For Valentine's Day I received two potato planter bags. We bought some seed potatoes and they have been sitting in an egg carton on our kitchen windowsill for the past two weeks. I finally got around to planting them this past weekend.
I first filled around a third of the bag with compost, then placed in the five chitted seed potatoes, and covered it in another 10 cm or so layer of compost. I then watered it really well using some rain water that I found in a container in the back yard.
Now I just have to wait until the first shoots start to appear, and then cover them with compost again. This is called “earthing up” the potatoes.