The garlic should be planted about a thumb length deep and a hand length apart.
Potatoes
Wait for the potatoes to start budding, then simply plant the whole potato in the ground.
After 1 month they will start to grow leaves which you could add to your food specifically salad.

Image Credit: Daisy Creek Farms with Jag Singh via YouTube
Lettuce
Cut the bottom part of the lettuce and plant that part with the flat end down.
Celery
Celery grows very easily, just cut the bottom and plant it in soil.
It will regrow only after 2 weeks.

Thats the time to transfer them to a pot or your garden.
14 Store-Bought Vegetables & Herbs you’re able to Regrow
