Hi I have a stand of black walnut trees that my dad and I planted around 40 years ago I trimmed to 16' they are on 12' centers, most are at least 12" to 18" dbh they need thinning but am having issues determining which to leave that might be better veneer trees would like to learn in a class or online. Had tom stadt from msu come and mark trees a couple of times but that was probably 15 years ago. any info would be great. thanks todd there are around 300 total
