I have heard that the seed is sterile, so no it will not reseed.

I'm not growing it so I don't know how easily it might self sow with our wet winters, but the seeds are for sale in every seed catalog I have....'direct sow in Spring'.

No, the seed isn't sterile. But you'll be lucky to get 50% of the seedlings with the dark foliage.

You'll be even luckier to get no seedlings coming up at all. I cannot believe how ugly the purple ones are.

Oh Ron. It goes perfect with the fall color pallet and looks a lot better than corn stalks. Actually, I just did an informal survey of this plant as a possible offering at the mum sale at my son's school next year and it got 100% thumbs up.

Bad taste is never in short supply. Do check its legal status before propagating and selling, in case it "belongs" to somebody.

As the OP, I will admit that Ron has a point here, even though he could, as usual, blunt it a bit for casual sparring. The millet was a misguided gift and is, as usual, not the wonder advertised. It's definately not the substitute for purple fountain grass my good-intentioned pal meant it to be. It's turned out shorter than expected, thirsty, and a bit relentless with it's intense flat color. I was concerned it would crop up everywhere if left to seed. I have found uses...looks great in a dried arrangement and my finches like it as well as the white despite my opinion that it's pretty bitter. Makes a great cat toy, too.

When it first arrived, I considered planting it in front of my black locust frisia just so I could provoke Ron with a pic. ;)