hope they're not weeds also.hehehe they all have halted growing and although some are months old....others are a week old ...but all look the same . once they've reached maybe 3inches it's like they've frozen in time. every day I look for suttle changes and nothing!! might as well be grass!!!haha
They're too young to make a determination yet. Give 'em another couple of months, and repost photos when they have more leaves.