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
Regulatory compliance assurance. Meets UK legal requirements consistently. Zero crop destruction risk.
Seed Yield & Oil
Optimised agronomic performance for commercial viability across food and health markets.
Fibre Quality
Superior processing characteristics for industrial applications in textile and construction sectors.
Root & Carbon
Environmental resilience and sustainability benefits with carbon stewardship potential.
Climate Resilience
Reliable performance across UK growing conditions and 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, delivering strong seed production and oil quality. Stackatrait™ enhancements ensure commercially competitive yields 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
Auto-Flowering Technology
Matures based on accumulated growing degree days rather than day length, enabling flexible sowing and predictable harvest timing across UK regions.
Stackatrait™ Grain Optimisation
Multiple precision trait modifications work together to deliver commercially competitive grain yields with premium oil quality.
UK Climate Adaptation
Adapted for UK growing conditions with earlier sowing capability and maturity that fits regional growing seasons including Scotland.
Guaranteed THC Compliance
Proprietary cannabinoid modification ensures <0.01% THC. Zero crop destruction risk regardless of growing conditions.
Target Markets
Scientific Citations & Sources (3 references)
LongLine Fibre™
Maximum fibre for construction and textiles
LongLine Fibre™ is our fibre-optimised variety, delivering strong straw production and premium fibre quality. Stackatrait™ enhancements ensure commercially competitive fibre output 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
Industry-Leading Fibre Production
Delivers strong straw yields with premium fibre content, significantly outperforming conventional varieties for industrial and textile applications.
Superior Fibre Quality
Precision modifications deliver improved mechanical properties and processing characteristics suitable for premium textile and composite applications.
Faster Processing
Improved processing efficiency is a critical advantage in UK climate conditions, reducing time from harvest to market.
Robust Plant Architecture
Climate resilience modifications ensure reliable harvests with minimal crop losses, even in exposed UK growing conditions.
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 for maximum revenue diversification. Combines grain production with quality fibre, environmental sustainability benefits, 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
Optimised Dual Harvest Architecture
Balanced plant structure supports both grain and fibre production, with flexible harvest options to match market conditions.
Sequential Harvest Flexibility
Choose sequential, grain-only, or simultaneous harvest to match market conditions and maximise returns.
Environmental Sustainability
Enhanced sustainability characteristics with carbon stewardship potential, opening additional revenue opportunities as environmental markets develop.
Maximum Risk Mitigation
Multiple revenue streams from grain, fibre, and environmental markets provide diversification and downside protection.
Target Markets
Scientific Citations & Sources (3 references)
Ready to Grow the Future of
British Agriculture?
"There is only one known annually renewable natural resource… capable of providing the majority of the world's paper and textiles… energy needs, while simultaneously reducing pollution… and that substance is… Cannabis hemp."
Join our farm trial programme or register your interest for our 2032 commercial seed release.