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You can propagate lavender in the fall, and it’s actually one of the best times of year to do it.
The cooler weather and softer sunlight give your cuttings a much better chance of rooting without drying out.
If you’ve ever wondered how to propagate lavender in the fall without losing half your cuttings to rot, you’re in the right place.
In this post, we’ll walk through exactly how to propagate lavender in the fall, step by step, so you can turn a few snips into a whole new batch of plants.
How to Propagate Lavender in the Fall
Learning how to propagate lavender in the fall comes down to three things: taking the right cuttings, using the right medium, and giving them the right conditions.
Get those three right, and lavender roots surprisingly well before winter sets in.
1. Take Cuttings From This Year’s Growth
The first step in how to propagate lavender in the fall is choosing the right stems.
Look for softwood or semi-hardwood cuttings from the current season’s growth.
These stems are usually green at the tip and firm but not woody at the base.
Avoid the old, woody stems near the bottom of the plant, because they root much more slowly or not at all.
Cut a 4 to 6 inch stem just below a leaf node using clean, sharp snips.
2. Strip the Lower Leaves
Once you have your cutting, remove the leaves from the bottom half of the stem.
You want a few inches of bare stem that will go into the soil.
Leaves left below the soil line tend to rot, and rot is the number one reason fall lavender cuttings fail.
Leave the top few leaf clusters intact so the cutting can still photosynthesize.
3. Dip the Ends in Rooting Hormone
Dipping the cut end in rooting hormone gives your lavender a real head start.
A powdered or gel rooting hormone works well, and you only need a small amount.
Simply dip the bottom inch of the stem, tap off the excess, and it’s ready to plant.
If you don’t have rooting hormone, cinnamon is a gentle natural alternative, though results are less reliable.
Best Conditions for Propagating Lavender in Fall
How to propagate lavender in the fall also depends a lot on the environment you create for those cuttings.
Here’s what lavender really needs to root well.
1. A Well-Draining Potting Mix
Lavender hates sitting in wet soil, so drainage is everything.
Mix equal parts potting soil, perlite, and coarse sand for a light, airy medium.
You can also root cuttings in plain perlite or a seed-starting mix with extra perlite added.
The goal is a mix that holds a little moisture but lets excess water drain away fast.
2. Bright, Indirect Light
Fall sunlight is gentler than summer sun, but young cuttings still burn easily.
Place your pots somewhere bright with indirect light, like a sunny windowsill or a shaded porch.
A few hours of soft morning sun is perfect.
If you’re rooting them indoors, a grow light on a low setting works great too.
3. Consistent Moisture Without Sogginess
Keep the soil lightly moist, never soaking wet.
A spray bottle is your best friend here, since it lets you mist the surface without drenching the roots.
You can also cover the pot with a clear plastic bag to create a mini greenhouse, but open it every couple of days for airflow.
Too much humidity trapped inside is a quick way to grow mold instead of roots.
4. Warm Soil Temperatures
Lavender roots best when the soil stays between 65 and 75°F.
If fall nights get chilly where you live, bring your cuttings indoors or place them on a heat mat.
Cold soil slows rooting to a crawl, and cuttings may rot before they ever root.
How Long Until Fall Lavender Cuttings Root?
When you propagate lavender in the fall, patience is part of the process.
Most cuttings take anywhere from three to six weeks to develop roots.
You’ll know they’ve rooted when you feel gentle resistance if you tug lightly on the stem.
New growth at the top is another good sign that roots have formed below.
Once roots are established, move each cutting into its own small pot with the same well-draining mix.
Keep them in a sheltered spot through winter, and plant them out in spring once the soil warms up.
Mistakes to Avoid When Propagating Lavender in Fall
Overwatering is the biggest mistake, so always err on the dry side.
Using thick, woody stems instead of soft new growth is another common slip.
Skipping rooting hormone isn’t fatal, but it does lower your success rate.
And finally, don’t leave cuttings in direct hot sun, even in fall, because they’ll wilt fast.
So, How to Propagate Lavender in the Fall?
You can propagate lavender in the fall by taking 4 to 6 inch cuttings from this year’s growth, stripping the lower leaves, dipping the ends in rooting hormone, and planting them in a well-draining mix.
Keep them warm, brightly lit, and lightly moist, and most cuttings will root within three to six weeks.
Learning how to propagate lavender in the fall is really about working with the season instead of against it.
Do that, and you’ll have healthy new lavender plants ready for your garden by spring.