Have grown them many times.
The blue Texas Bluebonnet version that is.
They also are wild in CA.
They are tricky to grow.
1) You MUST soak the seeds for 24 hours in cold distilled or spring (NOT tap or chlorinated) water.
The seeds that swell and soften (become about the size of a small pea) after soaking are ready for planting (about 50% will soften).
To increase your yield, the ones that are still small and hard after soaking can be nicked with a razor blade or pin (just pierce the seed coat, seed coat is hard, don't cut yourself! I use a set of pliers or a small washer to hold the seed so it doesn't go skittering off). You can then try soaking them some more to see if they will swell.
The seeds that are swollen can now be planted.
2) Soil. Lupines like sandy soil that does not have a lot of fertilizer. A lot of fertilizer (say pure potting soil) will make the seedlings rot. I start the seeds in a mixture of 1/2 sand and 1/2 potting soil. In CA I noticed wild lupines prefer adobe clay.
3) Warmth. Lupines like a lot of soil heat to germinate. I have a grow box with a soil heater that keeps the soil at 75F. I notice this really increases the yield on all my seeds. Your typical germination setup on the windowsill (especially in SF) is too cold (temps of 60-65 F).
4) Dry soil. Once germinated, water sparingly. I keep the soil right on the edge of drying out. If you overwater the sprouts will rot. Once they are established (a bunch of 5 sided leaves) you don't have to worry so much.
5) Lots of sun. Once sprouted (a few of the 5 sided adult leaves in evidence) plant outdoors in the sunniest location you can find.
As pesty as the things are to grow from seed, they are a very carefree plant once growing. They are very drought and heat tolerant and require no maintenance (I would NOT fertilize them).