Growing Yellow Birch Seedlings In Polyethylene Bullet Containers

Plastic, bullet-shaped containers 2.5 and 4.5 inches long were suitable for producing healthy and vigorous yellow birch planting stock in the greenhouse. The larger containers favored the growth of taller plants with a better root system. In field trials, roots became established outside the containers during the first year of growth but did not break the plastic casing. After the first winter in the open nearly two-thirds of the seedlings had survived, but only one-third of them were in good condition.