Growing Potatoes

Planting, Growing, and Harvesting Potatoes

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Wondering how to grow potatoes? We’re here to help! The taste and the texture of homegrown potatoes are far superior to those of store-bought spuds, especially the early varieties. Here’s how to plant, grow, and harvest potatoes in your garden.

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.

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

How 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. For mature potatoes, wait 2 to 3 weeks after the foliage has died.
New potatoes should not be cured and should be eaten within a few days of harvest, as they will not keep for much longer.
Dig potatoes on a dry day. Dig up gently, being careful not to puncture the tubers. Avoid cutting or bruising potato skin. 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.
For the biggest and best potatoes, harvest only after the plant’s foliage has died back.
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.
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 them in a cool, somewhat humid, dark place. The ideal temperature for storage is 38 to 40°F (3 to 4°C).
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

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Potato growing from potato boxes

I am growing potatoes from potatoes I purchased at WM they were from the actual seed area so they are not store bought potatoes like you would purchase to eat. I am growing them in potato boxes. I found the idea from the Internet. I built the boxes 8 inches and the potatoes grew great the plants are 3 foot tall as they grew I added more wood to the sides and added top soil as they grew. They are now dying I do not know why. The plants leaves have a brown area on them with holes like something is eating them. I have put down grub x and 7 dust the plants what can be killing them?

Brown Potato Leaves

It appears that your potato plants might be suffering from late blight. Watch this video to learn more about how you can stop the spread and save your potatoes.

Potato growing from potato boxes

From Walmart? If they aren't seed potatoes, don't try it. Most potatoes sold for eating are sprayed with sprout inhibitor and will not sprout. However, if they are sold as organic potatoes they will not be treated with inhibitor, and will probably grow just fine.

cutting off tops

Can I cut off the tops of my potatoes as they have taken over and I cant see where the actual plant is to lift and keep damaging the potatoes.

potatoes didn't flower and are dying

I planted my potatoes in a grow bag and hilled them quite often. I thought they were doing great until they started dying but didn't flower. Does that mean that I won't have any potatoes?

Not all potato plants flower;

Not all potato plants flower; you still might get potatoes under the ground. Check carefully in the soil to see if you feel any potatoes developing.

Little red potatoes growing

I dug down quite a bit and found some little reds growing so I tried to replant them and water them well. Hopefully that will work. After digging the soil seemed really to be in good condition as I was suspicious that I may have watered them too much.

most of the plants are dead(3 still growing)

I decided to go ahead and see what I had in my bag. I planted Pontiac Reds in a potatoe bag and followed the instructions pretty well. I thought they were OK until they started to die and they also never flowered. You told me previously that sometimes they don't flower. I have a lot of very very small red potatoes. Some no bigger than a marble. I want to try it again but am fearful that I missed something. I took a picture but it appears there is no way of sending it to you. I am looking for any suggestions so that I can have a fruitful crop. I also have two other potato crops growing in planters and they also seem to be doing OK with flowers. I am going to wait on these as they are still doing great or at least that is the way it looks.

Blue Potatoes-First time Grower

My daughter brought me home some baby blue seed potatoes from her work, so I dug a trench and planted the potatoes, when they got a little taller I put some dirt around them, but that has been it. I have these gorgeous really really tall potatoe plants, that have flowered. I didn't hill the dirt, ever again. So my worry is will I have potatoes? One of them has one of those poisonous berries growing on them. The plants have no bugs and look super healthy. Being a first time grower I had no clue what I was doing, I was excited about attempting to do a garden. The plants are tall so I used some stakes and string to help hold them up.

Trenches that are 7 to 8

Trenches that are 7 to 8 inches deep should require less hilling. A relatively shallow trench of about 4 inches would need 6 to 8 inches of hilling. How deep was your trench? Also remember that part of the reason you hill is to keep keep the spuds moist; the soil helps with that. When you reach the desirable height, consider mulching. Potatoes need at least 1 inch of water per week. We hope this helps and that you have a hefty harvest!

