Citrus × latifolia – Lime

Citrus × latifolia – Lime

For a potted lime with medium-sized fruit, Citrus × latifolia is the familiar Persian or Tahiti lime type. It has glossy green leaves, scented white flowers and limes with aromatic green rind and juicy acidic flesh.

The fruit is usually picked green for fresh acidity, although mature limes can turn yellow on the tree. Persian lime is usually easier to keep in a pot than Key Lime. It still needs bright light and measured watering in cooler winter spaces or greenhouses.

Persian lime fruit, leaves and pot growth

• Fruit: Medium limes with aromatic rind and juicy acidic flesh.
• Leaves: Glossy evergreen leaves with a clean citrus scent when bruised.
• Growth habit: Woody branching citrus that can be kept compact with pruning.
• Flowers: Scented white citrus flowers that can develop into fruit under strong light.
• Pot growing: A movable lime tree for sun, drainage and frost-free wintering.

Persian lime background and fruit type

Citrus × latifolia is a cultivated hybrid lime. Persian lime and Tahiti lime are common names for this larger acid lime type.

The fruit is larger than Key Lime and usually has a smoother, thinner rind. Many Persian lime selections have fewer thorns, with thorny growth most likely on young or vigorous shoots.

Persian lime care through the year

• Light: Keep it in full sun through the frost-free months. Under cover, choose the brightest position available.
• Water: Water well, then wait until the upper part of the substrate has dried before watering again. In cool winter conditions, the pot dries more slowly.
• Substrate: Use a citrus mix that drains well and stays open after watering. Add mineral components if the mix starts to compact.
• Wintering: Move under protection before nights fall below about 10°C. A bright place around 10–12°C keeps growth slower and watering easier to judge.
• Nutrition: Use citrus fertiliser from spring through early autumn. Micronutrients matter, because potted limes can yellow when iron, magnesium or manganese availability drops.
• Potting: Keep the plant in a drainage pot. Repot gradually once the roots have filled the container.
• Fruit set: Outdoor pollinators usually handle summer flowers. If it blooms under cover, hand-pollinate fresh flowers with a soft brush.
• Pruning: After harvest, remove weak inward growth and shorten long shoots so the plant stays open and easy to move.

Persian lime fruit load, pests and leaf stress

• Brown leaf edges: Review drying wind, salt buildup, irregular watering and heat behind glass.
• Heavy fruit load: Check branch strain and watering consistency. Thin fruit if a young tree is carrying more than the crown can support.
• Yellow leaves after winter: Check root moisture, temperature and feeding. Cold damp substrate can reduce nutrient uptake even when fertiliser is present.
• Pests: Inspect leaf undersides and stems for spider mites, scale, whitefly and mealybugs before moving the plant under winter protection.
• Yellow fruit: Persian limes are often used green; yellow fruit usually means full maturity.

Persian lime peel oils and name

Lime peel, leaves and citrus oils can upset pets if plant material is eaten. Remove fallen fruit, loose leaves and cut stems where pets can reach them, and prune carefully around thorny shoots.

The epithet latifolia means broad-leaved, from Latin words for broad and leaf.