I would hazzard a guess that it's still not quite ready. It appears that the tassles have started to dry out but usually they dry out completely and go brown when it's ready.

If its the type where you stir fry the whole cob I would think that would be harvested when slightly immature though!

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My Majesty made for him a garden anew in order
to present to him vegetables and all beautiful flowers.- Offerings of Thutmose III to Amon-Ra (1500 BCE)