Peaches have a chilling requirement of a certain number of hours of winter temperatures between 32° to 45° F to break dormancy and induce normal bloom and vegetative growth. If varieties are chosen that have a chilling requirement that is too low, there is a greater probability that they will bloom early and be more subject to frost. If the chilling requirement is too high, they may be very slow to break dormancy and abort fruit. Plant varieties which have the correct chilling requirement for your area.
The map above indicates approximate average winter chill unit accumulation for different regions of Texas.
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