I've grown both of those plants. The poached egg plant is an annual, and lupine is a perennial.
Annuals will flower the first year you plant them. Unless your annuals reseed themselves, they have to be replanted every spring. Apparently, the poached egg plant is known for self-seeding to the point that some people consider it invasive, but they never self-seeded for me. I had to replant them every year.
Perennials die back in the fall and resprout in the spring, so don't usually need to be reseeded. Lupines are referred to as "short-lived" perennials and just don't last as long as some. Others, such as peonies, will return for many years. I've heard that some lupines flower sparsely the first year, but mine did not. I had tons of flowers in following years, though.
I started both the poached egg plant seeds and the lupine seeds outdoors. Lupines like a short cold period before they'll sprout, which would probably be easier to provide by just planting the seed outdoors. They also have a long taproot, which tends to make them not take well to transplanting. I don't know that that means you shouldn't start them indoors in containers, but it's something I'd be wary of. I've never had luck transplanting plants, even small starts, that have taproots.
"Isn't it enough to see that a garden is beautiful without having to believe that there are fairies at the bottom of it too?" - Douglas Adams