They usually perform well, yielding good crops. Even though they are excellent for growing, there is a lot of confusion about their food safety. While some people consider them to be good for consumption, others claim them to be poisonous.
In case, they are very soft and shrunken, do not eat them. Other than this, they are not dangerous for consumption. You have to take care during their preparation for cooking; what you can do is slice off the sprouts and remove green portions (if any).
Potatoes sprout under normal temperature, light, and humidity conditions, which is why they develop buds so easily. Commercial control is done by irradiation and treatment with chemicals (e.g., chlorpropham and maleic hydrazide).
At home, they can be controlled by using essential oils. However, the most effective method is to regulate the storage conditions, such as low humidity, cool temperature, and adequate air circulation.
Hence, for mass scale plantation, it is suggested to use only quality seed potatoes from a reputable supplier, which are specifically released for growing. Before 3 - 4 weeks of planting, you can place them in a wooden box or in open egg cartons (if available), so as to induce sprouting.
Select partial shade to full sun location for growing them. The soil conditions ideal for growing them are moist, well aerated, and nutrient enriched soil. About 2 - 3 weeks prior to planting, supplement potassium rich fertilizer in appropriate dose.
Select small potatoes with 1 inch length sprout, or cut them with attached shoots. Make 4 - 6 inches deep holes and plant them with the sprouts facing up. Cover with soil and ensure that you maintain a space of about 1 foot between two sprouted potatoes. Follow proper care as per directions of horticulturists.
Insert toothpicks around the potato and near the sprouts. Fill the glass jar with water and place potato with the sprouted end down. Making sure that it is not totally immersed in water, place the glass near a windowsill. Within a few days, you will notice sprouting of potato with roots in the glass.