Other details
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)
Degree to which the appearance is present
Leaf Texture (bottom)
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored
Foliage Color
Medium (leaf 25-81 square inches; plant 10”-18” tall)
Regional
Dacula, Georgia
Machesney Park, Illinois
Reading, Massachusetts
Belfield, North Dakota
Glouster, Ohio
Marion, Wisconsin
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I have been growing Knockout for about six years. I have many divisions made from my original plant. They grow very quickly, have tons ...Read More
Zilis claims this cultivar is afflicted with marginal tearing, perhaps even worse than 'Brim Cup'.
Flower scapes 12". Aden 1986.