Cultivar · Barley cultivar
Maris Otter
Maris Otter is a two-row winter malting barley bred at the Plant Breeding Institute in Cambridge and introduced in the mid-1960s, long prized in traditional British cask-ale brewing and still grown for that niche market today.
Record
Cultivar / variety- Variety of
- Barley
- Botanical taxon
- Hordeum vulgare
- Type
- Cultivar
- Breeding method
- Cross-breeding (pedigree selection)
- Origin
- Cambridge (Plant Breeding Institute, Trumpington), United Kingdom
- Breeder / institution
- Plant Breeding Institute, Cambridge (G. D. H. Bell)
- Registry status
- Historical · as of 2026-07-12
- Adaptation
- A winter (autumn-sown) two-row barley grown in the temperate maritime climate of England, chiefly for the traditional malting and brewing sector.
- Intended use
- Winter malting barley for traditional cask-ale (real ale) brewing
Registry listing or variety protection is jurisdiction- and date-specific and does not by itself indicate current commercial availability, universal cultivation approval, patent status, or a recommendation.
Maris Otter is a two-row winter malting barley (Hordeum vulgare) bred at the Plant Breeding Institute in Cambridge and introduced in the mid-1960s. It carries the institute’s "Maris" prefix, taken from Maris Lane in Trumpington, near Cambridge, and its reported parentage is a cross of the spring barley Proctor with the winter barley Pioneer.
Maris Otter became highly regarded in the British malting and brewing trade, especially for traditional cask ale ("real ale"). Although long superseded in mainstream agriculture by higher-yielding varieties, it has remained in active niche production for craft and traditional malting, sustained by demand from brewers.
History and development
Maris Otter was developed at the Plant Breeding Institute in Cambridge, the source of many widely grown British cereals bearing the "Maris" name. Introduced in the mid-1960s, it was bred as a winter malting barley and its reported parentage combines the spring barley Proctor with the winter barley Pioneer.
It earned a strong reputation among maltsters and brewers, particularly for traditional cask ale. Unlike most cultivars of its generation, it has been kept in production for a specialist market rather than disappearing when newer varieties arrived.
Classification and use
- Species
- Hordeum vulgare
- Spike type
- Two-row
- Growth habit
- Winter (autumn-sown; requires vernalization)
- End use
- Malting for traditional cask-ale brewing
Relationships
Evidence-backed connections in the knowledge graph.
Adapted to climate
Scope & limitations
Geographic scope: Documented United Kingdom two-row winter malting barley grown chiefly for traditional malting; adaptation and performance are region- and season-specific.
Climate context: A winter malting barley adapted to the temperate maritime climate of England.
- Adaptation and trait notes are region- and season-specific, and performance varies by environment.
- Sources vary on the exact introduction date (mid-1960s), so no single release year is asserted; the cultivar remains in niche production, but its current formal variety-list status is not verified here.
Sources
This article draws on the following authoritative sources. See our sources & methodology for how they are selected.
- [1]AHDB — Agriculture and Horticulture Development Board (opens in a new tab)High
Agriculture and Horticulture Development Board (AHDB)
Cited for: United Kingdom barley variety and malting context
- Type:
- Government agency
- Jurisdiction:
- United Kingdom
- Accessed:
- 2026-07-12
- High
Cited for: Classification of Hordeum vulgare
- Type:
- Reference database
- Jurisdiction:
- Global
- Accessed:
- 2026-07-12