Dallas I have several long time friends that have commercial peach orchards. These trees may need thinning. Thinning in peaches means taking a padded broom handle and tapping the limbs of the tree after the tree has set peaches. There are rules of thumb governing how many peaches on so many inches of limb. If left alone frost may thin some of the blooms and sometimes late frost causes disaster to strike and all the peaches are killed by frost. The tree remains healthy but no peaches to sell. Thinning is an art.