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To overwinter lavender indoors, you’ll need to bring potted plants inside before the first frost and give them a cool, bright, and dry environment to rest in until spring.
Lavender is a Mediterranean plant that hates soggy roots and warm, stuffy air, so overwintering lavender indoors is all about mimicking that dry, sunny hillside it loves.
If you’ve been wondering how to overwinter lavender indoors without killing it, the good news is that it’s totally doable with the right setup.
In this post, we’ll walk through how to overwinter lavender indoors step by step, from choosing the right spot to watering sparingly and pruning at the right time.
Let’s get your lavender through winter safely.
How to Overwinter Lavender Indoors Successfully
Overwintering lavender indoors works best when you copy the plant’s natural winter conditions: cool temperatures, bright light, and very little water.
Here’s how to get each of those right.
1. Start With a Potted Lavender, Not a Garden One
If you want to overwinter lavender indoors, the plant needs to be in a pot.
Digging up an established garden lavender and shoving it into a container rarely ends well because the root system gets badly damaged in the process.
The easiest approach is to grow lavender in containers from the start, or buy a potted lavender in late summer specifically for overwintering indoors.
English lavenders like ‘Hidcote’ and ‘Munstead’ are the hardiest and handle indoor winters best.
2. Bring It Inside Before the First Frost
Timing matters when you overwinter lavender indoors.
Move your potted lavender inside before the first hard frost hits, usually when nighttime temperatures start dipping toward 40°F.
Don’t wait until the plant has already been zapped by freezing temps, because cold damage plus the shock of moving indoors can finish it off.
A good trick is to bring it in gradually over a week, moving it to a sheltered spot first, then inside, so the transition isn’t a total shock.
3. Pick a Cool, Bright Spot
The biggest mistake people make when they overwinter lavender indoors is putting it in a warm living room.
Lavender doesn’t want to keep growing all winter; it wants to rest.
A cool room between 40–50°F is ideal, like a bright garage, a sunroom, or an unheated bedroom.
It also needs as much direct sunlight as you can give it, so a south-facing window is your best bet.
If natural light is weak, a grow light works great for overwintering lavender indoors.
4. Water Sparingly
When you overwinter lavender indoors, underwatering is far safer than overwatering.
Lavender is drought-tolerant and its roots rot fast in damp, cold soil.
Let the soil dry out almost completely between waterings, and then water lightly.
In a cool room, that might mean watering only every two to three weeks.
If your indoor spot is warmer, check the soil more often, but always err on the dry side.
5. Skip the Fertilizer and Go Easy on Pruning
Don’t fertilize lavender while you’re overwintering it indoors, because feeding encourages soft new growth that winter light can’t support.
Pruning is fine but keep it light.
Trim off dead or leggy stems, but save any hard pruning for spring after the danger of frost has passed.
Cutting too aggressively before winter leaves the plant exposed and stressed.
Common Problems When You Overwinter Lavender Indoors
Even with good care, a few issues pop up when you overwinter lavender indoors.
Knowing them ahead of time helps you fix them fast.
1. Root Rot From Overwatering
Yellowing, drooping leaves and a mushy base usually mean root rot.
This is the number one killer when people overwinter lavender indoors.
Stop watering immediately, let the soil dry, and repot into fresh, gritty, well-draining mix if the damage looks bad.
2. Leggy, Pale Growth
Stretched, pale stems mean your lavender isn’t getting enough light.
Move it closer to a sunny window or set up a grow light for 10–12 hours a day.
3. Spider Mites and Fungus Gnats
Warm, dry indoor air invites spider mites, while constantly damp soil breeds fungus gnats.
Wipe leaves down occasionally, keep good airflow around the plant, and avoid soggy soil.
4. Sudden Leaf Drop After Moving Indoors
A bit of leaf drop right after you bring lavender inside is normal adjustment stress.
Give it time, keep conditions steady, and it usually bounces back.
When to Move Lavender Back Outside
Once the last frost has passed and nighttime temps stay above 50°F, it’s time to move your lavender back out.
Harden it off gradually over a week or so, setting it outside for a few hours a day and slowly increasing the time.
This helps the plant adjust to full sun and wind without scorching.
So, How Do You Overwinter Lavender Indoors?
To overwinter lavender indoors, keep it cool, bright, and dry, and resist the urge to baby it with water and warmth.
Overwintering lavender indoors really comes down to three things: a potted plant, a cool sunny spot, and a light watering hand.
Do that, and your lavender will come through winter healthy and ready to bloom again in summer.
With these tips, you now know exactly how to overwinter lavender indoors, so your plant survives the cold months and thrives when spring returns.