Small potatoes can be planted whole, but larger potatoes (bigger than a golf ball) should be quartered with a clean knife ($95, Williams Sonoma) before planting. Make sure each piece includes an eye or bud. To prevent rot, let the pieces dry for a couple of days before planting.
Tubers weighing between 1.5 ounces but under three ounces should be planted whole. Three- to five-ounce seed tubers should be cut into two pieces. Five- to seven-ounce tubers should be cut into three pieces.
Cutting Potatoes Before Planting
This will begin the sprouting process. A day or two before planting, use a sharp, clean knife to slice the larger seed potatoes into smaller pieces. Each piece should be approximately 2 inches square, and must contain at least 1 or 2 eyes or buds. Plant smaller potatoes whole.
Cut them in half, or if the potatoes are really large, cut them into quarters. Make sure that each chunk of potato has at least one eye, which is a small depression in the surface of the potato where the roots sprout. If you need to cut seed potatoes, it is best to wait at least four to seven days before planting them.
If your seed potatoes are especially small, you can plant them whole, but most of the time, seed potatoes should be cut into chunks that have at least two eyes each. Cutting up your seed potatoes helps you make the most of the seeds you have and maximize your crop.
Small potatoes can be planted whole, but larger potatoes (bigger than a golf ball) should be quartered with a clean knife ($95, Williams Sonoma) before planting. Make sure each piece includes an eye or bud. To prevent rot, let the pieces dry for a couple of days before planting.
Seed potatoes can be cut in half before planting, to increase your crop of spuds.
You'll want to plant your potato sprouts within 2-3 days of cutting. Ideally, you will want the skin to dry enough to seal out disease but not too much so that the sprouted parts dry up. You do not need to store the sprouts in water or soak them before planting.
To cure them you simply need to let the cut potatoes sit in an airy, dry place that is out of the sun for 2 or 3 days. The cut side of the potato will dry and harden and get a leathery texture. This “hardens” up the cut side of the potato and helps keep soil born diseases out of the potato plant.
Potatoes are best grown in rows. To begin with, dig a trench that is 6-8 inches deep. Plant each piece of potato (cut side down, with the eyes pointing up) every 12-15 inches, with the rows spaced 3 feet apart.
You should get about four pieces from an average-size seed potato. Fingerling potatoes have many eyes, and can produce as many as six seed pieces.
"Plant" your potatoes by placing them on the surface. Spacing is the same as normal planting, so early varieties in a bed system should lie 14-16 inches (35-40 cms) apart in every direction (in rows you should allow around 12 inches (30 cms) between plants and 18-20 inches (45-50 cms)).
“Potatoes grow well in loose loamy soils and some areas of sandy loam soils where rainfall is higher. The soil needs to be ploughed and free of weeds before using the seed bed former which is also known as the rotary ridger and prepares the soil to give a bed with consistent tilth with good aeration.
Like garden-grown potatoes, container-grown potatoes need rich, well-drained loamy, soil. A mix of potting soil and compost with added sand (about 20% of the total) serves potatoes well. Add a handful of well-balanced organic fertilizer as you're making your soil-compost mix.
You shouldn't eat the sprouts because they contain solanine, chaconine, and other toxic glycoalkaloids. These compounds can have serious side effects, including neurological and digestive symptoms like headaches, vomiting, and diarrhea ( 6 , 7, 8 , 9 ).
When to Plant Potatoes. Potatoes grow best during cooler weather. Plant potatoes 2-4 weeks before the last frost in the spring, when the soil temperature is at least 40 degrees F. In warm climates, potatoes are planted from January to March and harvested between March and June.
You can plant some potato varieties as late as July 1st – as long as you live in a mild climate. If you want to store your potatoes over the winter, late season potatoes are the best option (since harvest comes closer to winter).
You can certainly plant an entire seed potato in the ground after it sprouts. However, there is another way to get more plants and more potatoes: by planting potatoes from eyes. First, cut the potato into several smaller pieces. Try to leave one sprouted “eye” on each piece of potato.
You buy a bag of potatoes and before you can use them, they begin to sprout. Rather than throwing them out, you may be contemplating growing grocery store potatoes in the garden. Will store-bought potatoes grow though? The answer is yes.
In a normal crop rotation plan, potatoes would only be grown in soil used for a previous potato crop every four years. If you grow potatoes in the same soil more frequently than that you risk them suffering from pests and diseases. So, when growing potatoes in containers always use fresh compost.
While potatoes can be grown from true seeds, the easiest way to grow them is by planting seed potatoes or tubers. Supermarket potatoes might produce potato plants but might also introduce disease to your garden that can take years to eradicate.