Can You Tell Me What This Plant Is.

Question

This plant is four feet tall, and looks like an onion on the top, it doesn’t appear to be flowering. We have Alliums that have flowered, this is not the same.

Answer 1

Did you mean to attach a photo? I didn't get one. I looked up some onion lookalikes in England and the invasive plant Three Cornered Leek came up as well as Few Flowered Garlic and some lilies.

If it flowers, you will have a better idea. All of the above will flower.