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Lavender does get bigger every year, but only up to a point.
If you’ve been asking yourself “does lavender get bigger every year,” the short answer is yes, it does grow larger each season as it matures.
However, that growth isn’t infinite, and a lavender plant won’t keep expanding forever the way some trees or shrubs do.
Instead, it follows a predictable pattern where it gains size for several years, then eventually slows down and even starts to decline if you don’t care for it properly.
So while your lavender will get bigger every year during its early life, that growth curve eventually flattens out and even reverses.
In this post, we’ll explore why lavender gets bigger every year, how long that growth lasts, and what you can do to keep your plant healthy and full as it ages.
Let’s dig in.
Why Lavender Gets Bigger Every Year
Lavender gets bigger every year for a few key reasons, and understanding them helps you know what to expect from your plant.
1. It’s a Perennial That Builds Woody Growth
Lavender is a perennial subshrub, which means it lives for multiple years and develops a woody base over time.
Each growing season, that woody framework expands, adding new stems and branches that make the plant wider and taller.
This is the main reason lavender gets bigger every year during its first few seasons.
2. New Stems Multiply Each Season
Every spring, lavender pushes out fresh green stems from its base and from existing branches.
These new stems don’t replace the old ones, they add to them.
So year after year, the plant accumulates more stems, more foliage, and more flowering spikes.
That steady accumulation is exactly why lavender gets bigger every year.
3. The Root System Expands Underground
While you’re watching the top of your lavender grow, the roots are also spreading beneath the soil.
A larger root system supports more top growth, which fuels even more size the following year.
This underground expansion is another reason lavender gets bigger every year until it reaches maturity.
How Long Does Lavender Keep Getting Bigger?
Lavender doesn’t keep getting bigger every year forever.
1. Growth Peaks in the First Three to Five Years
Most lavender varieties grow fastest during their first three to five years.
During this window, lavender gets bigger every year in a noticeable way, often doubling in size from the previous season.
After that, the growth rate starts to slow down significantly.
2. Mature Plants Plateau
Once lavender reaches maturity, it stops getting bigger every year and instead holds its size.
A mature English lavender might settle at around two to three feet wide, while Spanish lavender can spread a bit wider.
At this stage, the plant focuses more on flowering than on expanding.
3. Without Pruning, It Can Decline
Here’s the catch: if you never prune your lavender, it won’t stay big and healthy.
Instead, the plant becomes leggy and woody, with dead growth in the center and sparse stems around the edges.
So even though lavender gets bigger every year early on, neglect can make it look smaller and weaker over time.
How to Keep Your Lavender Growing Bigger and Healthier
If you want lavender to get bigger every year the right way, a little maintenance goes a long way.
1. Prune After Flowering
Prune your lavender lightly right after it finishes blooming.
Cut back about a third of the green growth, but never cut into the old woody stems.
This keeps the plant compact and encourages fresh growth that helps lavender get bigger every year.
2. Give It Full Sun and Well-Drained Soil
Lavender thrives in full sun and sandy, well-drained soil.
Poor drainage is the number one killer of lavender, and soggy roots will stop it from getting bigger every year.
3. Avoid Overfeeding
Too much fertilizer makes lavender floppy and short-lived.
A light feeding in early spring is plenty, and rich soil can actually harm the plant more than help it.
4. Replace Very Old Plants
After eight to ten years, even well-cared-for lavender slows down.
At that point, taking cuttings or replacing the plant is the best way to keep your garden full of vigorous lavender that gets bigger every year.
So, Does Lavender Get Bigger Every Year?
Lavender does get bigger every year, at least during its first few growing seasons.
It builds woody growth, multiplies stems, and expands its roots, all of which make it larger each year until it matures.
After that, lavender stops getting bigger every year and holds its size, or declines without proper pruning and care.
So give your lavender sun, sharp drainage, and a good annual trim, and it’ll reward you with that full, fragrant growth you’re after.