This White Great Lobelia or Big White Lobelia is not really different from the regular mother species, except for white flowers. This slight mutation probably happens in various spots in nature all through its native range in eastern North America. I fist saw Big White lobelias in my largest customer's yard in southeast Pennsylvania along with mostly Great Blue Lobelias. Over a decade, the number of both White and Blue specimens have self-sown a lot in the customer's yard with lots of part-shade and moist to draining wet silt-clay soil. I actually took a number of extra ones from her yard by just pulling them out of the ground, not digging, and putting them in a pot of water or wet soil until I got them to my yard. I planted them and they easily took. Now both Blue and White plants are self-sowing in parts of my yard also and doing well. This is a very easy perennial. Some conventional nurseries with good-sized perennial flower selections sell both the Blue and the White Lobelias; I have not seen them sold at big box or Home Depot-Lowes stores.

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