USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
Triple Crown produces as advertised. My plant is just completed its third season (planted spring of 2009) and I picked at least 3 gallon...Read More
I am going to have to completely remove a stand of Triple Crown, probobaly 50+ plants, planted a few years ago due to the leaf curl virus...Read More
I purchaded a Flat (10 tubes) from 'Raintree Nursery' 4 years ago. the first year these thornless black berry gave us about 5 lbs of berr...Read More