Myrtle-leaf orange

The myrtle-leaf orange (Citrus myrtifolia), also commonly referred to as the chinotto, is a distinct species within the Rutaceae family. It is a slow-growing evergreen tree known for its compact size, dense foliage, and ornamental appeal, making it a favorite for both garden landscapes and container gardening.

Originating from Southern China, this plant eventually found its historical and commercial home in the Mediterranean basin, particularly in Italy. Its ability to thrive in diverse environments and its resilience have solidified its status as an important cultivar in the citrus family.

Botanically, it is characterized by its small, lanceolate, myrtle-like leaves which give the plant its scientific name. The tree produces small, round, flattened fruits that are deep orange when fully ripe. Unlike commercial sweet oranges, these fruits are extremely tart and bitter, yet they possess a unique flavor profile that is highly prized.

The agronomic requirements for Citrus myrtifolia involve a well-draining, slightly acidic substrate and consistent sun exposure. While the tree can tolerate some variation, it is sensitive to frost and thrives best in temperate climates. Container-grown specimens require careful water management to prevent root rot, which is common if the soil remains waterlogged.

The primary commercial use of the myrtle-leaf orange is in the beverage industry, where it is the essential ingredient in the popular bitter-sweet carbonated soft drink, Chinotto. Furthermore, its essential oils are extracted for use in high-end perfumery and traditional herbal medicine, thanks to their digestive and aromatic properties.

• Light requirement: Full sun to partial shade.
• Common pests: Aphids, spider mites, and scale insects.
• Winter care: Keep in a protected area if temperatures drop below freezing.
• Propagation: Often grafted onto rootstocks for better vigor.