THANK YOU! Yes, Amaranth: I have a feeling we're going in the right direction with that. I browsed around the web and couldn't quite find any amaranths seedlings with such distinctly red cotyledons, but it does seem that once the first true leaves appear on many Amaranthus species, they do have a strong reddish tinge around the periphery.
I wonder what environmental conditions encourage cotyledons that could take on either a green or reddish cast to take on that purple-red color.
Here in eastern Massachusetts we've had so much rain and drizzle and no sun since Saturday that hardly any of the seedlings in this garden have budged much in size.
