Sep 21, Prune bur oak trees during the dormant season only, which is between December and March. They should never be trimmed during the growing season because exposed tissue under the bark will cause insect shrubcleanup.buzzg: Burlington MA.
Jul 04, Bur oak is a very long-lived, hardy tree that also goes by the name mossycup oak. It can develop a massive taproot, as deep as 10 feet. The species does well in prairie habitats, as well as city environments. It is tolerant of drought and requires very little pruning or training. However, doing so can improve a bur Missing: Burlington MA.