Only one variety of lemon is protected by the IGP certification: the Femminello from Syracuse. The skin is particularly smooth and silky, a clear sign of the quality of this lemon. The plant blooms at least three times a year and the types of lemons have different names depending on which blooming period they come from:
- Primofiore (winter lemon): from 1 October to 14 April;
- Bianchino or Maiolino (spring lemon): from 15 April to 30 June;
- Verdello (summer lemon): from 1 July to 30 September.