Root pruning during field production

 

Root pruned oaks and other trees develop a more dense root system when root pruned regularly during field production. Root pruning encourages new roots to develop close to the cut root end (see right photo).
Root system of
Cathedral Oak that was not root pruned.
Root system on Cathedral Oak that was root pruned 4 times in the last year of field production.

Root system of Cathedral Oak that was root pruned 8 times in the last 2 years of field production.