The Lemon Garden, like the Water Theatre and the Green Theatre, adheres to the baroque layout given to the park of Villa Reale by the Orsetti family in the 1600s. The garden has a long rectangular layout, and is divided into two sections. The lower part has four simple lawned areas, hosting magnificent magnolias with emerald-green leaves. The splendid Fountain of the Three Graces is situated at the southern end, placed in a semicircle of rustic mosaics, blending with Roman busts and the Orsetti family coat of arms.
The higher area is distinguished by a large fish pond, surrounded by a balustrade (measuring 20 by 10 metres), where two statues of giants lie in repose, representing the Arno and Serchio rivers. Providing a backdrop to the elegant pond is a portico made of smooth stone and tuff, with a nymphaeum encircling a marble group depicting Leda and the Swan.
Over 200 citrus plants of various varieties in antique terracotta pots surround the pool and the lawned beds, perfuming the atmosphere with their inimitable fragrance.
John Singer Sargent, celebrated American painter and guest at Villa Reale, painted some beautiful watercolours in this garden during the 1900s.