Here is a discovery I made this year: Great Blue Lobelia (Lobelia siphilitica) can be planted in an outdoor container and left there all through a zone 5 winter. The following spring, it will wake up cheerful and raring to go.
The Great Blue Lobelia in our shady Back Garden seem to positively love this treatment. They have been thriving in their pots all year, reaching heights of 4-5′, and blooming profusely.
They are sharing the containers mainly with Caladiums. They make a nice combinations, I think.
I love the tall racemes of violet-blue flowers.
And so do the bumblebees. Though I’ve noticed that sometimes the bumblebees seem to struggle with squeezing between the upper and lower lips of the flowers.
Instead they try to gain entry from the side, or at least that’s what it looks like they are doing.
More slender native bee species, on the other hand, can crawl in and out with apparent ease. If you enjoy bee-watching, Great Blue Lobelia can provide lots of entertainment. Hummingbirds are also drawn to this plant.
And another thing: the Great Blue Lobelia is self-sowing into a part of the Back Garden that I’m allowing to grow wild into a sort of shady glade. Not what I had expected but not a bad thing either.
As with so many other plants, Great Blue Lobelia seems to have a mind of its own as to where it will be happy.