Bring out your amaranths!
I don't really know why this one got so tall.
I transplanted it out of the pepper bed which had some composted manure in it, into a hole with some pine needles and dirt I scooped up beside the house.
None of the others come close. Still going today, in D.C./Md. area.
= new reply since forum marked as read
...let me know what you find. 
...generational strength, mehopes.
… once.
It crossed with the native pigweed, a weed in our garden. Now we have purple leaved “amaranth” (pigweed) as a weed every year. It’s easy to identify, as it’s purplish red, even as a small seedling.
Grew some to maturity this year so we could harvest some of the seed to experiment with it as a natural dye.
So I’ll have plenty of purple weeds in our garden, probably forever! 
...gonna do some conjurin'
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