When To Pick Lemongrass

When to pick lemongrass depends on a few simple signals, and getting the timing right means the difference between a fresh, aromatic harvest and tough, woody stalks that lack flavor.
 
The best time to pick lemongrass is when the stalks are about half an inch thick at the base, which usually happens 4 to 6 months after planting.
 
You’ll know when to pick lemongrass because the plant will look full, with tall, arching leaves that reach around 2 to 3 feet in height.
 
If you’ve been wondering when to pick lemongrass for the strongest citrusy taste, the key is to harvest before the plant puts too much energy into flowering.
 
In this post, we’ll cover everything you need to know about when to pick lemongrass, from visual cues to seasonal timing, plus tips for harvesting and storing so you get the most out of every stalk.
 
Let’s dig into the details and make sure you never miss that perfect harvest window.
 

When to Pick Lemongrass: The Key Signals to Watch For

The question of when to pick lemongrass really comes down to checking a few clear signs that your plant is ready.
 
While lemongrass is forgiving and can be harvested at many stages, the ideal moment gives you tender, flavorful stalks that are easy to work with in the kitchen.
 
Here are the main indicators that tell you when to pick lemongrass for peak quality.
 

1. Thickness at the Base Matters

When to pick lemongrass is often determined by the diameter of the stalk near the soil line.
 
You want to pick lemongrass stalks that are roughly the thickness of a pencil to your index finger, around 0.4 to 0.5 inches across.
 
If the base is too thin, the stalk will be fibrous and lacks the aromatic oils that make lemongrass so desirable.
 
If you wait too long and the stalk gets overly thick and woody, you’ll find it hard to chop and the flavor becomes more bitter.
 
Checking the base thickness is your first and most reliable clue for when to pick lemongrass.
 

2. Height and Leaf Development Tell the Story

Another way to know when to pick lemongrass is by observing the overall size of the clump.
 
Once your lemongrass reaches about 12 to 24 inches tall, the stalks have usually stored enough essential oils to be worth harvesting.
 
Look for leaves that are a vibrant green with a slight droop at the tips, as this indicates the plant is mature but not yet stressed.
 
If the leaves start to turn brown or yellow at the edges, that’s a sign you’ve passed the prime window for when to pick lemongrass, so don’t delay.
 
The more developed the canopy, the more energy the stalks have stored, making this a solid secondary indicator.
 

3. Time Since Planting Gives You a Timeline

If you started lemongrass from seed, you’ll generally be looking at when to pick lemongrass around 4 to 5 months after germination.
 
For lemongrass grown from transplants or divisions, the wait is shorter, often just 2 to 3 months after the new clump establishes itself.
 
Keep track of your planting date and mark a calendar reminder for when to pick lemongrass, as this prevents you from harvesting too early in the season.
 
However, don’t rely solely on the calendar, because weather, soil quality, and sunlight all affect growth rates.
 
Use the time since planting as a general guide within the broader process of checking stalk thickness and leaf health.
 

Seasonal Timing: The Best Time of Year to Pick Lemongrass

When to pick lemongrass also depends heavily on your local climate and the current season.
 
Lemongrass is a tropical grass, so it thrives in warm conditions and slows way down when temperatures cool.
 
Understanding seasonal timing ensures you harvest at the point of maximum flavor and vigor.
 

1. Harvest in Late Summer to Early Fall for Most Climates

For gardeners in temperate zones, the best time to pick lemongrass is typically from late summer through early fall, just before the first frost threat.
 
By this time, the plant has enjoyed months of warm sun and consistent moisture, resulting in plump, fragrant stalks.
 
Lemongrass will tolerate a light frost, but cold damage can ruin the texture and flavor, so plan to pick lemongrass before any hard freeze.
 
If you live in a region with a shorter warm season, you might start picking lemongrass as early as late summer, even if stalks are slightly thinner.
 
That’s because it’s better to pick lemongrass a bit early than to lose it all to an early cold snap.
 

