How To Care For Lilies In The Winter

Caring for lilies in the winter starts with understanding that the best way to care for lilies in the winter depends entirely on whether you’re dealing with potted lilies or lilies planted in the ground.
 
When you care for lilies in the winter, your main goal is protecting the bulbs from freezing, rot, and extreme temperature swings.
 
If you’ve been wondering how to care for lilies in the winter, the short answer is that most hardy lily varieties need a period of cold dormancy, but they also need protection from the worst of the frost.
 
In this post, we’ll walk you through the essential steps for winter lily care, covering everything from mulching and watering to digging up bulbs and storing them indoors.
 
Let’s dig in and make sure your lilies come back beautiful and healthy when spring arrives.
 

Why You Need To Care For Lilies In The Winter

The reason you need to care for lilies in the winter is that lily bulbs are living storage organs that can easily be damaged by freezing and thawing cycles.
 
When the ground freezes and thaws repeatedly, it can heave bulbs right out of the soil, exposing their roots to dry winter air.
 
So learning how to care for lilies in the winter is really about stabilizing the soil temperature around the bulbs and keeping moisture levels steady.
 

The Cold Dormancy Requirement

Most lilies actually require a period of cold dormancy to bloom well the following summer, which is why you can’t simply bring them inside and keep them warm.
 
If you care for lilies in the winter by leaving them outdoors, you’re giving them the chill hours they need to trigger spring growth.
 
But the key is to ensure the bulbs don’t get frozen solid for extended periods, as that can kill the embryonic flower buds inside.
 

Protecting Against Rot And Pests

Winter is also a time when lily bulbs can rot if the soil stays waterlogged, so part of winter lily care is making sure drainage is good before the cold hits.
 
When you care for lilies in the winter, you also need to think about pests like voles and mice that love to snack on dormant bulbs underground.
 

How To Care For Lilies In The Winter In The Ground

If your lilies are planted in garden beds, the best way to care for lilies in the winter is to leave them in place and add a thick layer of mulch.
 
This method works well for hardy varieties like Asiatic lilies and Oriental lilies that are suited to your growing zone.
 

1. Cut Back The Foliage After It Dies

After the first hard frost, the lily stems and leaves will turn brown and die back naturally.
 
Let them stand for a week or two so the foliage can send energy back down to the bulbs.
 
Then cut the stalks down to about 2 to 3 inches above the soil line, and dispose of any diseased plant material.
 
This is a simple step in how to care for lilies in the winter because it removes hiding spots for overwintering pests.
 

2. Apply A Thick Mulch Layer

Once the ground is cold but not yet frozen solid, spread 4 to 6 inches of mulch over the planting area.
 
Use straw, shredded leaves, bark chips, or pine needles as your mulch material.
 
This mulch acts like a blanket, keeping soil temperatures more constant and preventing freeze-thaw heaving.
 
When you care for lilies in the winter with mulch, you also trap soil moisture so the bulbs don’t dry out completely.
 

3. Avoid Watering During Deep Freeze

If your area experiences a winter drought, a light watering before the ground freezes is helpful, but you should never water when the soil is frozen solid.
 
Overwatering during winter is one of the biggest mistakes people make when they care for lilies in the winter.
 
Your goal is moist but not soggy soil, because standing water around lily bulbs leads to fungal rot.
 

How To Care For Lilies In The Winter In Containers

Caring for lilies in the winter changes quite a bit when your lilies are growing in pots, because container roots are far more exposed to cold than in-ground roots.
 
Potted lilies can freeze solid much faster, so you need extra protection to care for lilies in the winter successfully.
 

1. Move Pots To An Unheated Garage Or Shed

A great way to care for lilies in the winter is to move your containers into an unheated garage, basement, or shed where temperatures stay just above freezing.
 
This sheltered spot prevents the worst of the temperature swings while still giving the bulbs their needed cold dormancy.
 
If you don’t have that option, you can also sink the pots into a garden bed and cover them with mulch.
 

2. Insulate The Pots Themselves

Wrap your containers in burlap, bubble wrap, or an old blanket to add an extra layer of insulation around the root zone.
 
Another trick to care for lilies in the winter in pots is to place the pots against the house foundation, which radiates a little warmth.
 
And remember to group pots together close to each other so they share heat and shield each other from wind.
 

3. Water Sparingly Throughout Winter

Even in dormancy, lily bulbs in containers need occasional moisture so their roots don’t completely desiccate.
 
Check the pots once a month and water lightly if the soil feels bone dry, but only on days when the temperature is above freezing.
 
When you care for lilies in the winter in containers, err on the side of too dry rather than too wet.
 

Alternative Method: Digging And Storing Bulbs Indoors

If you live in a region with very harsh winters, you might choose to care for lilies in the winter by digging up the bulbs and storing them indoors.
 
This method gives you complete control over the bulbs’ environment and is especially useful for tender lily species.
 

1. Lift The Bulbs After The First Frost

After the foliage has died back, carefully dig up the bulbs with a garden fork, being cautious not to cut or bruise them.
 
Shake off the excess soil and let the bulbs dry for a few days in a cool, airy place.
 
Then trim off any remaining roots and old stems.
 
This is a labor-intensive way to care for lilies in the winter, but it ensures the bulbs stay safe.
 

2. Store In Peat Moss Or Sawdust

Place the dry bulbs in a cardboard box or paper bag filled with slightly moist peat moss, sawdust, or vermiculite.
 
Make sure the bulbs aren’t touching each other to allow good air circulation.
 
Store the box in a cool, dark place with temperatures between 35°F and 45°F (2°C to 7°C).
 
Check them every few weeks and remove any bulbs that show signs of mold or shriveling.
 

3. Replant In Early Spring

When you care for lilies in the winter by storing them, you’ll need to replant them outdoors in early spring once the soil is workable.
 
Plant them at the same depth they were originally, and water them in well to settle the soil around the roots.
 
Pro tip: Label each variety before storing so you don’t mix them up when spring planting comes around.
 

So, How Do You Care For Lilies In The Winter?

You care for lilies in the winter by protecting their bulbs from freezing, rot, and pests while still allowing them to experience a proper cold dormancy.
 
For in-ground lilies, that means cutting back dead foliage, adding a thick mulch layer, and avoiding overwatering.
 
For potted lilies, it means moving them to a sheltered spot, insulating the containers, and watering very sparingly.
 
And for extreme climates, it means digging up bulbs and storing them in peat moss at a cool temperature.
 
Whichever method you choose to care for lilies in the winter, your reward will be healthy, vigorous plants that burst into glorious bloom come summer.
 
So don’t skip winter lily care, because a little effort now makes a huge difference in next year’s floral display.
 
Now you have the complete answer on how to care for lilies in the winter, so get out there and give your bulbs the cozy protection they deserve.