How do I tell what kind of squash plant that I planted in my yard?

Question

I planted a squash plant that i got from kmart as a seed. Know i do not remember what type it is. how do i tell when to pick it? the squash are green and they had yellow flowers that fell of them. when they die, they turn yello. Know a lot of them are dying. Do i pick them or is it time to pick them

Answer 1

Is it zuchini?