Any of the corn dog shaped seed bearing fruit at the top of the stem that is not harvested, will "go to seed". As the seeds burst out, there is a sort of cottony, fuzzy "stuff" left over. (I don't know what it is called, lol) If you look at the second photo, it shows the seed heads after the seeds have taken flight. If you don't see some of those around, don't eat young shoots. It could be one of the poisonous look-a-likes. There should be some of those spent seed pods left over when new growth starts the next year. It takes a while for them to completely rot and fall over.