Can Radishes Survive Frost?

Radishes are root vegetable that is popular for their spicy, peppery flavor. They can be eaten raw or cooked and have been used as a food source since ancient times. Radishes thrive in cooler climates and should be planted in spring after the last frost has passed. However, if your radish seeds did not germinate or they did not get enough sunlight during the growing season, you may be wondering if they can survive winter by overwintering in your garden.

Can Radishes Survive Frost?

Yes, they can. Radishes are a cool-season crop and will grow well in most climates.

Radishes can handle frost, but they don’t like it. If you live in an area where the temperature gets below 50 degrees Fahrenheit, you should consider protecting your radish crop from frost with frost cloths or blankets. You can also cover them with mulch if you don’t have any other options available to you.

How Tolerant Are Radishes To Cold Weather

Radishes are hardy plants and will tolerate cold weather. They can survive temperatures as low as -10 degrees Fahrenheit and even below that if you mulch them with straw or leaves.

Radishes can survive temperatures as low as -25 degrees Fahrenheit and even colder if they are covered with straw, leaves, hay, or other organic material.

If your radishes have been planted in the ground, you may consider mulching them to help retain heat around the roots during the winter months. If you don’t want to use an organic material like straw or hay then use plastic sheeting instead so that there is still some form of protection for your plants against frost damage

How To Protect Your Radishes From Frost

Covering radishes with a blanket or mulch is the easiest way to protect them from frost, but it can be a bit of a hassle to take off the cover every morning and put it back on every evening. If you’re up for that challenge, simply place an old sheet or blanket over your plants and then secure it with rocks or bricks. This will help keep the cold air out while still allowing moisture in so your radishes don’t dry out too much.

Another option would be to use straw or hay as an insulator instead of fabric – this method lets air flow through freely while still keeping most of the frost at bay! You could also just throw some soil overtop if that’s easier than finding some hay somewhere (most likely).

If none of these options seem appealing for whatever reason (perhaps because they’re not convenient enough), try using leaves as protection against frost instead! Leaves are made from mostly water which means they won’t trap heat as other materials do – but obviously don’t use live leaves because those might end up blocking sunlight too much for optimal growth conditions.

Caring For Radishes During The Winter

Radishes are a great choice for a garden. They grow quickly, and the leaves and roots are edible. However, they do require some extra care during the winter months. Here are some tips for keeping your radishes healthy and happy this winter:

Watering: Radishes need to be watered regularly during the growing season, but once they have been harvested, it’s important to let them dry out before watering again. The water that remains in the soil will cause fungal diseases like leaf spots and rust to develop on your plant.

If it’s not too cold outside (below 40 degrees Fahrenheit), you can use a bucket of water to give your plants an occasional drink instead of watering them directly with a hose or sprinkler system. This will also help prevent frost damage on the tops of their leaves!

Fertilizer: Feeding radishes will help them develop strong roots so they can withstand cold weather better than if they weren’t fed at all—but make sure that you feed them only when there is snow on the ground (or if there’s another reason why it wouldn’t freeze). If you feed them too early in the season and then there’s a hard freeze overnight, the fertilizer could burn the radishes.

What Temperatures Will Kill Radishes?

Radishes will not survive if they are exposed to temperatures below 32 degrees Fahrenheit. The length of time it takes for the radish’s body to freeze depends on how cold the air is.

For example, if your radishes are in an area where temperatures are around 32 degrees Fahrenheit, it may take about three hours for them to freeze solid. If you live in a colder climate and have planted your radishes in soil with a temperature below freezing (32 degrees), they can still survive as long as they aren’t exposed directly to this freezing air.

Can I Overwinter Radishes?

Yes, radishes can be overwintered. Radishes are cool-weather vegetables and will not grow in the heat of summer. Radishes will grow best in the spring and fall, but you can also plant them in late summer to get an early harvest.

Radishes do not need a lot of food to grow, so they are a great vegetable for beginning gardeners because they are easy to grow and don’t require much attention. You can even start your own radish seeds indoors with this simple trick!

If you want to keep planting radishes all year through, try overwintering them in a cold frame or hoop house (if you live where winters aren’t too harsh). The key is protecting them from freezing temperatures by covering them with blankets or straw when frost threatens.


If you’re looking to grow radishes in your garden over the winter, you can give them a try! They don’t need a lot of attention and will do just fine in most climates. Be sure that they have plenty of sunlight and water though, so they don’t wilt or get sick. Just be aware that there may be some frost damage even if you do everything right!