Growing Potatoes

Planting, Growing, and Harvesting Potatoes

Rate this Article:

Age-Old Wisdom meets Modern Tools

The Old Farmer’s Almanac Garden planner Makes planning a garden easy. Free 7 day trial – no credit card required

Our Potato Growing Guide covers planting, growing, and harvesting one of our favorite vegetables! Also, see tips on how to store potatoes to keep them fresh—and some homemade potato recipes.

About Potatoes

“What I say is that if a man really likes potatoes, he must be a pretty decent sort of fellow.”
–A. A. Milne, English writer (1882–1956)

Potatoes like cool weather and well-drained, loose soil that is about 45 to 55°F (7 to 13°C). In warmer climates, potatoes can be grown as a winter crop.

Folklore offers many “best days” for planting potatoes:

Old-timers in New England planted their potato crops when they saw dandelions blooming in the open fields.
The Pennsylvania Dutch considered St. Gertrude’s Day (March 17, aka St. Patrick’s Day) to be their official potato-planting day.
Many Christians believed that Good Friday was the best day to plant potatoes because the devil holds no power over them at this time.

All of these “best days” suggest an early spring planting! (See more about planting below.)

Planting

When to Plant Potatoes

Potatoes can be started 0 to 2 weeks after last spring frost. You may plant earlier, as soon as soil can be worked, but be aware that some crops may be ruined by a frost or wet soil. Find your local frost dates here.
However, if have a “late” spring, it’s not too late to plant potatoes through April (depending on where you’re located). Some folks even plant through June, especially in containers or potato towers.

How to Plant Potatoes

With a hoe or round-point shovel, dig a trench about 6 inches wide and 8 inches deep, tapering the bottom to about 3 inches wide.
Potatoes are best grown in rows. Space rows about 3 feet apart.
Spread and mix in rotted manure or organic compost in the bottom of the trench before planting. (Learn more about soil amendments and preparing soil for planting.)
In the trench, place a seed potato piece, cut side down, every 12 to 14 inches and cover with 3 to 4 inches of soil.
The best starters are seed potatoes from which eyes (buds) protrude. (Do not confuse seed potatoes with potato seeds or grocery produce.) Use a clean, sharp paring knife to cut large potatoes into pieces that are roughly the size of a golf ball, making sure that there are at least 2 eyes on each piece. (Potatoes that are smaller than a hen’s egg should be planted whole.)
If you are cutting up potato pieces for planting, do so 1 to 2 days ahead of planting. This will give them the chance to “heal” and form a protective layer over the cut surface, improving both moisture retention and rot resistance.
12 to 16 days after planting, when sprouts appear, use a hoe to gently fill in the trench with another 3 to 4 inches of soil, leaving a few inches of the plants exposed. Repeat in several weeks, leaving the soil mounded up 4 to 5 inches above ground level (this is called “hilling”).
After the potato plants have emerged, add organic mulch between the rows to conserve moisture, help with weed control, and cool the soil.

Check out this video to learn how to plant potatoes.

Care

How to Grow Potatoes

Do not allow sunlight to fall on the tubers, which develop under the surface of the soil, or they will turn green.
Do the hilling in the morning, when plants are at their tallest. During the heat of the day, plants start drooping.
Maintain even moisture, especially from the time when sprouts appear until several weeks after they blossom. The plants need 1 to 2 inches of water per week. If you water too much right after planting and not enough as the potatoes begin to form, the tubers can become misshapen.
The last hilling should be done before the potato plants bloom, when the plant is about 6 inches tall. Hoe the dirt up around the base of the plant in order to cover the tubers as well as to support the plant.
Hilling keeps the potatoes from getting sunburned, which can cause them to turn green and produce a chemical called solanine. Solanine gives off a bitter taste and is toxic.

