Ask Mr. Smarty Plants

We'll start with the basics: Go to this Lady Bird Johnson Wildflower Center "How-to Article" on Bluebonnets. There are six species, all of which are considered the Texas State flower:

Lupinus havardii (Big Bend bluebonnet)

Lupinus perennis (sundial lupine)

Lupinus plattensis (Nebraska lupine)

Lupinus subcarnosus (Texas bluebonnet)

Lupinus texensis (Texas bluebonnet)

Lupinus concinnus (bajada lupine)

Of these, only Lupinus perennis (sundial lupine) naturally occurs in Illinois. On this USDA Plant Profile for the sundial lupine, you can scroll down to the map of the U.S, click on the outline of Illinois, and it will show you the counties where the plant occurs naturally. That doesn't mean they will only grow there, but it is proof that you can grow them in the Chicago area. The sundial lupine has a little more white in it than the Southern lupines, but it is still an official state flower of Texas, so it's okay

There are probably several problems in the non-productivity of your seeds. Who knows which species of bluebonnet were the originators of the seeds you purchased? You also probably have no idea how fresh they were. If you read the propagation information in the article on bluebonnets, you will find that the seeds need to be scarified, or put in boiling water, or some other technique to break that tough coat. In Texas, they are considered a Winter annual, seeding out at the end of the bloom season in about May or June, going underground during the hot summer, and beginning to put out the first flat rosettes in December or January, starting to bloom by early March. So, we always suggest that seeds be planted at about the same time the natural distribution is going on. The sundial lupine is considered a perennial, and the propagation suggestion is that seed be planted in the Spring. Since it gets a whole lot colder in Chicago than it does in Austin, that sounds like a good idea. The roots will hide from the cold underground, and new plants should come up, both from the roots and whatever seeds the plant dropped in the Summer.

Now, the question is, where do you get seeds that you can depend on being a bluebonnet that will survive in Illinois? We found two companies that provide seed in Illinois, both specializing in Midwest native plants, and both with websites and phone numbers. They should understand why you are looking for the specific bluebonnet, and hopefully be able to provide you not only with the right seed but with instructions on when and how to plant them. We really do hope you will be able to plant a little bit of Texas for your husband.