TRS1 is Vietnam's most widely used Robusta seed variety, a polyclonal blend of TR4, TR9, TR11 and TR12.
TRS1 is a dwarf/compact polyclonal (multi-clone, seed-propagated) Robusta variety bred by WASI from parent clones TR4, TR9, TR11 and TR12, the most commonly used Robusta variety among Vietnamese farmers thanks to easy seed multiplication and wide adaptation, optimal at 400-900 m. Because it is polyclonal, individual plants show growth differences.
Field notes
- i
WASI established the TRS1 polyclonal seed gardens in 2003, and the ministry approved it for nationwide release in 2015.
Family tree
TRS1 is a cross of TR4 and TR9 and TR11.
Grown in
- Vietnamorigin
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
- TRS1 (WCR Varieties Catalog) · World Coffee Research