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Irish Lumper

Potato 'Irish Lumper'
Genus Solanum
Species Solanum tuberosum
Cultivar 'Irish Lumper'

The Irish Lumper is a varietal white potato of historic interest. It has been identified as the variety of potato whose widespread cultivation throughout Ireland, prior to the 1840s, is implicated in the Irish Great Famine in which an estimated 1 million died.

The 'Irish Lumper' is noted for its ability to flourish on garden beds that are poor in nutrients, wet-footed, or both. Until the 1840s, it was closely adapted to growing conditions in Ireland, particularly western Ireland. The Department of Agriculture, Fisheries and Food of Ireland noted that the Lumper was a "very old variety, and ... probably well known when first recorded by Dutton (1808) in his Agricultural Survey of County Clare. ... It was described by Andrews (1835) as a 'coarse species' and was recommended by Howden (1837) as stock feed due to its enormous yield."

In the 1840s, infestations of Phytophthora infestans devastated a series of potato harvests, leading to widespread famine and emigration. The cumulative effects of both catastrophes lowered Ireland's total population by approximately 2 million, of which approximately 1 million were fatalities.

After almost disappearing from cultivation, the 'Irish Lumper' was regrown, starting in 2008, by Michael McKillop of County Antrim for harvest sale as an heirloom varietal.

The 'Irish Lumper' has been characterized as a "wet, nasty, knobbly old potato." Its texture upon boiling is described as more "waxy" than "floury", indicating a starch content on the lower side of that typical for white potatoes.

Schools in Ireland are starting to cultivate the 'Irish Lumper' as a project of historical education. The Lumpers are cultivated in raised garden beds, as their ancestors were in the 1840s.


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