Citrus hystrix (Kaffir Lime)
Citrus hystrix, commonly known as Kaffir Lime, is an evergreen citrus tree valued for its highly aromatic leaves and distinctive fruit. It is widely used in edible gardens, courtyards, and container planting where both ornamental appeal and culinary use are desired.
Its glossy foliage and compact growth make it a versatile addition to both productive and decorative landscapes.
Key Specifications
Botanical name: Citrus hystrix
Common name: Kaffir Lime, Makrut Lime
Plant type: Evergreen fruiting tree
Mature height: 2 to 4 metres
Mature width: 1.5 to 3 metres
Growth rate: Moderate
Time to maturity: Approximately 2 to 4 years
Growth Habit and Structure
Citrus hystrix forms a dense, bushy tree with a naturally rounded habit.
Well-branched and compact
Can be maintained as a shrub or small tree
Creates a full, leafy canopy
Its manageable size makes it suitable for a range of planting styles.
Foliage and Appearance
The foliage is the defining feature of this plant.
Leaves are:
Distinctive double-lobed shape
Glossy deep green
Highly aromatic when crushed
The leaves are widely used in cooking and add both visual and sensory appeal.
Growth and Establishment
Citrus hystrix establishes steadily and becomes productive over time.
Early stage:
Focuses on root development and structural growth
1–2 years:
Noticeable increase in size and branching
2–4 years:
Reaches mature size with regular leaf and fruit production
Its growth allows for easy shaping and maintenance.
Light Requirements
Performs best in full sun.
Full sun:
Encourages strong growth, flowering, and leaf production
Ideal for open, well-lit positions.
Watering Requirements
Responds well to consistent watering.
During establishment:
Water regularly to support root development
Once established:
Water weekly or as needed depending on conditions
In warmer periods:
Additional watering supports healthy growth
Consistent moisture promotes lush foliage and productivity.
Soil Preferences
Performs best in well-drained soil enriched with organic matter.
Suitable for:
Loam soils
Sandy soils with added organic matter
High-quality citrus potting mix
Well-prepared soil supports optimal growth.
Pruning and Maintenance
Easy to manage and responsive to pruning.
Light pruning maintains shape and encourages branching
Can be shaped as a shrub or small tree
Prune to improve structure and access
Maintains a neat and productive form.
Fertilising
Benefits from regular feeding.
Apply a citrus-specific fertiliser during the growing season
Organic mulch improves soil condition
Feeding supports healthy foliage and growth.
Flowering and Fruit
Produces fragrant flowers followed by distinctive fruit.
Flowers are:
Small, white, and highly fragrant
Fruit characteristics:
Rough, bumpy skin
Deep green maturing to yellow-green
Highly aromatic rind
Both leaves and fruit are widely used in cooking.
Spacing Guide
For planting:
Plant 2 to 3 metres apart
Allows for full canopy development
Suitable for garden beds or containers
Landscaping Uses
Citrus hystrix is ideal for:
Edible gardens
Courtyards and patios
Container planting
Feature planting
Productive landscapes
Its foliage and fruit provide both visual and practical value.
Longevity and Performance
A reliable, long-lasting citrus tree that performs consistently.
Provides year-round foliage and seasonal harvest
Maintains a dense, attractive canopy
Suitable for long-term planting
Summary
Citrus hystrix (Kaffir Lime) is an evergreen fruiting tree growing to approximately 2–4 metres tall and 1.5–3 metres wide. It establishes within 2–4 years, forming a dense plant with glossy, highly aromatic leaves and distinctive fruit.
Its combination of ornamental appeal and culinary use makes it an excellent choice for edible gardens, containers, and feature planting.
