Young child wants ID for a plant in his school garden

Question

"B" is 4 years old. That is his hand with the coin for size reference.

Added 2 pics, and info. Mom said: "The leaves look like grass blades. They're pretty tall and the director said they sprouted up super quickly. They don't smell oniony." They also took a leaf picture, as requested. Thanks all, for your input! :)

My original post:

My friend's young child is wanting an ID on this plant that has sprouted up in his nursery school garden (located in New York City).

His Mom asked me: "Diane can you name that plant? (The one with the white orb with the green shoot sticking out of it) They sprouted up on their own at B's school garden and no one can identify it."

So...I could probably eventually ID this one for him. (I figure that it is in the onion/scallion family.) But, we would rather include the kid in this, for his school project. His Mom can read him your questions, clarification requests, and answers. I will pass on more pictures and info as it is supplied to me. (I am in Virginia, not on location in NY.)

This should be a nice switch for everyone after the difficult ID's that I have asked for in the past. Please play along. Thanks! :D

Garden location NYC, NY. USA

! []3[B's mystery plant]4

Answer 1

Expert botanic uses many senses to identify a plant, but they know the dangers of plants.

For such plant, a simple touch will tell you (by smelling the air or the hand) if is a garlic species (Alium sp.). But I don't recommend people to touch plants they don't know. Some are poisonous at minimal contact.

Answer 2

Short answer because a longer one isn't needed. Answering on my phone so limited in formatting the link. I believe it to be Egyptian walking onion.

Egyptian Walking Onion