Black Spruce (Picea mariana) - Species Code "SB" Below are recommended stocktypes, followed by coded designations, average height and root collar diameter PRT produces all stocktypes, so please contact your local Customer Support Representative for further options
SB PSB 311 198/55	SB PSB 309A 180/60	SB PSB 310B 160/60	SB PSB 313B 160/65	SB PSB 411 144/90	SB PSB 410 112/80	SB PSB 412A 77/125
4A		4S	4		6S	10S
16 cm	17 cm	18 cm	18 cm	20 cm	20 cm	24 cm
2.2 mm	2.3 mm	2.5 mm	2.6 mm	2.8 mm	3.0 mm	3.5 mm