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Description
Citrus Aurantiifolia, commonly known as the Key Lime or Mexican Lime, is a small evergreen tree that belongs to the Rutaceae family. It is native to Southeast Asia and is now cultivated in tropical and subtropical regions worldwide.
The Key Lime is a popular fruit that is widely used in culinary applications, particularly in making pies, marinades, and cocktails. It is also a rich source of vitamin C, antioxidants, and other essential nutrients.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Magnoliopsida |
| Order | Sapindales |
| Family | Rutaceae |
| Genus | Citrus |
Appearance
The Key Lime tree is a small and bushy evergreen that can reach up to 6 meters in height. Its bark is smooth and grayish-brown, while its leaves are ovate, glossy, and dark green. The tree produces small, fragrant, and white flowers that bloom in clusters.
The Key Lime fruit is small, round, and green when unripe, and turns yellow when mature. It has a thin and smooth skin, and its flesh is juicy, acidic, and flavorful. The fruit contains numerous small seeds and is typically 3-4 centimeters in diameter.
Care Guide
The Key Lime tree requires specific care to thrive and produce healthy fruit. Here are some tips on how to care for your Citrus Aurantiifolia:
Water: The Key Lime tree requires regular watering, especially during the growing season. Ensure that the soil is moist but not waterlogged, as overwatering can lead to root rot.
Fertilization: The Key Lime tree requires regular fertilization to promote growth and fruit production. Use a balanced fertilizer every three months during the growing season.
Soil: The Key Lime tree prefers well-draining soil that is rich in organic matter. The soil should have a pH between 6.0 and 7.5.
Sunlight: The Key Lime tree requires full sunlight to grow and produce fruit. Ensure that the tree receives at least six hours of direct sunlight per day.
Hardiness Zones: The Key Lime tree thrives in hardiness zones 9-11. It is sensitive to frost and should be protected during cold weather.
Common Pests & Diseases
The Key Lime tree is susceptible to several pests and diseases, including:
Pests: The most common pests that affect Key Lime trees include aphids, scale insects, and spider mites. These pests can cause leaf discoloration, leaf drop, and reduced fruit production.
Diseases: The most common diseases that affect Key Lime trees include citrus canker, citrus greening, and root rot. These diseases can cause leaf yellowing, fruit drop, and tree decline.
To prevent pests and diseases, ensure that you provide the Key Lime tree with proper care and maintenance, including regular watering, fertilization, and pruning. If you notice any signs of pests or diseases, consult with a professional arborist or horticulturist for proper treatment.
Habitat
The Key Lime is native to Southeast Asia and is now widely cultivated in tropical and subtropical regions worldwide, including Mexico, the Caribbean, and Florida. It grows best in warm and humid conditions and requires well-draining soil and full sunlight to thrive.
Question and Answer
Q: How do I propagate a Key Lime tree?
A: Key Lime trees can be propagated through seed or cuttings. To propagate from seed, remove the seeds from the fruit and plant them in well-draining soil. To propagate from cuttings, take a 6-inch cutting from a healthy tree and plant it in moist soil. Keep the soil moist and warm until the cutting roots.
Q: How often should I prune my Key Lime tree?
A: Key Lime trees require regular pruning to maintain their shape and promote healthy growth. Prune the tree once a year during the dormant season, removing any dead, diseased, or damaged branches.
Q: Can Key Lime trees be grown indoors?
A: Key Lime trees can be grown indoors if they receive adequate sunlight and humidity. They require a warm and bright location, such as a south-facing window, and regular watering and fertilization.
Q: How long does it take for Key Lime trees to produce fruit?
A: Key Lime trees typically begin to produce fruit after 3-5 years of growth. The fruit ripens in 6-9 months, depending on the climate and growing conditions.
Related Plants
- Citrus Limon (Lemon)
- Citrus Sinensis (Orange)
- Citrus Reticulata (Mandarin)
- Citrus Paradisi (Grapefruit)
References
- University of Florida IFAS Extension: Citrus aurantiifolia (Key Lime)
- Morton, J. (1987). “Key Lime”. Fruits of Warm Climates. pp. 211–215.
- USDA NRCS National Plant Data Center: Citrus aurantiifolia (Christm.) Swingle
