|If you were hoping this is what I was talking about, they are available on Amazon
Pinterest, the corpses of all of these can be reanimated into new plants, that will eventually provide new food!
Chop off the top of a pineapple with a bit of core still attached and stick it in the soil:
Save the pit of an avocado and suspend it with toothpicks in water to grow a new tree:
Cut off the bottom of grocery store celery, stick it in the soil, stalk side up, and grow an easy new celery plant!:
For the sweet potato, cut it in half (longways) press into moist soil and cover them with plastic:
I mentioned my plan to start a zombie garden to my dad, and he told me there is in fact a whole book out there about it! The book he mentioned is called The After-Dinner Gardening Book. When looking for this book on Amazon, I discovered there is another book out there like this as well: Don't Throw It, Grow It!: 68 windowsill plants from kitchen scraps. I definitely will be seeking these books out from the library to try to grow my zombie (plant) army!