Great Blue Lobelia
Great Blue Lobelia
Great Blue Lobelia

Great Blue Lobelia

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1-3 feet tall
Part Sun to Shade
Blooms July to September
Medium to Moist Site
Over 200 seeds per package


Great Blue Lobelia (Lobelia siphilitica) is a great option for planting near ponds, along lakeshores or rain gardens. It prefers cool, moist conditions and does not tolerate drought at all. The dainty blue flowers are a lovely end of season addition to the garden.

Growing Instructions

Cold, moist stratification required. Mix seeds with moist substrate (vermiculite, perlite or moss) and place in a plastic bag and refrigerate for 6-8 weeks. Sow seed at 1/8 inch depth. Do not let seedling dry out while it is establishing.


Sow directly outdoors in late fall to overwinter.