GRAINS / BARLEY 84 days, traditionally thought to have been introduced to Trondra, Shetland Islands by the Vikings in 800-900 A.D. $3 Request Now Listed In: 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2022, 2023, 2024, 2025 Maine USDA Hardiness: 5 View Profile & Listings