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You should prune lavender in the first year, and it’s one of the best things you can do for the plant.
Pruning lavender in the first year sets the foundation for a bushier, healthier, and longer-lived plant.
Many gardeners worry that cutting back young lavender might harm it, but when done right, first-year pruning is a critical step.
In this post, we’ll dive into the why, the how, and the when of pruning lavender in the first year.
Let’s get those shears ready and talk lavender.
Why Prune Lavender In The First Year Is So Important
Pruning lavender in the first year is important because it encourages the plant to grow dense and sturdy from the very start.
Without that early trim, lavender tends to become leggy, with woody, bare stems at the base and sparse growth at the top.
First-year pruning trains the plant to send out multiple new shoots from the base, creating a full, rounded shape.
This early shaping also promotes better airflow through the center, which reduces the risk of fungal diseases like root rot.
So if you’re asking whether you should prune lavender in the first year, the answer is a confident yes.
1. It Builds a Strong Framework
When you prune lavender in the first year, you’re essentially building the plant’s skeleton for years to come.
This early cut forces the plant to put energy into lower buds rather than just shooting upward.
That means more branches, more flowers later, and a plant that won’t flop open in the middle.
A strong framework is exactly what makes mature lavender look like those perfect, billowy mounds you see in photos.
2. It Prevents Woody, Bare Stems
Lavender is notorious for not regrowing from old, woody wood once it’s established.
Pruning lavender in the first year keeps that wood from forming too early and too high up the stem.
If you skip this step, you’ll likely end up with a plant that has a big, bare, woody base and green only at the tips.
First-year pruning forces growth low down, so the plant stays green and productive from the bottom up.
3. It Boosts Flower Production
You might think cutting off potential flowers is counterproductive, but the opposite is true.
Pruning lavender in the first year actually leads to more blooms in the second season.
This is because the plant responds to pruning by creating more branching points, and each branch can bear a flower spike.
So by sacrificing a few early flowers, you’re setting up a much bigger show later on.
When To Prune Lavender In The First Year
Timing is everything when you prune lavender in the first year.
The general rule is to prune twice during the first growing season, once in spring and again in late summer.
1. First Prune: After the First Flush of Growth
In spring, once new growth appears and reaches about 4 to 6 inches tall, it’s time for the first trim.
This is usually around late spring, depending on your climate and when you planted.
Take your shears and cut back about one-third of the top growth, making sure to leave some green leaves on every stem.
Never cut into the brown, woody base of the plant, as that wood may not regrow.
2. Second Prune: After the First Bloom
The second time you prune lavender in the first year is right after the first wave of flowers fades.
This usually happens in mid to late summer.
Cut the spent flower stems back to just above the new growth that’s emerging from the base.
This not only tidies the plant but also encourages a second, smaller flush of blooms.
3. Avoid Pruning Too Late in Fall
You should prune lavender in the first year, but you need to stop pruning by early autumn.
Late pruning encourages soft, new growth that won’t have time to harden off before frost.
That tender growth is easily damaged by cold weather and can kill the whole plant.
So always finish your last prune at least 6 to 8 weeks before the first expected frost.
How To Prune Lavender In The First Year Correctly
Knowing that you should prune lavender in the first year is one thing, but doing it right is another.
1. Use Clean, Sharp Shears
Always start with clean, sharp bypass shears to make a smooth cut.
Dull blades can crush the stems, making them vulnerable to disease.
Clean blades also prevent spreading any fungal spores from other plants.
2. Cut to a Pair of Leaves
When you prune lavender in the first year, always cut back to just above a pair of green leaves.
This ensures new growth emerges from that point, keeping the plant bushy.
Avoid leaving long, bare stubs, which will wither and look ugly.
3. Shape It Like a Molehill
Aim for a rounded, dome-like shape when you prune lavender in the first year.
The base of the plant should be slightly wider than the top so rain and sun reach all parts.
This molehill shape also prevents the center from becoming woody and splitting open.
4. Don’t Be Too Timid
Many people are scared to prune lavender in the first year hard enough.
But remember, a good rule of thumb is to remove about a third to half of the plant’s height.
As long as you leave some green growth on every stem, the plant will bounce back stronger.
Common Mistakes When You Prune Lavender In The First Year
Even well-meaning gardeners make mistakes when they prune lavender in the first year.
1. Cutting Too Deep into Old Wood
This is the most common and damaging mistake.
Lavender does not regenerate from old, brown wood at the base.
So when you prune lavender in the first year, never cut into that woody zone.
Only cut into the green, soft growth above it.
2. Pruning in the Middle of Winter
Pruning lavender in the first year during winter is a sure way to lose the plant.
Winter pruning leaves open wounds that freeze, and it removes protective growth.
Always wait until spring to do your major pruning.
3. Forgetting to Water After Pruning
After you prune lavender in the first year, give it a good drink.
This helps the plant recover from the shock of being cut back.
But don’t overwater, as lavender hates soggy roots.
Just a deep watering right after the prune is perfect.
So, Should You Prune Lavender In The First Year?
Yes, you should prune lavender in the first year, as it’s essential for a healthy, long-lived plant.
Pruning lavender in the first year encourages dense growth, prevents woody stems, and boosts future blooms.
Just remember to prune in spring and late summer, using clean shears, and never cut into old wood.
Avoid late fall pruning and keep the plant hydrated after each cut.
If you follow these simple steps, your lavender will reward you with years of fragrant, beautiful growth.
So grab those shears and give your lavender the first-year prune it deserves.
Your future self, and your garden, will thank you.