Rudbeckia maxima i think. You don't remember planting it? Or is that a neighbors yard...

Thank you, location can be important in identifying a plant. I would say that carol23 has correctly identified that this is some type of Physalis, and several species of Physalis are found throughout Ohio.

thanks hortster, 2 of my other friends also said it is a California Poppy. Here is a link that might be useful: California Poppy

Also called sundrops! Very hardy with a great yellow. Just pull them out where you do not want them. They will grow back by next year through underground roots. One plant spreads in a circle into 8 or so. It makes nice large beds of color at a good time of the season but after blooming the stem drys back to an unsightly stick. It is worth that drawback though. You will find it uproots easy for removal or transplanting.