Pests/Diseases

Potato Scab: Most likely caused by a high soil pH. Remember: Potatoes like acidic soil (do not plant in soil with a pH higher than 5.2). Dust seed potatoes with sulfur before planting. Some readers suggest adding pine straw on top of the potatoes when planting for natural anti-bacterial elements.
Colorado potato beetles need to be hand-picked and predatory birds will often eat them. While they’re in the nymph state, they can be controlled with Diatomaceous Earth (food grade) which is a non-toxic way to control pests in the garden. If they continue to be a problem, a few sprays of Spinosad, an organic pesticide, will get rid of the beetles. Always use products at dawn or dusk to avoid harming beneficial insects.
Aphids
Flea Beetles
Early/Late Blight

Harvest/Storage

When to Harvest Potatoes

“New potatoes,” which are potatoes that are purposefully harvested early for their smaller size and tender skin, will be ready for harvest 2 to 3 weeks after the plants stop flowering. New potatoes should not be cured and should be eaten within a few days of harvest, as they will not keep for much longer.
For mature potatoes, wait 2 to 3 weeks after the plant’s foliage has died back. The tops of the vines need to have completely died before you begin harvesting. Cut browning foliage to the ground and wait 10 to 14 days before harvesting to allow the potatoes to develop a thick enough skin. Don’t wait too long, though, or the potatoes may rot.
Toughen up potatoes for storage before harvest by not watering them much after mid-August.
Dig up a test hill to see how mature the potatoes are. The skins of mature potatoes are thick and firmly attached to the flesh. If the skins are thin and rub off easily, your potatoes are still too new and should be left in the ground for a few more days.
Potatoes can tolerate light frost, but when the first hard frost is expected, it’s time to get out the shovels and start digging potatoes.

How to Harvest Potatoes

Dig potatoes on a dry day. Dig up gently, being careful not to puncture the tubers. Avoid cutting or bruising potato skin. Damaged potatoes will rot during storage and should be used as soon as possible. The soil should not be compact, so digging should be easy.
If the soil is very wet, let the potatoes air-dry as much as possible before putting them in bags or baskets.
Don’t leave the potatoes that you have dug in the sun for long after they have been dug up from your garden, otherwise your potatoes may turn green. Green potatoes have a bitter taste and if enough is eaten can cause vomiting and diarrhea. Small spots can be trimmed off, but if there is significant greening, throw the potato out.
Allow freshly dug potatoes to sit in a dry, cool place (45–60°F/7–15°C) for up to two weeks. This allows their skins to cure, which will help them keep for longer.
After curing, make sure you brush off any soil clinging to the potatoes, then store potatoes in a cool, dark place, preferably 45 to 50 °F, with good ventilation. When properly stored, potatoes will remain fresh for up to a month. Throw away potatoes that are shriveled, green or have many sprouts.
Do not store potatoes with apples; the apples’ ethylene gas will cause potatoes to spoil. Never store potatoes in the refrigerator.
Whether you dig your own potatoes or buy them at a store, don’t wash them until right before you use them. Washing potatoes shortens their storage life.
Find more tips on getting potatoes ready for the root cellar.

Potatoes
The fruit (metaphorically speaking) of a very happy potato plant!

Recommended Varieties

There are more than 100 varieties of potatoes. Tan-skinned and red-skinned varieties with white flesh are the most common in home gardens.

Early Varieties:

‘Irish Cobbler’: tan skin, irregular shape
‘Norland’: red skin, resistant to potato scab
‘Mountain Rose’: red skin and pink flesh, resistant to some viruses

Mid-Season Varieties

‘Red Pontiac’: red skin, deep eyes
‘Viking’: red skin, very productive
‘Chieftan’: red skin, resistant to potato scab, stores well

Late Varieties

‘Katahdin’: tan skin, resistant to some viruses
‘Kennebec’: tan skin, resistant to some viruses and late blight
‘Elba’: tan skin, large round tubers, resistant to blight and potato scab

Blue Potatoes?

We also love All Blue Potatoes! They’re delicious and, well, they’re truly blue!

See our page on how to choose the best potatoes to grow in your garden for more info!

