PlantBetter

Lime Tree

Citrus aurantiifolia

Lime trees are small evergreen citrus trees prized for their tart, aromatic fruits that are essential in many cuisines. They thrive in warm, sunny conditions.

Lime Tree (Citrus aurantiifolia)
Scientific name
Citrus aurantiifolia
Family
Rutaceae
Also known as
Key Lime, Persian Lime
Category
Vegetables, Fruits & Herbs
Care difficulty
Moderate
Pet safety
Toxic to pets

How to care for lime tree

  • Light: Lime trees need full sun, ideally 8-12 hours of direct sunlight daily, to produce abundant fruit.
  • Water: Water thoroughly when the top 2-3 inches of soil are dry, ensuring good drainage to prevent root rot.
  • Soil: Plant in well-draining, slightly acidic soil, rich in organic matter, with a pH of 6.0-7.0.
  • Temperature: Limes are very sensitive to cold and thrive in warm temperatures above 60°F (15°C), requiring frost protection.
  • Humidity: They prefer moderate to high humidity; consider misting indoors or using a pebble tray.
  • Fertilizer: Use a specialized citrus fertilizer 3-4 times per year, especially during active growth and fruiting.
  • Propagation: Lime trees are often propagated by grafting onto disease-resistant rootstock, or by air layering.

Is lime tree toxic to pets?

Not pet-safe. The essential oils (limonene and linalool) in the plant are toxic to cats and dogs, causing symptoms like vomiting, diarrhea, and depression if ingested. See our guide to toxic plants for cats and dogs.

Common problems

  • Scale insects or spider mites: Treat with horticultural oil or insecticidal soap, ensuring thorough coverage, especially on undersides of leaves.
  • Yellowing leaves (chlorosis): Check for nutrient deficiencies (e.g., iron, zinc) or improper soil pH; apply appropriate amendments or fertilizer.

Did you know?

Key limes are smaller, more aromatic, and have more seeds than common Persian limes.

Let PlantBetter help

Snap a photo with PlantBetter to confirm your plant is a lime tree, spot problems early and get care reminders tailored to your home.

Get the PlantBetter app · More plant guides

More vegetables, fruits & herbs