Fill the inside of the tyre casing loosely with good topsoil, and then set 3-4 potato seeds into the soil. Use sticks or rocks to keep the casing rings spread open.

Add enough soil to the tyre “hole” to bring it to the same level as the soil inside the tyre.
When the new potato plants are eight inches tall, add another tyre and soil to the stack, as in the first level.

Repeat the process for your third, and if desired, fourth tyres.
As you add tyres and soil to the stack, the 8″ of the potato plant stalk is covered with soil.
By doing this, the existing stalk essentially reverts to a root status and the plant is forced to grow upward to once again find the sunlight which it needs.

By raising the soil level this way (in 8″ increments) the potato plant is able to continue growing without suffocation, and at the same time you are creating a 24-30″ tap root from which many more lateral roots can develop.

Each lateral root can then produce additional potatoes (at 3-4 levels rather than the normal single layer).

When you water, be sure that the soil is thoroughly moistened all the way to the base of the pile.
The tyres act as an insulator and heat “sink” for your potatoes.

This added warmth will cause the lateral roots (where the new potatoes form) to multiply more rapidly, thereby giving you more potatoes.

When you need fresh potatoes next fall and winter, harvest the crop from the top tyre, and remove it from the pile.

If you need more potatoes just take more tyres.

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Tight of heavy soils lead to production of misshapen tubers that mature more slowly than in lither soil, and harvest is more difficult.
Planting potatoes in wet soils often results in poor emergence, and many times the tubers harvested from these fields do not store well.
Sites that are highly susceptible to erosion should be avoided for growing potatoes because of the tillage required prior to planting and the soil disturbance at harvest.
Cover crops such as rye or wheat often help to protect the soil during the winter. Rye or wheat should be planted at a rate of 100 to 120 pounds per acre by mid-October.

Of seeding of a cover crop is delay beyond mid-October the soil protection from the cover crop will be reduces, but the cover crop will still be the some benefit.

Proper crop rotation can greatly enhance potato quality by helping to reduce disease, insect, and weed problems and can help increase soil organic matter content.
Sites with inherently lower pH are better suited for growing potato than soil with a high pH.

Although potatoes grow well at higher pH, a disease called scab is more likely to cause an infection if the tuber when the pH is above 5.5. Therefore, the pH for growing white potatoes should be held below 5.5 if common scab is a problem.

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