Every year that I garden, I try to find new and easier ways to do things. One of my more recent discoveries is Potato Chitting!

For many gardeners in North America, potato chitting is an unknown concept. The word “chitting” itself, is new for most people. However, potato chitting is an old fashioned gardening term, that has been practiced for generations.

There are many reasons why you should consider chitting your potatoes. I will tell you why you should do it and show you how easy it is!

I love discovering new gardening techniques. When I came across potato chitting the first time, my mind was blown! I couldn’t believe how something so easy, could help my potato harvest.

What is potato chitting?

Potato chitting is the process of pre-sprouting your potatoes. By exposing your seed potatoes to light, you are encouraging them to produce shoots, prior to planting them out. The shoots produced are strong and hardy. This is contrary to what we find in grocery store potato bags, or on potatoes stored in a dark place – long lanky white shoots – that have no strength at all. Those potatoes are reaching and looking for light. Potatoes that are placed near a light source don’t need to stretch in search of light. Their shoots are short and strong, just what you need for potato planting.

Many people will say that they’ve successfully been growing potatoes without chitting (pre-sprouting) and never had a problem with their harvests. I felt the same way about my potato harvests in the past. The plants grew well and produced beautiful green leafy growth. However, upon harvest I often found that I was searching in the soil for more potatoes, while feeling that my harvest fell short.

Last year, I attempted chitting my potatoes for the first time and ended up with a much larger harvest, than in previous years.

It was actually my first bumper crop.

Reasons to Chit Your Potatoes:

• Chitting gives your seed potatoes a head start
• This head start gives you an earlier potato harvest of about two weeks.
• Chitting produces a larger crop.

Gardeners in the north have a shorter growing season and often feel that they are chasing the clock. If they don’t get their crops in on time, they may not be ready for harvest before the first frost. By giving your potatoes warm conditions and the light they need, they will develop strong shoots, that continue to grow after planting outdoors. This time savings is very effective if your season is short, or if you set your potatoes out later than recommended.

Kennebec potatoes after chitting for 2 weeks.

By giving your potatoes that head start, it encourages them into growth mode, before they get planted out. If a potato gets planted out, without chitting, it will take two to three weeks for that potato to begin growing and sending out shoots. This two to three weeks time savings will ultimately produce a potato crop that is ready for harvest, that much earlier.

Potato chitting is most effective for early potato varieties, which benefit from chitting by being ready for harvest much earlier than non-chitted early potatoes. Choose varieties like, Norland, Purple Viking, Pacific Russet, Red Gold, Purple Majesty and Yukon Gold.

In my experience, a chitted potato produces more tubers, than a non-chitted potato. As a result, you benefit by having a larger harvest. I believe this is due to a properly chitted potato having healthier and stronger shoots.

Seed Potatoes vs. Store-bought Potatoes

I always recommend purchasing seed potatoes for potato planting. Seed potatoes are guaranteed to be disease and virus-free. They are specifically selected and developed to produce a better quality potato, with a higher yield. With seed potatoes, you are able to choose which variety you would like to grow. There are early, second early, mid and late season potatoes. There are also heritage and rare varieties. By investing in seed potatoes, you are guaranteed to have your potatoes sprout and produce a crop of potatoes, that will not be harmful to your soil and will not leave any pathogens for the next year’s crop.

Store-bought potatoes are often sprayed with a sprouting inhibitor, in order to have a longer shelf-life. If they do sprout, it’s impossible to know where those potatoes grew and if they carry any soil-borne pathogens. Many pathogens take many years to leave the soil, if at all and can infect future crops.

In addition, there are few varieties available at the grocery store. The most common being, Yukon Gold, Red, White, Russet and Fingerling.

Why take the risk and waste valuable time and space with potatoes that may carry diseases or were sprayed with chemicals. If anything, be sure to choose organic varieties, since they wouldn’t have been treated with sprays.

How to Chit your Potatoes:

Chitted potatoes, displaying strong stems.

Tools:

• Seed Potatoes
• Egg cartons or a low-sided flat box
• Newspaper (if using a box)
• A window
• Cool room, such as a garage, basement, greenhouse or shed, with temperatures above 50F (10 celsius)

Steps:

1. Plan to begin chitting your potatoes about 6 weeks prior to planting them out. Use the Outdoor Planting Calculator to find your outdoor planting day and count back by 6 weeks.
2. Remove your seed potatoes from their packaging and examine each one. Look to see where the “eyes” are located. This is where the stems will develop and will look like little dimples or nubs, depending on their current stage of development. Also look for any moldy potatoes and discard those.
3. Remove any long stems, if any are present. These stems developed from a lack of light. They are too weak to plant into the ground and will regrow with stronger stems when chitting.
4. Stand the potato tubers, with the most eyes upright, in egg cartons or a flat box. If using a box, I would recommend adding a layer of newspaper to the box, before adding the potatoes.
5. After all the potatoes are in their respective egg cartons or boxes, set them in a cool room near a window and leave them to sprout and develop stems. Don’t allow them to freeze.
6. Be sure to label the potatoes prior to leaving them. If you have more than one variety, it is very easy to forget which is which.

What to do with your potatoes after they have chitted?

After the potatoes have chitted and produced healthy stems, plant them out as you would into containers or the garden. Wait until the temperature is above 50F (10C). Potatoes can take cool temperatures, but if frost is expected, either cover the potato foliage with a blanket, row cover or hill them up with soil. To find the best day to plant out your potatoes, please refer to my Outdoor Planting Calculator.

Before planting, before sure to remove all but 2 to 3 stems from each potato. Any more than that and your seed potato will be weakened. If your potatoes are large and you would like to, you may cut up your potatoes, so each piece has 2 eyes. Be sure to leave them to dry for 1 to 2 days, before planting out. Otherwise, the wet cuts may rot in the soil.

Plant out your potatoes as you would, in trenches or containers and be sure to hill them up as they grow.

I hope you give potato chitting a try. If you have any questions, please feel free to email me or leave a comment below. Also, if you have chitted potatoes in the past, I would love to hear about it. Please share your experience in the comments section.

Good Luck and Happy Gardening!

Here are the tools that I mentioned in the post.