Peaches and nectarines always set too much fruit. They
will need to be thinned by hand or the fruit will be
small and of poor quality. You will also avoid limb breakage
by proper fruit thinning. The time to thin varies with
each variety. After the fruit sets on the tree, it will
enlarge to about 1 inch in diameter and then go into
a resting stage not increasing much in size. The resting
period may last a week or a month depending upon the
variety. It is during this resting period that you should
thin the fruit allowing 6 to 8 inches between each one.
If it is a very heavy fruit set, thin the fruit to 10
inches apart on the branch. Focus on damaged fruit first.
Then remove fruit at the end of branches, that may be
weakened by heavy fruit.
to at least 6 to 8 inches between each fruit