The illness is linked to iceberg lettuce sourced from central Mexico and recalled by Taylor Farms.
Delaware recorded its first case of cyclosporiasis this week as the parasitic infection spreads across the country.
There may be other potential sources behind the outbreak.
Farmer Norman Schultz said customers can feel confident about produce grown and harvested at the farm.
The outbreak has sickened at least 1,600 people in five states.
The largest cluster is linked to iceberg lettuce from Taco Bell in five states.