Last years organic potatoes

I used left over potatoes that I stored poorly as my seed potatoes. Is that bad? I just read your answer to someone else not to use last years potatoes. Some were green as well. Will they be ok? If not, why? What is different about "seed" potatoes as well, thank you:)

seed potatoes

Grocery store potatoes are for eating; they are treated with a sprout inhibitor so they will have shelf life in the store. (Sure, eyes may sprout but not like those that appear on seed potatoes.) Seed potatoes are grown to produce edible potatoes. Certified seed potatoes are disease-free. Sources we consulted do not recommend using your harvested potatoes (from seed potatoes) for the next year’s crop. Opinions are mixed. If you do use your harvested potatoes as seed potatoes, strict storage conditions are advised (storage in a coo [50°F] area after harvest, then a 3 to 4 week period of hardening off/outdoor exposure and high humidity—also called greening. Crop rotation is also highly recommended. But that will not guarantee a desirable crop. Using green spuds is another topic on which growers take different sides.

Am I doing it right

I planted a potato about 8 weeks ago. I do not want it to be poisonous but I don't know if I am growing it right. I am giving it plenty of water and if it grows something i don't want it to be poisonous
Please help

Poison potato?

Eight weeks is a long time to wait for your potato plant to send up some greens. If there is no sign of life coming from the soil something is wrong and nothing is growing.

Taters

I guess I forgot to completely inform you on everything. I started it with chits, about 6 inches from the bottom. The leaves grew through, every few inches I would cover them again. Now I am about 6 inches from the top of the bag. And something (I think it was an animal) ate the tops off. So again. Will my taters inside be okay? Will they re sprout? Or should i just dump the bag and start over?
Thank you again, and I apoligize for the first entry.

topless potatoes

Without the tops, William, you might as well discard the bag. The leaves produce food for the tubers. Without the leaves, growth stops. Sorry to be the bearer of the news…

Taters

I have taters growing in a bag. Well something happened to the tops of the plants. Will they regrow? Will my taters inside the bag still grow? Or do I just empty the bag and start over?

planting potatos

hello this is the first year that i planted potato and when i did i just planted the whole potato and now there are like 17 or more plants all in a cluster can you tell me what will happen am i going to have a lot of potatos or am i going to have just a few how many potatos can i get from one stalk

Potato mania

Hi, Ron, It’s hard to know how many potatoes you might get, there is so much involved—soil, moisture, bugs, weather, etc., not to mention type of spud. Hope for the best.

2nd year yield

Hi there, we have a lot plants come up from last year's plot and were wondering if the yield would be as good as last year or if it's worth ditching them now and planting a new batch? The plants are about 16 inches at the moment.

last year's crop

Last year’s potatoes should not be used as seed potatoes, so, yes, plant a new crop—but not in the same place! Rotate the plot location!

Potatos

Our potato's are coming up, should we cover the hole plant with straw ? Or should we just let go ? They do not have flowers on them yet.

covering potatoes with straw mulch

If you are growing potatoes through straw mulch, once your potato plants poke up from the first layer of straw (which is about 3 to 4 inches) and reach a height of about 4 to 6 inches, then you can cover the whole plant with another layer of straw mulch (some gardeners leave about 1 inch of the plant exposed when covering them, so that the leaves can still be exposed to light and make food for the plant). Continue doing this (covering the plant with straw once exposed plant height is 4 to 6 inches) until you have a layer of straw that is about 12 or so inches high. Then monitor the plant as it grows; do not cover the entire plant again, but do replenish the straw if it gets dislodged or flattened – you don’t want sunlight to get to the tubers, or they’ll turn green and become bitter and not safe to eat.

planting potatoes left from last year

I have potatoes left from last year. They have sprouts approx 12 to 16" how do I plant them?

Just pulled in a couple of

Just pulled in a couple of pounds of reds that got planted after they sprouted in the cabinet. The surprise wasn't that they grew, but that they grew in the Caribbean, with soil pH around 7.5. Even 90 degree weather didn't stop these guys

Russet Potatoes

How long does it usually take for a russet potato to grow??

potato growing time

Days to maturity for a russet potato is 85 days.

Potato Bugs

Ive had problems with the potato bugs last year i tried something that seemed to work very well i mixed a tablespoon of liquid dish detergent with a gallon in a pump sprayer and sprayed it on my potatoes . this worked very well for me. i hope this will help someone who has a problem with potato bugs.

That stuff works great! I

That stuff works great! I use it on all of my edible plants with bug issues. Great & gentle on herbs for white flys!

Little project

I have three potatoes that my family neglected to cook, and accidentally left them to grow in a cabinet. I decided to leave them there, on some paper towels on a plate. I water the towel once a day, and it's interesting how there are roots spreading across it. There is no place for me to plant them in our apartment complex, though I think I can get a pot for them