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Citrus hystrix (Kaffir lime)

Citrus hystrix (Kaffir Lime) – Aromatic Citrus for Indoors


Citrus hystrix, commonly known as Kaffir lime or Makrut lime, is a compact tropical citrus shrub prized for its distinctively double-lobed leaves and bumpy, intensely aromatic fruits. It offers both ornamental and culinary value, making it an exceptional addition to bright indoor spaces and kitchen gardens.


Citrus hystrix: Leaf Shape, Fruit Texture and Growth Form

  • Leaf Form: Glossy, dark green, bilobed leaves with a central midrib resembling an hourglass shape.
  • Fruit Appearance: Small, wrinkled limes that ripen from green to yellow; not typically juicy but prized for zest.
  • Growth Habit: Upright, bushy structure with thorny stems and slow growth indoors.
  • Bloom Time: Small white flowers appear sporadically in warm conditions.

Citrus hystrix in its Natural Habitat

Native to tropical Southeast Asia, especially regions of Thailand, Indonesia, and Malaysia, Citrus hystrix grows naturally in humid lowland forests. In its natural environment, it can reach 2–3 m, but indoors it typically stays under 1.5 m. Its origin in monsoon-influenced climates explains its preference for high light, warm temperatures, and steady humidity.


How to Care for Citrus hystrix Indoors

  • Light: Needs 6–8 hours of direct sun per day; supplement with grow lights in winter.
  • Location: Place near a bright, south-facing window with minimal temperature fluctuation.
  • Watering: Let the top 2–3 cm of soil dry before watering; avoid waterlogging.
  • Humidity: Keep at 50–60% humidity; use a pebble tray or humidifier if needed.
  • Temperature: Ideal range is 20–30 °C; avoid cold drafts or temperatures below 12 °C.
  • Soil Mix: Use a well-draining, slightly acidic blend with sand and perlite.
  • Feeding: Apply a balanced citrus fertilizer every 4–6 weeks during active growth.
  • Potting: Repot every 2–3 years or when rootbound, always in a container with drainage.
  • Propagation: Root semi-hardwood cuttings in warm, humid conditions.
  • Semi-Hydro: Can adapt to LECA setups with consistent citrus-specific nutrition.
  • Pruning: Shape regularly to encourage dense growth and remove any dead stems.
  • Fruit Set: Indoors, fruiting requires hand-pollination and strong light levels.

Citrus hystrix: Troubleshooting and Leaf Health

  • Pest Pressure: Common pests include scale insects, aphids, and spider mites—treat early with neem-based sprays.
  • Chlorosis: Yellowing leaves often signal nutrient deficiency or overly alkaline soil.
  • Leaf Drop: Can occur with temperature swings, low light, or underwatering.
  • Browning Edges: Usually caused by low humidity or salt buildup—flush soil as needed.
  • Fungal Spots: Improve airflow and avoid overhead watering to reduce fungal incidence.

Extra Tips for Citrus hystrix Success

  • Rotate the plant monthly to prevent uneven growth toward the light.
  • Clean leaves gently to prevent dust buildup and maintain photosynthesis efficiency.
  • Use bamboo supports if branches get heavy during fruiting cycles.

Etymology of Citrus hystrix

The genus name Citrus is from Latin, historically used for various fragrant trees. The species name hystrix derives from the Greek word for “porcupine” or “bristly,” a nod to the thorny nature of its stems.


Frequently Asked Questions About Citrus hystrix

  • Can I grow Kaffir lime indoors year-round? Yes, if light, warmth, and humidity needs are consistently met.
  • Are the fruits edible? Yes—the zest is highly aromatic and used in Southeast Asian cuisine, though the juice is minimal.
  • How often can I harvest leaves? You can snip mature leaves regularly, but avoid removing more than a third at once.
  • Is this plant safe for pets? Like other citrus plants, it’s mildly toxic if ingested, especially to cats and dogs.
  • Will it fruit without another plant nearby? Yes, it's self-fertile, but hand-pollination indoors can improve yield.

Order Your Citrus hystrix Now! Add bold, fragrant greenery to your home and elevate your cooking with fresh Kaffir lime leaves. Your plant ships well-protected and ready for its new spot in your kitchen or sunroom!


Citrus hystrix (Kaffir lime)

€84.75Price
VAT Included

  • Citrus hystrix is approximately 70 cm tall and comes in a ⌀ 22 cm pot.

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