Vatican Bitter Orange

(Citrus aurantium 'Fasciata')

Documented by Léo — grown in the ground, USDA zone 8b

Vatican bitter orange (Citrus aurantium 'Fasciata') is a historic ornamental variety of bitter orange, traditionally grown in the Vatican and Roman gardens, famous for its spectacular green-yellow-orange striped fruit. Its tree hardiness reaches 14°F (−10°C), making it suitable for in-ground growing in USDA zone 8a-8b. The tree reaches 7 to 13 ft (2 to 4 m) with a rounded, thorny habit, glossy, often variegated evergreen foliage, and very fragrant white flowers in spring. Its bitter orange fruit with unique green-yellow-orange stripes, medium-sized with thick, rough skin, ripen in winter. Very ornamental but also excellent in marmalade, candied peel, and liqueur. The variety is particularly decorative and historically important in European royal gardens. Graft onto Poncirus trifoliata, plant against a south-facing wall, well-drained soil.

Identity

OriginItaly (Rome)

Genetic originOrnamental cultivar of Citrus aurantium with striped, fasciated fruit

USDA zone8a

Cold hardiness14°F (−10°C)

Fruit cold hardiness27°F (−3°C)

GrowthModerate

Height13 ft (4 m)

HarvestJanuary, February, December

SeedsModerate

UsesLiqueur, Preserves, Sweet cooking

FlavorsBitter, Pronounced bitterness, Highly aromatic

History & Description

Origin

Vatican bitter orange (Citrus aurantium 'Fasciata') is a remarkable ornamental and culinary cultivar of the bitter orange, famous for its fruit with skin striped green and yellow when young, irresistibly evoking the striped uniforms of the Vatican's Swiss Guards, before turning orange and yellow at full maturity with persistent stripes and a distinctive wrinkled texture. This old variety, probably grown for centuries in the papal gardens of Rome, belongs to the group of fasciated bitter oranges, renowned for their exceptional ornamental quality as much as for their culinary qualities. The bitter orange (Citrus aurantium) is itself an ancestral hybrid between Citrus maxima and Citrus reticulata, introduced to the Mediterranean in the 10th century by the Arabs along the Silk Road. Its hardiness of 14°F (−10°C) allows it to be grown in zone 8a gardens.

Tree description

Tree of moderate vigor, reaching 10 to 13 ft (3 to 4 m) in the ground in Mediterranean regions. Dense, dark green, glossy evergreen foliage. Very fragrant white bloom in spring, abundant and very decorative. Balanced, productive habit, moderately vigorous.

Fruit quality

The fruit is especially decorative when young: striped green and yellow like the uniforms of the Vatican's Swiss Guards, it gradually turns orange with persistent yellow stripes at maturity, developing a characteristic wrinkled texture. The skin is bitter and aromatic, the pulp not very juicy and bitter, as is typical of bitter oranges. The harvest takes place from December to February.

Flavor and ornamental interest

Vatican bitter orange is valuable for bitter orange jam in the style of English marmalade, artisanal liqueurs, and pastry preparations. Its very fragrant flowers are harvested for the artisanal distillation of orange blossom water. Its striped fruit is very ornamental at every stage of ripening, making it a sought-after collector's citrus. A majestic and very ornamental tree for Mediterranean and mild Atlantic gardens.