TR4 is a Vietnamese WASI Robusta clone valued for high, stable yield, strong secondary branching and wide adaptability.
TR4 is a dwarf/compact Vietnamese Robusta clone bred by the Western Highlands Agroforestry Science Institute (WASI), selected from an open-pollinated mother tree and propagated by grafting. High and stable yield and quality with strong secondary branching, optimal at 500-800 m. Must be co-planted with other clones for fruit set.
Field notes
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TR4's mother tree came from a farm in Dak Lak province, and Vietnam's agriculture ministry approved it as an official national variety in 2006.
Family tree
Grown in
- Vietnamorigin
Offspring
Sources · 2 Every sentence here was checked against a source we read. Taste notes are what guides describe, not promises about your bag. Last revised 2026-11-11.
- Robusta Varieties — A global catalog of Robusta coffee varieties from around the world (PDF, rev. Sept 4, 2025) · World Coffee Research
- TR4 (WCR Varieties Catalog) · World Coffee Research