My 'Golden Giant' Amaranth plants are over 7 feet tall, with 15" tall and 8" wide grain heads. Some are darker redish brown, some are a more faded golden brown. I can pull off a bit of the 'grain' head and roll it around to reveal little tiny white seeds that I assume aren't fully mature yet. How do I tell when to harvest? Do I whack off the heads and hang them up to dry when its time?
when the plants are dying back, it won't get any more mature. And you probably have a few days TOPS between when it is ready and when the birds have cleaned the heads bare!!
Cut the heads carefully (they will lose seeds easy at that point) and shake and rub them inside a 5 gallon bucket or paper grocery bag. Then winnow the seed from the chaff and you are done.
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