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)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
The flower color is beautiful, a clear violet-purple. This plant lacks the big leafy bracts of L. siphilitica that detract from the flowe...Read More
I whish I could write a positive review on the color alone, but this plant always flops in my garden so it looks more messy than pretty,...Read More
My plants crossed on their own and my resulting plants are cranberry colored not purple like those pictured above.
This is a great substitute for delphinium in hot humid areas. While the delphiniums are dropping dead in my garden, this lobelia looks g...Read More
I love this plant. I had it growing in its pot in the pond this year - not entirely in the water, just about half the pot submerged, and ...Read More
Lobelia x Gerardii is a hybrid between L. Cardinalis and L. Siphilitica. Vedrariensis has red tinted foliage and purple flowers. pokerboy.
A tall hybrid perennial.
Has lance shaped, mid-deep green leaves sometimes blushed with red. Bears 5 lobed, 2 lipped purpl...Read More