Wit & Wisdom

If your garden soil is very rocky, put the seed potato pieces directly on the ground. Sprinkle with a mix of soil and compost. Cover them with straw or leaves, hilling the material up as the potatoes grow.
Practice yearly crop rotation.
See our video on how to grow potatoes in a trash can, the easiest-ever container garden!
Before planning your garden, take a look at our plant companions chart to see which veggies are most compatible with potatoes.
Did you know: Potato promoter Antoine Parmentier convinced Marie Antoinette to wear potato blossoms in her hair.
Grated potatoes are said to soothe sunburnt skin.

Recipes

Cooking Notes

Check out our recipe archives to find potato recipes that range from plain to fancy!

Reader Comments

form.antibot { display: none !important; } You must have JavaScript enabled to use this form.

Very informative

potatoe storage

One of the comments was not to keep the potatoes in the fridge. I always keep them there and never had a problem. Especially in the summer when it's warm and humid.

Potato growing in pots

I live on the central coast of California and we have mild weather all year round and never get any frost. I have to do all my gardening in pots on my deck because of the deer who eat everything! When I have potatoes from the store that are going bad I cut them up with eyes on all the pieces and plant them in any pot that has room. I get potatoes coming up all the time during the year depending on when I plant them. Most of them are pretty small but they still taste good. I didn't know about "hilling" the potatoes and will try that hoping I get some larger ones. Thanks for your potato growing article.

replanting potatoes

I have just begun to harvest my early crop of potatoes, I tried it in pots which didn't turn out so well, about 2 decent sized potatoes per pot (yukon golds which don't yield much anyway) but lots of tiny potatoes which would make great seed potatoes. My question is can I replant those right now for a second harvest or do potatoes need chill hours before they will sprout again? I have not been able to find the answer to this anywhere on the internet so please reply :) Thank you!

replanting or using harvested potatoes

Potatoes don’t need chill hours per se but they do need a dormancy-type period. The growing period is spring to summer, when the soil and air are cool. It’s too hot to plant now and the daylight hours are on the wane. You can save some spuds to plant next season; be sure they are free of disease. Certified seed potatoes usually are; don’t underestimate the value of that. Brush, don’t wash, off any dirt. Store them in the dark at temps between 34°F and 38°F.

Replanting potatoes

I've never heard they need a chilling time, so I don't think so. I recommend you give it a shot, nothing to lose. Only thing might be it's too hot & they don't like it, or not enough time between now & winter to fully develop. But, you'd still get something, I'm sure.

Hilling

How high can I continue to hill redskin potatoes. They are about 3 1/2 feet tall now, and I am continuing to add to the hilling. When should I stop if at All?> Thanks

"New" Potatoes

I am growing potatoes mostly for "new" potatoes. My plants have just started to flower. Should I stop watering them? How long do I wait to harvest them? Thank you!

Planting potatoes

If I were to dig at 8 inch deep hole by 6 inches wide and then plant the potato which is then covered by 3 inches. How do you keep the trench from filling up with water when it rains since there is only 3 inches covering the potatoes?

Rain

If your soil is well-draining and not compacted, short periods of rain shouldn’t be an issue. However, if your soil is more on the clayey side and it looks like it will be very rainy when you intend to plant potatoes, plant them in a shallower trench (5–6 inches deep) and fill the trench completely at planting time to keep water from pooling. Be sure to still add more soil over top of the plant as it grows.

Too much rain

I planted my potatoes a week ago and did the trench method. A few days later, we got soaking rains and the trenches filled with water and it sat like that for the next day. It's drained since but it's still extremely wet and there's more rain in the forecast. Would you suggest digging up the potatoes and using another method for planting, filling the trenches with soil, or something else?

sroring potatoes

I store potatoes in the refrigerator drawer against advice and have no problems.

2nd planting

My first round of potatoes this season are starting to die it’s mid July. Can I plant a second go round of tubers. I’m on the East Coast of MD. and our first frost usually comes in late October early November.

start potatoes now?

It’s a tough call, that’s what makes gardening interesting. Try it. Remember that potatoes like a cool start; they are usually planted 2 to 4 weeks before the last spring frost. They’ll also need 6 hours of sun per day … as the days grow shorter… It will depend, too, on the days to maturity of the variety you plant. Finally, we wouldn’t plant them in the same bed; remember the value of rotation. Test the soil wherever you do put them. And good luck! You won’t know if you don’t try.

