Finger lime plants (Citrus australasica) are small, bushy trees native to the Australian rainforests but have since found a home in various climates, especially in California and other Mediterranean-like regions. Known for producing the rare and exquisite fruit called finger limes, these plants are a unique choice for home gardeners and commercial growers alike.

Appearance and Growth Characteristics

Finger lime plants typically grow to about 6–10 feet in height and are known for their dense, thorny branches. The leaves are small, deep green, and give off a subtle citrus scent when crushed. During spring, these plants produce small, fragrant white flowers, which later develop into the elongated finger lime fruit.

Growing Conditions

Finger lime plants thrive in warm, temperate climates with plenty of sunlight and humidity. Here’s what they need to flourish:

• Sunlight: Plant finger limes in full sun to partial shade for optimal growth.
• Soil: These plants prefer well-draining soil, slightly acidic to neutral (pH 6–7), to mimic their natural rainforest habitat.
• Watering: Water finger lime plants regularly but avoid waterlogging, as they are sensitive to root rot.
• Fertilizer: Use a balanced, slow-release fertilizer during the growing season to support healthy growth and fruit production.

With proper care, finger lime plants can be a long-term addition to any garden, yielding fruit for up to 15–20 years.

Container Growing and Indoors

If you’re looking to grow finger limes in a smaller space, they adapt well to containers. Choose a pot at least 18 inches wide, and ensure it has good drainage. Finger lime plants can even be grown indoors if provided with ample light from a sunny window or supplemental grow lights. Containers allow growers in colder climates to bring their plants indoors during winter, extending the plant’s growing season.

Harvesting Finger Limes

Finger limes generally start bearing fruit after 2–3 years when grown from grafted plants. Harvest typically occurs from late summer through early fall. The ripe fruits will feel slightly soft to the touch and should detach easily from the branches. Freshly harvested finger limes can be stored in the refrigerator for up to 3 weeks.

Pest and Disease Management

Though generally hardy, finger lime plants are occasionally affected by pests like aphids, scale, and mites. Use organic insecticidal soap or neem oil to manage pests. Ensure good airflow around the plant to reduce the risk of fungal diseases, and avoid overwatering, as finger lime plants are sensitive to root rot.

Why Grow Finger Limes?

Finger lime plants are a unique addition to any garden or orchard, and they’re relatively low-maintenance once established. Whether grown commercially or for personal enjoyment, these trees yield highly sought-after fruit with exceptional culinary value, making them a profitable choice for growers and a fun, exotic project for home gardeners.