Early Bird
Deadline
January 31, 2026
Judging
Date
May 18, 2026
Winners
Announced
June 10, 2026
Our Products
2024
Rattlesnake Hills AVA 2018 Sidewinder Syrah
Shiraz / Syrah
Vintage 2018
86 Points
Rattlesnake Hills AVA 2020 Petit Verdot
Petit Verdot
Vintage 2020
86 Points
Rattlesnake Hills AVA 2018 Cabernet Sauvignon Clonal Blend
Cabernet Sauvignon
Vintage 2018
84 Points
Rattlesnake Hills AVA 2021 Merlot
Merlot
Vintage 2021
83 Points
Rattlesnake Hills AVA 2020 Cabernet Sauvignon Clone 7
Cabernet Sauvignon
Vintage 2020
82 Points
Rattlesnake Hills AVA 2019 Malbec
Malbec / Auxerrois / Cot
Vintage 2019
77 Points
Bosma Estate Winery
United States
Purchase our Products Here:
Bosma Estate Winery was born from our love of good wine and interest in growing quality wine grapes. We entered the wine industry in 2005 with the purchase of Bosma Estate Vineyard. More recently we planted Diamondback Ridge Vineyards. Growing quality wine grapes by managing light and water is our focus. Careful attention to details produces top quality grapes which are key to top quality wines.