The Master Leys range of grass mixtures offers full and comprehensive options for all types of farming systems and regions of the UK.
Working in close coordination with leading grass seed breeders throughout the UK and Europe, Agrii are able to access the best varieties to formulate the Master Leys portfolio.
In addition to this, Agrii grows and produces over 80% of the grass seed used to produce Master Leys .
This enables us to have a greater control over the quality of the seed we use and ensures that what goes into a Master Leys bag is of the highest possible standard.
At Agrii, we believe that giving specific advice on increasing quality home grown forage is the key to maximising an individual livestock farm’s productivity.
Technical Advice and Information for Growers
Our extensive knowledge of nutrient management, agrochemical inputs, grass seed mixture formulations and grassland management can all help build a resilient business and increase margins from forage in these uncertain times.

Selecting Grass Seed Mixtures to Suit You

Grass Species Characteristics

Reducing Weed Grasses

Reseeding: Realise the Benefits

Reseeding: Top Tips

Overseeding: Top Tips
Mixtures For Growers in England, Wales & Northern Ireland
Explore Grassland Mixtures for the UK

Bulk Master

Silage Master

Cut Master

Protein Master

Drought Master

Forage Master

Field Master

Sward Master

Sward Master Plus

Stock Master

Multi Master Plus

Short Term Over Master

Medium Term Over Master

Long Term Over Master

Maize Master

Horse and Pony

Lami-less Horse and Pony

Hay

Haylage
Mixtures For Growers in Scotland
Explore Grassland Mixtures for Scotland

Bulk Master

Cut Master

Protein Master
Short to Medium Term

Silage Master

Turbo Master

Field Master

Sward Master

Scot Master
Medium to long term

Sward Master Plus

Hill Master

Short Term Over Master

Medium Term Over Master

Long Term Over Master

Maize Master

Horse and Pony

Lami-less Horse and Pony

Hay

Haylage


Grass and Roots
For England, Wales & NI

Grass and Roots Scotland
For Scotland

Approach Us
We’re here to help your business ambitions. See how we could work together, we’d love to hear from you.
Let's Talk
Grassland Nutrition
Getting the basics right is fundamental to efficient production.
Grassland Nutrition
Livestock Support
The nutritional work we are involved with has shown major advantages in health and temperament
Animal Nutrition
Seeds
The highest quality seed offerings, formulated from a science based, sustainable production
Agrii Seeds
Agronomy
We are the UK’s leading agronomy company, with more than 300 BASIS-trained consultants offering independent advice
Learn MoreJoin Our Community

Agrii X
We love engaging with clients and partners. Give us a follow and let's share stories for the community.

Agrii Instagram
A picture paints a thousand words. Follow us on Instagram to see what we are up to.

Agrii Facebook
Follow us on the worlds biggest social media site for the latest news and events straight to your feed.

Agrii LinkedIn
If you are all about the business, connect with us on LinkedIn to build your network
Stay In Touch

Journal Sign-Up
Receive email updates on topical news and information from around Agrii and UK Farming.

Listen To Our Podcasts
Listen to the Tramlines Podcast. Fortnightly chat about agriculture and trials with your host Tony Smith.

Agrii Insights
Read essential agri intelligence for profitable farming.

Find an Event
Join us for our upcoming events and tours.
Featured News
News - 17/02/25
Incremental Hedge Cutting
News - 30/01/25
Fertiliser additives deliver big savings and improved soil health
News - 28/01/25
AgriWellbeing Alliance Launches to Support Farming Mental Health
News - 17/12/24
Agrii’s new glasshouse facilities to promote better research
News - 12/12/24
From Soya to Sustainability
From the fields
Get Growing
Find leading products for all your crop, livestock, and equipment needs

Growing Winter cereals? Find out more here
See our range of researched Winter Cereal crops for your rotation

Find out more about Environmental Mixtures
Need ground cover, bird seed and wildflower mixtures? We've got you covered

Find out more about OSR
Robust varieties and crop management advice

SFI SAM3 Herbal Leys
Find the right SFI legume and herbal ley for your farm system

Grassland to repair? Discover your options
Discover our range of grass seeds

Find out more about Fruit
Dedicated horticulture and viticulture teams to help you manage your crops

Find out more about Potato crops
We have deep expertise in potato crop management

Find out more about growing Vegetables
Specialist agronomy and solutions for high value crops

Find out more about Hybrid Rye Crops
Growing wholecrop for AD or grain for livestock we have varieties and advice to help you grow

Find out more about Root Crops
A broad range of Root Crops for home-grown forage

Find out more about Innovation Crops
Options for profitable opportunities in your rotation