Description
Robusta coffee seeds TR9 are planting material for TR9, a high-yield robusta clone that Vietnam’s Western Highlands Agro-Forestry Scientific Institute (WASI) selected from a mother tree in Dak Lak. It gained national-variety status from Vietnam’s agriculture ministry (then MARD) in 2011. Large beans, high yield potential and leaf-rust resistance are its main selling points.
One point matters before you order: ordinary seed does not reliably reproduce a clone. Below: what that means for your order, sourced variety data, cultivation guidance and export rules.
Specifications
| Parameter | Specification |
|---|---|
| Variety | TR9 robusta (Coffea canephora), clonal |
| Breeder | WASI, Dak Lak; approved by MARD in 2011 |
| Propagation | Grafting and tissue culture |
| Growth habit | Vigorous, many primary branches, wide canopy |
| Leaves | Medium-sized, lanceolate, deep green |
| Cherries | Large, elongated, ripening deep red, concentrated in December |
| Yield potential | 5–6 t/ha green coffee in breeder trials |
| Bean size | Large (screen above 17); about 23 g per 100 beans |
| Cherry-to-green outturn | About 23% |
| Leaf rust | 0% recorded in WASI trials |
| Optimal altitude | Around 500–800 m |
| Planting density | 1,000–2,000 plants/ha (single-stem pruning) |
| First crop | Year 2–3 after planting |
| Planting-material format, packing | Confirmed per order |
Can Robusta Coffee Seeds TR9 Grow True to Type?
Not reliably. Robusta is cross-pollinated, so seed harvested from TR9 trees carries genes from neighboring clones, and the seedlings do not reliably keep TR9’s yield, bean size or rust resistance. True-to-type TR9 is multiplied vegetatively, by grafting or tissue culture, which is why we confirm the format before we quote.
If your order does include seed, plan to sow it quickly. Researchers class coffee seed as “intermediate” in storage behavior, and it usually loses satisfactory germination within about six months of harvest unless kept cool at controlled moisture (Journal of Seed Science, 2014).
Variety Characteristics & Applications
Bean size. In WASI’s trials, TR9 averaged 23.0 g per 100 beans, from 17.0 g in Gia Lai to 29.6 g in Lam Dong, with 89.5% of beans above screen 16 (Phan Viet Ha, Vietnam Journal of Science, Technology and Engineering, 2017). World Coffee Research’s TR9 variety profile classes it as large-bean. Bigger beans let more of the crop meet screen 16–18 export grades; see our guide to the Vietnamese coffee grading system.
Leaf rust. WASI recorded no leaf rust on TR9. WCR describes it as resistant in its notes but rates it “intermediate resistance” in its data table. Resistance can cut fungicide use, but it is not immunity; see coffee leaf rust (Hemileia vastatrix).
Who buys it. Plantation companies, cooperatives, nurseries and development programs in coffee-growing countries.
When it may not fit. TR9 needs a distinct dry season followed by rain or irrigation to flower well, plus high nutrition (WCR rates its requirement as high). In low-input systems or climates without a dry spell, it is unlikely to reach its potential.
Cultivation Guidance
- Site: tropical lowland and mid-altitude areas with conditions like the Central Highlands; WCR gives an optimal altitude of around 500–800 m. Choose deep, well-drained soil with irrigation access; see ecological requirements of coffee plants.
- Clone mix: plant several compatible clones together for fruit set. TR9 is often paired with TR11, and our team can advise on a suitable mix.
- Density: 1,000–2,000 plants/ha with single-stem pruning.
- Management: fertilization, pruning and dry-season irrigation decide how soon trees bear. Most bear in year 2 or 3 after planting.
Packing, Shipping & Ordering
- Format and quantity: from small trial lots to plantation orders; ask for current availability.
- Phytosanitary certificate: issued in Vietnam; we prepare it with the supporting plant-health documents.
- Entry rules (checked by the buyer): coffee planting material needs your country’s approval. Its plant protection authority sets the conditions and may require an import permit before shipment, so check this before you order.
- Terms: payment and shipping are agreed per order and confirmed in a signed proforma invoice (PI); quote replies within 24 hours.
Related Products
- Robusta coffee seedlings TR11: a vigorous WASI clone and a common pollination partner for TR9.
- Coffee seeds for planting: every planting-material listing in our range.
- Robusta coffee grade 1 screen 18: Dak Lak robusta at the large-bean export grade.
Frequently Asked Questions
How much does TR9 produce?
WASI’s multi-site trials averaged 5.2 t/ha of green coffee, from 4.1 t/ha in Gia Lai to 6.7 t/ha in Dak Lak. WCR’s 5,000–6,000 kg/ha figure also comes from limited breeder trials and is no guarantee. Soil, rainfall, irrigation, fertilization and pruning decide your result.
Is TR9 resistant to coffee leaf rust?
In WASI’s trials TR9 showed 0% leaf rust, and WCR places it between intermediate resistance and resistant. That can reduce fungicide spraying, but no variety is immune, so keep scouting your trees, especially in wet seasons.
Which clone should I plant with TR9?
Robusta needs cross-pollination, so plant TR9 with other compatible clones rather than alone. Many growers pair it with TR11. Tell us your area and planting plan, and our team will suggest a clone mix.
What do I need to import robusta coffee seeds TR9?
A phytosanitary certificate, which we arrange in Vietnam, plus whatever your country’s plant protection authority requires, which may include an import permit with conditions. Confirm those rules, and the planting-material format, with us before shipment.
