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Teak (Sagwan)All seasonsTissue-culture cloneUpdated 23 September 2026

IFGTB TG Clones (TG-1–TG-5)

Five tissue-culture clones developed and released by ICFRE-IFGTB, Coimbatore, selected for faster growth, better girth development and a straighter, more cylindrical bole than seedling-origin stock; promoted to farmers through Tamil Nadu's Green Tamil Nadu Mission and available through IFGTB-linked and private tissue-culture nurseries.

SeasonAll seasons
Maturity periodFaster early growth than seedling stock; full rotation still 20+ years
Expected yieldHigh; more uniform bole shape improves sawn-timber recovery
Suitable soilDeep, well-drained loam

Quick facts

Crop
Teak (Sagwan)
Type
Tissue-culture clone
Season
All seasons
Maturity period
Faster early growth than seedling stock; full rotation still 20+ years
Expected yield
High; more uniform bole shape improves sawn-timber recovery
Suitable soil
Deep, well-drained loam
Release
Developed and released by ICFRE-IFGTB, Coimbatore; distributed through Tamil Nadu's Green Tamil Nadu Mission and IFGTB-linked nurseries

About this variety

The IFGTB TG-series (TG-1 through TG-5) are five tissue-culture teak clones developed and evaluated by ICFRE-IFGTB (Institute of Forest Genetics and Tree Breeding), Coimbatore, selected for faster growth, better girth development, and a straighter, more cylindrical bole than ordinary seedling-origin planting stock. Tamil Nadu's Green Tamil Nadu Mission has begun distributing these clones to farmers as part of a state programme covering 55,000 seedlings across demonstration plots in 20 districts, using a deliberate polyclonal approach (multiple clones together) to spread the risk of any single clone being hit by pests, disease or climate stress. Individual clones from this series, including TG-5, are also available directly through IFGTB-linked and private tissue-culture nurseries.

Key characteristics

    Plant typeTissue-culture clone
    MaturityFaster early growth than seedling stock; full rotation still 20+ years
    Yield potentialHigh; more uniform bole shape improves sawn-timber recovery
    Disease resistanceNot separately documented; monitor for the same defoliator/pink disease risk as any teak planting
    SoilDeep, well-drained loam
    SeasonAll seasons

Sowing & cultivation

  • Spacing2 × 2 m to 3 × 3 m at initial planting, thinned progressively over the rotation

Yield & maturity

Maturity period

Faster early growth than seedling stock; full rotation still 20+ years

Expected yield

High; more uniform bole shape improves sawn-timber recovery

Actual yield depends on sowing time, soil, irrigation, weather, seed quality and crop management.

Pest & disease considerations

Advantages & considerations

Why farmers may choose it

  • Faster growth and better girth development than ordinary seedling-origin stock
  • Straighter, more cylindrical bole shape improves sawn-timber recovery at felling
  • Backed by a state farm-forestry programme (Tamil Nadu's Green Tamil Nadu Mission) with demonstration plots to monitor real-world performance

Things to consider

  • Costs more per plant than an ordinary seedling stump, since it requires tissue-culture propagation
  • Availability may still be building out as the associated nursery infrastructure scales up in some states

Suitable regions

States this variety is recommended for — check locally, since a state can have more than one recommended zone.

  • Tamil Nadu

Sourced from: Institute of Forest Genetics and Tree Breeding (IFGTB), Coimbatore. editorial policy.