Potato flowers

Should I dead head the flowers that have formed on my potato plants?

Potatoes

I planted a white potato and got red potatoes... How did this happen? I mean they are still delicious, but I'm confused on how this happens.

potato mystery

Hmm. We’re stumped on this one! If it was truly a white potato, it should not have yielded red potatoes. Could it be that there was a red potato in the ground in the same area, perhaps one left in the ground from last year, that decided to sprout this year? It’s certainly puzzling!

Potatoes

It was my first time trying to grow potatoes. Will try again next year and see what happens!

Red + white = white?

We planted alternating varieties of red and white potatoes and the all produced white potatoes. It that to say that the white ones were dominant in pollination?

Potatoes sprouting

It is March and I am in zone 4. My potatoes are starting to sprout, how can I delay the sprouting until planting time, Late May, probably?

Starting from seed

Hello, I was given several potato berries and was told I could try planting the seeds for potato plant starts. I see from my customized calendar on your site that I should sow outdoors starting in March after the danger of frost has passed (I am in Seattle), but when should I plant the seeds so that the starts are ready at that time? The friend who gave them to me indicated I could start them inside as early as early as January. Could I start them outside in March as well, with a later harvest? One additional concern is a curious kitty who sometimes gets up where she shouldn’t to nibble on plants. Are these plants poisonous to cats? Thank you!

Potato berries take years

Potatoes are in the same family as tomatoes (Nightshade, or Solanaceous), and the “berries” not really good for anything. They are poisonous to eat, and the seeds inside would take several years to grow, and they would not produce the same kind of potatoes as the parent plant. The only people who pay any attention to them are growers and breeders who hope to produce a new variety.
For a reliable crop, purchase seed potatoes with eyes and look to the calendar for planting time—lucky you, in early March!

You will know when your

You will know when your potatoes are fully grown when they are bottled and cause intoxication

small potatoes

I harvested a lot of potatoes, including a lot of small potatoes, this year from certified seed potatoes. Would it be a good idea to save the small potatoes to plant next spring?

Small Potatoes

Small potatoes are no small potatoes! It would certainly be a good idea to save the small ones for replanting. Look for ones that have plenty of “eyes,” as they should have the best chance at producing.

Request for suitable fertilizer composition and chemicals

Hi,
This time my soil is highly moisture due unpredicted heavy rains. My cultivation is just 18 days old. Therefore I need your assistance to choose the fertilizer composition and chemicals to be used. In Sri Lanka we cultivate a variety called Glanora.

Teenie Tiny Potatoes

I planted my swedish fingerling potatoes about 100 days ago. Tried digging some up to hopefully get new potatoes for dinner & only found one, perfectly formed but hardly bigger than a pea! The plants haven't died back yet so will let the rest grow, but is there any chance they'll get much bigger? I'm in North Dakota so gonna run out of time soon before frost.

Tiny Potatoes

At this point, there’s probably not much chance of them getting bigger before their tops die back, but you could wait a few more weeks to see if that helps any. Sorry for your subpar potatoes and we wish you better luck next year!

Red Potatoes - Are they safe to eat right after harvest

This is my first year of harvesting red potatoes. I live in Northern CA zone, 9. Hot summer this year!! I got a nice harvest. My question is the plant never flowered. They did die back and we turned the container over and had lots of potatoes. It's been about a week, and I don't have a cool place to store them. Are they safe to eat? When will I know if they are bad or toxic?

are potatoes safe to eat

Your potatoes should be fine to eat; sometimes the weather is just too hot for plants and they do not perform as expected. One source we consulted said that some potatoes simply do not flower. But if you have spuds, enjoy them! The “cool” place should also be dark and dry, so a basement is usually good, but a closet or under a bed is fine, in a paper bag, for example—just not plastic. (Notice in supermarkets potatoes are in bags with holes.) They should last a few weeks to a couple of months at least, unless your conditions are really unsuitable. We do not suggest a fridge. Congratulations!