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Home » garden tutorial » Growing Onions Over Winter (in NYC)

Growing Onions Over Winter (in NYC)

Posted:6/15/21
Updated:3/17/22

Tips on how to grow onions for overwintering for a Spring harvest. Includes planting dates and tips to protect them from frost in the Winter.

woman holding onions in linen dress

We usually plant our onions in March for a Fall harvest, but last year we decided we were also going to grow onions over Winter.

The result? Delicious sweet onions that are being used in our favorite slow cooker and casserole recipes, as well as caramelized on top of everything! 🙂

onions grown in the winter with roots attached

When should I start overwintering onions?

The seeds were started indoors during August and then transplanted outside into the ground in October (October 11 to be exact). You want to make sure the onions have a few weeks to get their roots established before cold and frost sets in. This gives ample time for them to settle in to their new home before first frost hits.

Although we prefer Candy onions (variety) for Spring and Summer planting, for Winter gardening we prefer Bridger (variety) onions.

tray filled with onion seedlings.

How to Protect Onions Over Winter

After planting the onions, cover them with leaves to give them an extra layer of warmth to protect them from the cold. We are located in New York City so it gets fairly cold during Winter. You could even use garden fabric if it’s going to be especially cold.

onions in ground with leaves on top of them.

Besides keeping them covered, you really don’t have to do much more than that, but just give them a little wave, and be excited for what’s to come soon!

I also want to note that we had a large amount of snow this past Winter, and these grew under the snow without any problem. I don’t have a photo of snow on top of the onions, but here’s a snowman we made in the garden to get a idea of snow fall. 🙂

little girl in garden with snowboots on with snowman.

Time to Pick the Onions

And almost 9 months later, the onions are ready to pick and gobble up! Onions are ready to be picked when their green tops fall over, but before they turn brown.

You’ll notice that these onions are pretty big in size, bigger than our usual Spring onions. The reason for the size is they have a much longer growing time.

Depending on the amount of onions you planted, you might have quite a few to store for the months to come. Here’s our favorite method for storing onions as it doesn’t take up too much space (we’re all about using vertical space!).

Now, go pull up your onions, give them a shake and enjoy!

onion garden sign in vegetable garden.

Like our garden signs? 🙂

Recipes for your Garden Onions

  • Slow Cooker Caramelized Onions
  • Crispy Fried Onions
  • Slow Cooker Kielbasa and Cabbage
  • Cabbage Soup
  • Kielbasa and Brussels Sprouts Skillet
  • Slow Cooker Sausage and Green Peppers

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  • Slow Cooker Peanut Butter Potato Stew
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  • Slow Cooker Cabbage Beef Soup

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Hi! I'm Pamela, an artist Mom who shares family recipes. My farm is a 1,000 sq ft apartment in NYC. Let's make dinner together.

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