Progeny from a San Francisco Botanical Garden introduction from high elevation in Guatemala.  High there still means frost sensitive but what a showoff in zones 9&10!  Mass red flowers summer into winter with the lower three petals contrasting apricot.  Evergreen shrub to 5-'6'+ tall and as wide.  Ours in pots feed the overwintering greenhouse hummers.

If you have the spot for this plant then there is no reason to not to grow this unless you simply don't do red because this is a smoldering fountain of saturated pigmentation celebrating the red spectrum.  Red foliage and bright red flowers on 3'-4' stems in late summer.  Moist and rich.

One of those perennial Lobelia that shouldn't be as hardy as it is but mountainous areas of southern Arizona and northern Mexico have plants with surprising hardiness.  A graceful clump of thin willowy leaves on stems 15"-24" tall with a profusion of midsummer tubular red flowers with a bright yellow throat.  Deciduous in winter, ours handles our brief drops to 10F with mulch.

Amazing Chilean Lobelia that is perfectly hardy, especially if you mulch it during nasty cold snaps.  This gets multiple stalks to 7' high with spires of tubular red flowers for weeks which beckon Hummingbirds from afar.  Highly dramatic and surprisingly easy.  Good rich soil.