Pre-order for 2015Rhizomes are only available for order in the USA. Please check to make sure your State does not have any local restrictions.Alpha Acid: 5.0-10.0%. High yielding, sister to Bullion, ancestor to most major high alpha varieties. Has a resiny, spicy aroma/flavor with hints of black currant. Substitutions: Northdown Hops are hardy in U.S. Department of Agriculture plant hardiness zones 3 through 8.