You've definitely got the "Color" part of Color Portrait covered! Not a conventional entry, that's for sure. Eyewave's comment is a bit harsh, but he did point out that for some reason you have a thin white border on the left and top. Not sure if that's something that occurred after you loaded the shot or not.
How lovely. Surely a portrait of Early Spring. Your title is amusing. Plants do make a little vitamin D of their own but thankfully, not enough to justify our munching on the poor crocuses ;-) This was a very very bold entry. Definitely worthy of an OOBie nomination!
I understand that a portrait can be of something other than a human being, but I think of a portrait as being of a single specimen. This is a beautiful shot of a bunch of flowers, and I think would have been much better for the Free Study challenge.
this is not a portrait and even for a flower shot it's not very well done - contrast is far too high, lights are blown, image lacks of composition, border is irregular