I have successfully grown poinsettia from SEEDS
Yes that's right, SEEDS. Some of you might not know this but poinsettias don't always grow as those small little houseplants everyone keeps during christmas, in their native habitat in central Mexico (which just so happens to be where I live) they instead grow as fairly big trees, measuring around 2 stories tall and they're generally 50% wider than they are tall. And it's because of this that I presume many people have planted them around my city since they do well and are easy to get, leading to there being a good amount of these mature form poinsettias around here. And seemingly, the presence of various poinsettia trees around here has led to at least one of them growing seed pods with viable seeds on them, which I harvested after noticing the tree the seeds were coming from and decided to grow them myself.
Now, the problem with this is that there is damn near no information about growing poinsettia from seeds, with some websites even stating misleading information such as saying you have to cold stratify the seeds for multiple months (which by the way, how does that even work? Poinsettia naturally live in semi-arid warm mountains where not once does it ever snow, poinsettias themselves are not frost hardy in the slightest dammit!) so I had to go off intuition and guess how they grow in their native climate (but to be honest I didn't have to do much guessing since I already live in it though). As such, all I did was stick the seeds about 2cm underneath a pot with very organic soil and tried to water only when the top half of the soil seemed completely dry, after that the seeds germinated fairly quickly, taking only 1 and a half weeks for the seedlings to pop out of the soil and 2 weeks for the seedling leaves/cotyledons to split open from the seed shell and begin to grow. Also, the cotyledons seem to be covered in what I believe to be the seeds endosperms after they rise from the ground, this approximately 2mm thick crust eventually thins away and becomes easily peelable and removable from the cotyledons (see pictures 8-9) which allows the cotyledons to fully expand and grow along with the seedling.
I am particularly eager to share the last part related to the cotyledons, because even though there's a few articles on the internet talking about how to germinate the seeds there are none and I really do mean NONE that go in depth about the appearance of the seedlings and cotyledons or show pictures of them, or atleast none that I could easily find. So pretty much, you're looking at the only picture of poinsettia seedlings on the internet =b.
I find it really strange that such a well known and iconic plant as the poinsettia, being found on every corner of the globe and all, has such a poorly documented registry on its seeds and seedlings, most likely because you can only harvest seeds from the old and tall arborescent forms of the plant which is a luxury not everyone seems to have. But I'm here to make that change, at least a little bit. I will keep everyone updated with how the seedlings grow over the months, hopefully my post reaches people who are just as interested in growing these things from seeds as I am