Hi ValleyHerb,
That really is strange. I agree with you, does not look like a blooming stage. I am wondering if it just needs more sun, even though your greenhouse is bright enough for other plants.
I do see in our database a photo that looks like it might be doing the same thing later in the growing season. Are they planted in the same soil mix?
It will be interesting to watch these to see how they develop in the coming months.