Can Brussels Sprouts Survive Frost?

In the fall and winter months, Brussels sprouts are a popular vegetable to grow in many gardens. This is because they’re easy to grow and can be harvested fresh throughout the season. But what happens when it starts to get cold? Can you keep growing your Brussels sprouts through freezing temperatures?

In this article, we’ll discuss how tolerant Brussels sprouts are to cold weather, how to protect them from frost, and whether or not overwintering them is possible.

Can Brussels Sprouts Survive Frost?

Brussels sprouts are a cool-season vegetable, meaning they grow best in autumn and winter. They can tolerate temperatures as low as 10 degrees F, but if the temperature drops below freezing for an extended period of time, they’ll die. For this reason, it’s important to keep your Brussels sprouts protected during cold weather so that they can survive the winter months.

How Tolerant Are Brussels Sprouts To Cold Weather

The answer depends on a few things: how long the plants were grown, what variety you’re growing, and how much mulch you’ve applied to the plants.

Brussels sprouts can survive temperatures as low as -3 degrees Celsius if they’re young and have not been through a lot of growth yet. They will only survive up to -10 degrees Celsius if they are grown in greenhouses or covered with plenty of mulch.

If your Brussels sprout plant has been allowed to grow for several weeks without protection from winter weather conditions (or if it’s exposed), then it will die at around -20 degrees Celsius because its leaves begin to freeze first.

How To Protect Your Brussels Sprouts From Frost

The winter months can be a real drag for Brussels sprouts. The cold and frosty weather can make them bitter, but with a little TLC, you can keep them from freezing and keep them tasting their best.

There are several things you can do to protect your Brussels sprouts from frost damage. The first is to plant them early in the season so they have plenty of time to grow before the cold sets in. If that doesn’t work for you, try planting them in a raised bed so they have some insulation from the ground.

If neither of those options works for you, there are still some things you can do to help protect your sprouts:

– Cover with mulch – This will help insulate them from the cold ground, keeping them warm and cozy until spring arrives!

– Wrap each plant with plastic wrap – This will trap heat around each plant, helping it retain more warmth than if it were left uncovered.

– Water well – This will help keep moisture levels higher around each plant so they don’t dry out as quickly when they are covered by snow or ice.

Caring For Brussels Sprouts During The Winter

During the winter, Brussels Sprouts plants should be protected from frost. A mulch of straw or leaves will help to keep the soil temperature at a more consistent level and protect against cold snaps in which temperatures drop below freezing.

Brussels sprout plants also need to stay moist during this time of year. This can be done by watering them regularly with a soaker hose so that water is absorbed deeply into the soil, or by watering more often with just enough to keep their leaves drier than the soil itself (so they don’t get wet and rot).

In addition, it’s important to protect your Brussels sprout plants from pests like cabbage worms—these pests are attracted to warm conditions and may eat your buds as soon as they grow large enough for consumption!

Other common problems include wilted leaves or buds that fail to produce at all despite being healthy looking at first glance; these symptoms may indicate disease problems such as root rot caused by too much water sitting around on top without being absorbed into plant roots properly over time due weather conditions making it hard for them live up those expectations.

What Temperatures Will Kill Brussels Sprouts?

The absolute lowest the temperature can get and still allow Brussels sprouts to survive is 10 degrees Fahrenheit.

If your winter temperatures fall below 20 degrees, you’ll need to protect your Brussels sprouts if you want to keep them alive.

Even at this low temperature, however, some damage may occur and it will be necessary for you to replant new sprouts once spring comes around again.

Can I overwinter Brussels Sprouts?

Yes, Brussels sprouts can be overwintered.

Brussels sprouts are hardy plants that can survive cold temperatures and even some frost. They can withstand temperatures as low as 0 degrees F.

However, if the temperature falls below 20 degrees F for an extended period of time (more than a week), your Brussels sprouts may die or become stunted.

If you live in an area with mild winters where the temperature only occasionally drops below 20 degrees F, you may be able to successfully overwinter your Brussels sprouts by protecting them from the elements and providing adequate water throughout the winter months.

If you’re planning on growing Brussels sprouts indoors throughout the winter months and cannot bring yourself to harvest them before their prime time (October through November), consider adding a greenhouse structure over the top of your raised beds so they don’t get damaged by any frost that might hit while they’re still growing under lights inside!


In summary, Brussels sprouts can survive freezing temperatures and will still be edible when they thaw out. This is great news for gardeners who want to get the most out of their harvest! To keep the alive, you’ll either need to protect them if they’re growing outdoors or bring them indoors.