Climatologist David Stooksbury said temperatures below 32 degrees could destroy peach and blueberry buds.
"Typically, we see the peach trees and blueberries blooming in mid- to late March, so that is the concern," he said. "We're still in that time of the year that we have greater than a 50-50 chance of a killing freeze."
December and January were so cold that many plants exceeded the chill hours they need, and recent temperatures in the 60s and 70s could make those plants start budding weeks earlier than normal, Stooksbury said.
Stooksbury said Georgia's peach, blueberry and apple crops were destroyed in April 2007 when record-breaking cold caused a harsh freeze right before Easter.
If the weather only barely hits 32 degrees or below for a short time, crops like blueberries and peaches should be fine, said Pam Knox, the assistant state climatologist.
"If it just barely sneaks down to that level and sneaks back up, it's probably not going to be a killing frost," she said.
National Weather Service meteorologist Robert Garcia said an extended cold spell is unlikely, but there's no guarantee.
"You can't ever rule out a late freeze, especially in Georgia," he said.
While it's not practical for commercial farmers, gardeners can protect small blueberry plants by covering them with buckets and drape blankets over larger bushes, said Oconee County Extension Agent Henry Hibbs.