerin for another two weeks and finally air drying. This procedure is similar to those previously reported, but the treatment formula differs substantially. The treatment solution is composed of 500 ml distilled water, 150 ml formalin, 150 ml ethyl alcohol, 100 ml glycerol, 50 ml formic acid, 50 ml propionic acid, 20 g citric acid, 30 g cupric chloride, 20 g cupric sulfate, and 7 g sodium sulfite.