When do you stop hilling potataoes?

You should stop hilling potatoes when the plants reach about 6-12 inches in height, typically when they have developed several sets of leaves. This usually occurs a few weeks after planting, depending on the variety and growing conditions. Continuing to hill after this point can lead to excessive moisture retention and rot. It's best to cease hilling when the plants begin to flower, as this indicates they are nearing the end of their growth cycle.