Three Varieties. Built for Britain.
Grain, fibre, or dual-purpose — every UK farm need covered. All powered by Stackatrait™ precision breeding technology, designed for guaranteed compliance and enhanced performance.
Hemp Variety Quick Facts
What are the best hemp varieties for UK farmers?
Precision Plants offers three precision-bred hemp varieties optimised for UK growing conditions: BritGrain Auto™ (grain, 1.8–2.4 t/ha, 90–110 days), LongLine Fibre™ (fibre, 8–12 t/ha dry stem, 120–140 days), and YieldMax Duo™ (dual-purpose grain and fibre). All three varieties are being developed to be genetically incapable of exceeding legal THC limits, designed to guarantee 100% compliance. Currently in laboratory development with commercial launch targeted for 2032.
Every variety is being developed using Stackatrait™ precision breeding technology, which stacks five trait categories — Cannabinoid Modification, Seed Yield & Oil, Fibre Quality, Root & Carbon, and Climate Resilience — into a single elite variety. All three varieties are currently in the laboratory development stage, with field trials planned as part of our path to commercialisation. — Precision Plants R&D Programme 2024–25
Every Variety Powered by Stackatrait™
Our proprietary precision breeding platform stacks multiple beneficial traits into each variety. Stackatrait™ combines five trait categories — Cannabinoid Modification, Seed Yield & Oil, Fibre Quality, Root & Carbon, and Climate Resilience — all in one elite variety.
Cannabinoid Modification
Precision-engineered THC elimination. Genetically incapable of producing THC above 0.01%. Zero crop destruction risk.
Seed Yield & Oil
Enhanced seed size, increased seeds per plant, improved harvest capture, and premium oil quality for food and health markets.
Fibre Quality
Enhanced bast content, improved tensile strength, higher cellulose purity, and faster retting for premium textile and construction applications.
Root & Carbon
Deep root architecture for drought resilience and enhanced carbon sequestration. Unlocks carbon credit revenue streams.
Climate Resilience
Cold-tolerant germination, lodging resistance, disease resistance, and predictable maturity across UK latitudes and growing seasons.
Variety Comparison
Choose the variety that matches your farm's needs and market opportunities. All varieties include 5 stacked Stackatrait™ enhancements.
| Feature | BritGrain Auto™ | LongLine Fibre™ | YieldMax Duo™ |
|---|---|---|---|
| Primary Focus | Grain | Fibre | Dual-Purpose |
| Grain Yield | 1.8-2.4 t/ha | 0.3-0.5 t/ha | 0.8-1.2 t/ha |
| Fibre Yield | Not targeted | 8-12 t/ha | 6-8 t/ha |
| Gross Margin | £1,440-4,350/ha | £2,380-6,480/ha | £1,927-5,327/ha |
| Maturity | 90-110 days | 120-140 days | 100-120 days |
| Plant Height | 1.5-2.0 m | 2.5-3.5 m | 2.0-2.5 m |
| THC Level | <0.01% | <0.01% | <0.01% |
| Stackatrait™ Trait Modifications | Grain-focused stack | Fibre-focused stack | Full 5-category stack |
| Sowing Window | Mid-April – June | April – May | April – June |
| Sowing Rate | 35-45 kg/ha | 50-70 kg/ha | 40-55 kg/ha |
| N Requirement | 60-80 kg/ha | 80-100 kg/ha | 70-90 kg/ha |
| Best For | Food/feed/oil markets | Construction/textiles | Diversified income |
Financial projections based on current UK market prices and validated scientific research. Actual returns depend on yield achieved, market conditions, and forward contracts.
Why Hemp Outperforms Conventional Arable Crops
UK arable farming faces declining margins. DEFRA data shows average wheat net margins of just £80/ha in 2024. Precision Plants varieties offer 15-50x higher gross margins with zero pesticide requirements and positive soil health impacts.
| Crop | Yield | Gross Margin | Pesticides | Soil Health | Carbon Impact | Source |
|---|---|---|---|---|---|---|
| Winter Wheat | 7.3 t/ha | £400-600/ha | 4-6 applications | Depleting | Net emitter | DEFRA Chapter 7 Crops 2024 |
| Winter Barley | 6.0-6.5 t/ha | £300-500/ha | 3-5 applications | Depleting | Net emitter | AHDB Harvest Report 2025 |
| Oats | 5.5-6.0 t/ha | £250-450/ha | 2-4 applications | Neutral | Net emitter | DEFRA/AHDB |
| Oilseed Rape | 3.0-3.5 t/ha | £350-550/ha | 5-7 applications | Moderate | Net emitter | DEFRA 2024 |
| BritGrain Auto™ | 1.8-2.4 t/ha | £1,440-4,350/ha | Zero | Improving | Sequesters 8-15 t CO₂/ha | Precision Plants |
| LongLine Fibre™ | 8-12 t/ha (straw) | £2,380-6,480/ha | Zero | Improving | Sequesters 8-15 t CO₂/ha | Precision Plants |
| YieldMax Duo™ | 0.8-1.2 t/ha grain + 6-8 t/ha straw | £1,927-5,327/ha | Zero | Improving | Sequesters 15-28 t CO₂/ha | Precision Plants |
Sources: UK wheat yield 7.3 t/ha — DEFRA Chapter 7 Crops 2024 | Wheat gross margin — AHDB Harvest 2025 Gross Margins | Arable net margin ~£80/ha — Strutt & Parker Arable Profitability 2024 | Hemp CO₂ sequestration — British Hemp Co
BritGrain Auto™
Optimised for food, feed, and oil markets
BritGrain Auto™ is our grain-optimised variety, engineered for maximum seed production and premium oil quality. Stackatrait™ enhancements across Cannabinoid Modification, Seed Yield & Oil, and Climate Resilience deliver 1.8–2.4 t/ha grain with 33–38% oil content, auto-flowering genetics, and guaranteed THC compliance.