2. In Tropical and Subtropical Areas, You Can Pick Lemongrass Year-Round

When to pick lemongrass in warmer zones like USDA 9 to 11 is a more flexible question, as the plant can grow all year long.
 
In these climates, you can pick lemongrass whenever stalks reach the proper thickness, even in the middle of winter.
 
Just avoid harvesting during prolonged wet spells, as excess moisture can make the stalks waterlogged and less aromatic.
 
And after a summer growth spurt, you’ll find that pick lemongrass yields are higher and the flavor is more intense than in cooler months.
 
So for southern gardeners, keep an eye on stalk size rather than the calendar to decide when to pick lemongrass.
 

3. Avoid Picking Right After Heavy Rain or During a Heat Wave

Timing your harvest down to the day is also important, and you should avoid picking lemongrass immediately after a downpour.
 
Right after heavy rain, the stalks are full of excess water that can dilute the essential oils, so the flavor will be weaker.
 
Wait two or three dry days after a storm, and the volatile compounds will concentrate back into the plant tissue.
 
Similarly, avoid picking lemongrass during extreme heat in the middle of the day, as the plant may be slightly wilted and stressed.
 
Early morning harvest is ideal for when to pick lemongrass because the stalks are fully hydrated from the night but have not been baking in the sun.
 

How to Pick Lemongrass Properly So It Keeps Growing

Once you’ve figured out when to pick lemongrass, you still need to use the right harvesting technique so the plant continues to produce.
 
Lemongrass is a perennial in warm climates, and cutting stalks correctly allows new growth to emerge from the same clump.
 
Here are the best practices to follow when you’re ready to harvest.
 

1. Twist and Pull, Don’t Cut at the Base

If you know when to pick lemongrass but pull the whole clump up by the roots, you’ll kill the plant and end your harvest.
 
Instead, grab the stalk near the soil line and give it a firm, twisting pull while holding the base of the clump with your other hand.
 
This method separates the outer stalk cleanly from the central growing point, allowing the remaining stalks to keep thriving.
 
As you pick lemongrass this way, you’ll notice that the oldest and thickest stalks come off easiest, while younger ones stay behind.
 
This selective harvest is perfect for continuous production throughout the season.
 

2. Cut at Soil Level for a Clean Release

If twisting doesn’t feel comfortable, you can use a sharp knife or pruning shears to cut the stalk at soil level.
 
Make sure your cutting tool is clean and sharp to avoid crushing the fibrous tissue, as crushing invites rot.
 
Cut at an angle just above the white base where the stalk emerges from the ground, and avoid damaging nearby young shoots.
 
After you pick lemongrass using this method, the stub will dry out and new leaves will sprout from the center of the clump.
 
This approach is especially helpful when you want to harvest many stalks at once for a big batch of tea or soup.
 

3. Leave at Least Half the Clump for Regrowth

A golden rule for when to pick lemongrass is to never strip more than 50 percent of the stalks at any single harvest.
 
The plant relies on its leaves and stalks for photosynthesis to fuel regrowth, so taking too much will stress it.
 
If you pick lemongrass too aggressively, the clump may become weak and take a long time to bounce back.
 
As a rule of thumb, choose the outermost stalks and leave the inner ones intact, as these are the youngest and most vigorous.
 
By following this approach, you can pick lemongrass every few weeks and enjoy a steady supply all season.
 

So, When to Pick Lemongrass? Your Simple Answer

When to pick lemongrass comes down to a combination of time, size, and season, but the clearest answer is when the stalks reach half an inch thick at the base.
 
That visual cue, paired with a plant height of 12 to 24 inches, tells you the lemongrass has matured enough to deliver that bright, citrusy punch.
 
In most regions, the recommendation is to pick lemongrass from late summer to early fall, while warmer climates allow for year-round harvesting.
 
Always remember to harvest selectively, taking outer stalks while leaving the core intact, so your plant keeps producing for months to come.
 
With this knowledge of when to pick lemongrass, you’ll consistently get tender, aromatic stalks perfect for curries, teas, and marinades.
 
So get out there, check those stems, and enjoy the fresh flavor of lemongrass picked at the perfect moment.