I find this fascinating! This Lobelia as well as a couple others seeded themselves in the yard and have had just as much water as the other plants in the gardens. Which I have only watered 4 times since the last time it rained (when was that?). How does an annual do it? If this plant was in an hanging basket or a pot would it still be alive?
Whats really sad is the Lobelia looks better than some of the drought tolerant plants.
Maybe I'll plant a garden full of Lobelia next year.