UK Regional Performance
Stackatrait™ Enhancements
This variety includes 5 precision-stacked genetic improvements, each backed by peer-reviewed research:
Agronomic Specifications
Financial Returns (per hectare)
Key Features
Auto-Flowering Technology
Doesn't rely on day length to trigger flowering. Matures in 90-110 days based on accumulated growing degree days, enabling flexible sowing from mid-April to June and predictable harvest timing.
Stackatrait™ Grain Optimisation
Multiple precision trait modifications compound to deliver 1.8–2.4 t/ha: enhanced seed size and number, improved harvest capture, premium oil quality (>70% oleic), optimised plant architecture, plus cold tolerance and maturity control.
UK Climate Adaptation
Cold germination at 8°C enables mid-April sowing in most UK regions. Deep tap root for drought resilience. 90-110 day maturity fits the Scottish growing season (131 days).
Guaranteed THC Compliance
Precision-engineered cannabinoid modification — genetically incapable of producing THC above 0.01%. Zero crop destruction risk regardless of weather stress, heat events, or growing conditions.
Target Markets
Scientific Citations & Sources (3 references)
LongLine Fibre™
Maximum fibre for construction and textiles
LongLine Fibre™ is our fibre-optimised variety, engineered for maximum straw production and premium fibre quality. Stackatrait™ enhancements across Cannabinoid Modification, Fibre Quality, and Climate Resilience deliver 8–12 t/ha straw with 30–35% bast fibre content, 500–720 MPa tensile strength, and 50% faster retting — all with guaranteed THC compliance.
UK Regional Performance
Stackatrait™ Enhancements
This variety includes 5 precision-stacked genetic improvements, each backed by peer-reviewed research:
Agronomic Specifications
Financial Returns (per hectare)
Key Features
Maximum Fibre Production
8-12 t/ha of high-quality straw with 30-35% bast fibre content. Produces 2.4-3.5 t/ha extracted bast fibre and 1.2-1.8 t/ha textile-grade long fibre — up to 80-100% more than current varieties.
Enhanced Fibre Quality
500-720 MPa tensile strength (30% above baseline) through precision fibre quality modification. Cellulose content increased to 70-78% for stronger, more processable fibre suitable for premium textile and composite applications.
50% Faster Retting
Precision fibre quality modifications reduce field retting from 3-6 weeks to 2-3 weeks. Critical advantage in the UK's damp autumn conditions where slow retting degrades fibre quality.
Lodging Resistance
Climate resilience modifications increase stem strength and optimise structural integrity. Prevents 5-15% yield loss from lodging in exposed UK fields, enabling reliable harvests.
Target Markets
Scientific Citations & Sources (3 references)
YieldMax Duo™
Diversified income from grain and fibre
YieldMax Duo™ is our dual-purpose variety carrying the full Stackatrait™ platform — all five trait categories — for maximum revenue diversification. Combines grain production with quality fibre, deep root carbon sequestration, and guaranteed THC compliance. Four income streams: grain + straw + carbon credits + shives.
UK Regional Performance
Stackatrait™ Enhancements
This variety includes 5 precision-stacked genetic improvements, each backed by peer-reviewed research:
Agronomic Specifications
Financial Returns (per hectare)
Key Features
Optimised Dual Harvest Architecture
Balanced 2.0-2.5m plant structure supports grain weight while providing quality fibre. Compact grain heads for efficient combine harvest with moderate branching for fibre quality.
Sequential Harvest Flexibility
Grain matures first while fibre quality is maintained post-grain harvest. Choose sequential (grain then fibre), grain-only, or simultaneous harvest to match market conditions.
Carbon Credit Revenue Stream
Enhanced root biomass sequesters 15-28 t CO₂/ha total. Root carbon deposition of 0.12-0.15 t C per tonne harvested. Future carbon credits worth £400-1,500/ha at current voluntary market prices.
Maximum Risk Mitigation
Dual revenue streams from grain and fibre markets. If one market disappoints, the other provides backup. Carbon credits add a third income layer as markets mature.