I'd bet that there is no Corn that planted at the same time as Gaspe Flint Corn will tassle anywhere near as soon as the Gaspe. I was already picking dry ears from Gaspe when Japonica was just tasseling.
It is a great corn to keep exactly as is!
But, it is ALSO a great corn to cross with other early heirlooms to make them even earlier. Crossed the old fashioned way of course! None of this inbreeding for 5 generations first stuff.
Even Waheenee's Hidatsa tribe had some corns that were described by her in her own way as being hybridized, though that was not her word for it at all. They also had a corn variety not well favored she called "Gummy". That one may have, my guess here, been a cross of a Dent and a Sweet Corn that stabilized. I think that one is now lost. It was processed into a travelling food to chew on, and was also still in storage if something happened with the main food supply, which often did happen. Gummy is not at all what Gaspe is. The Hidatsas did not have Gaspe.
Gaspe Flint was grown in Canada by Natives who came to be called Micmacs, especially in the area of a large Penninsula over the Great Lakes area. Early French explorers described seeing HUGE fields of it. This was the Corn that would grow up there.
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Seems to sprout like any Corn, same days to germination, typical temperature requirements. When it does sprout, the leaves are very pretty. Darker than some, and nice. I noticed that there is some genetic variation in the early leaves. Some had a homogenous color, and some showed a subtle and healthy striping. Other than that they were the same.
Yet another independent variation I saw was that some plants made several nice tiller plants that also produced and made smaller, extra cobs on them. Those without strong tillers made the biggest, (chuckling...biggest in the world of Gaspe Flint of course!), cobs. Another, also independent variation is, a few made a tiller that made a cob right at the top. I really should have photo'd that. I discovered those 3 or 4 as I was pulling the plants.
Gaspe Flint is a very real Corn, a very real food source. The kernels are a good bright golden yellow. They appear to be floury inside, and don't seem to be a super hard Flint, but more of a floury Flint. That's by appearance. I've seen ornamental "Indian Corn" that looks like there's almost no flour in them. Gaspe's kernels are puffy looking. I actually wonder if they would pop nicely.
They did not quite reach knee high! Not even at the top of the tassles! If someone wants to try, I bet a person could get 12 one gallon pots with good fertile potting soil in them, and get a small crop from 12 little Gaspe Flint Corn plants! If they could grind it, that'd probably be enough for one cornflour recipe, I don't know. How many plants do you think it'd take Thistle, for a single cook up recipe?
In a month the plants are basically full size! That's more like finger tip to elbow!

One of SeedCorn's plants could eat a Gaspe Flint Corn plant as a snack I'm sure!
Let's say there was a sudden climate change. It could happen. Bunch of volcanoes or something, and we get, worldwide, 5 years of no summer.
I'm pretty sure, GASPE FLINT CORN could save millions, even BILLIONS of lives. Grown indoors under LED lights in pots, or even in pots taken outside during the days when it is not freezing, brought indoors to warmth.
Even if not anything like that, this little Corn can easily help feed the hungry, or any family who can grind corn.