Overwintering caladiums is the best way to keep your favorite varieties year after year! Saving caladium bulbs over winter can sometimes be a bit of a challenge, but it’s not terribly difficult. Don’t worry, I’ll show you exactly what to do in this post!
Even if you live in a cold climate like I do here in MN, it’s not hard to keep caladiums through the winter, and plant them again each spring.
That’s a good thing, because I am a sucker for their gorgeous foliage. Every year I seem to end up buying at least one, because they’re so beautiful and unique.
But it’s expensive to buy them new every year. So I like to dig them up, and store my caladiums through the winter. That way I can save myself a little cash in the spring.
Here’s what you’ll find in this detailed guide for overwintering caladiums…
Are Caladiums Perennials Or Annuals?
It’s common to find caladium plants for sale in the annuals section of garden centers in the spring. But they’re actually tender perennials that can survive for many years with the proper care.
They can be left in the ground if you live in a warm climate (zone 9 or higher). But for most of us, they won’t survive the winter if left outside. So they must be brought indoors in the fall.
3 Methods Of Overwintering Caladiums
There are three ways to overwinter caladiums, and these methods will work for all varieties. The method you choose will depend on where you live, and where you planted them.
- Leaving the bulbs in the garden over winter (if you live in a warm enough climate)
- Storing them in pots over winter
- Digging up and storing the tubers for winter
How To Overwinter Caladium Bulbs
In this section, I will describe each of the three methods for overwintering caladium tubers in detail. The method you choose will depend on the climate you live in, and whether you have them in pots or in the garden.
Overwintering Caladium Bulbs In The Ground
If you’re lucky enough to live in a warm enough climate, you can just leave your caladiums right in the ground all winter.
They will eventually go dormant, and all the foliage will die back. But, once the soil warms in the spring, they’ll grow back better than ever.
If you plan to leave them in the ground, then be sure they’re in a protected spot where they won’t get too much water. If kept too wet, caladium tubers left in the ground over winter could end up rotting.
Overwintering Caladiums In Pots
If your caladiums are in containers, then you can just overwinter them right in their pots. You can extend their growing season by several week if you bring the pots indoors before the temperature outside gets below 60F.
Otherwise, as it gets cooler in the fall, the plant will naturally start to go dormant, and the leaves will begin to die back.
Caladiums are not cold hardy at at all, so be sure to bring the pot indoors before it drops below 40F, or the bulb may not survive.
Once the plant has gone dormant, cut off all of the leaves, and store the pot in a dry location where the temperature stays around 60F. Allow the soil to dry out, and don’t water it all winter.
How To Store Caladium Bulbs For The Winter
The most common method of overwintering caladiums is digging the tubers out of the ground, and storing them for winter. Here are tips for lifting them, and instructions for how to store the bulbs for winter…
- When to dig up caladiums – Since they will not tolerate frost, you should dig them up before it gets too cold outside. The foliage will naturally start to die back once the temperature gets below 60 degrees F. But it may not die completely before they need to be lifted.
- Tips for digging up caladium tubers – Use a garden fork or spade shovel to gently lift the tubers out of the ground. Be sure to start digging far enough away from the plant so that you don’t accidentally cut or damage the bulbs. You can gently shake or brush the access dirt from the bulbs, but don’t wash it off.
- Preparing caladiums for winter storage – Once the tubers have been lifted from the garden, allow them to cure (dry out) for a week or so before storing them. After the bulbs have dried, the leaves will usually start to drop, or easily pull away from the tuber. Remove all of the leaves before storing them for winter.
- Storing the bulbs for winter – I like to pack my bulbs into a cardboard box filled with either dry peat moss or coco coir. But you could mix in some perlite if you have that on hand, or use another type of medium like sawdust, newspaper or pet bedding. Just be sure your packing material is totally dry. Pack the bulbs loosely and so that they aren’t touching each other. Place the box on a shelf in the basement or other dark location where they will stay dry and the temperature is around 60F.
Caladium Care Over Winter
You don’t have to do anything special for dormant caladiums in winter. Whether left in the ground, in pots, or in storage, the most important thing is to be sure they aren’t getting too much water during dormancy.
If they get too much moisture during the winter, they will rot. It’s also a good idea to check on them a few time through the winter to make sure they aren’t molding or drying out too much.
If you find any that have mold growing on them, throw them out immediately so the mold doesn’t spread to the other bulbs.
FAQs About Overwintering Caladiums
Below you’ll find the answers to some of the most common questions I get about how to overwinter caladiums.
If you can’t find an answer to your question in this section, or anywhere else in this post, then please leave a comment below and I’ll be happy to answer it.
Can caladiums grow indoors?
Technically yes, but it is pretty difficult. Caladiums naturally requires a dormant period during the winter months, so it’s best to allow them to rest.
You could certainly try keeping them indoors through the summer, and then allow it to go dormant during the winter.
Can you leave caladiums in pots over winter?
Yes! See the full instructions above under the section titled “Overwintering Caladiums In Pots” for detailed instructions.
Can you leave caladium bulbs in the ground over winter?
You can leave caladiums in the ground over winter if you live somewhere warm. They are hardy in USDA growing zones 9 and above.
Do caladiums come back every year?
Yes. With the proper winter care, caladiums will grow back year after year.
How long can you store caladium bulbs?
In the right conditions, caladium tubers can be stored for several months. Don’t try to keep them dormant for too long, I recommend planting them every spring.
But if for some reason you are unable to plant them right away in the spring, keeping them in storage for a few extra weeks should be fine. Just check on them periodically to be sure the bulbs aren’t too dried out.
Where To Buy Caladiums
If you’re wondering where to buy caladium plants or bulbs, you can usually find both for sale at you local garden center in the spring.
Plants growing in pots will probably be in the annuals or outdoor tropical plants section, or mixed in with the shade plants.
Most of the time, you can find dormant caladium tubers for sale with the other tropical summer bulbs. Of course, you can always buy them online year round too.
Now that you know how to save caladiums over winter, you can keep your favorite varieties year after year. Plus, once you get the hang of overwintering caladiums, you won’t have to feel guilty buying new plants every year.
More Posts About Overwintering Plants
- How To Store Bulbs For The Winter
- How To Store Dahlia Tubers For Winter
- How To Overwinter Tuberous Begonias
- How To Bring A Plant Out Of Dormancy
Share your tips for overwintering caladiums in the comments section below.