How To Harvest Celery Root

You can harvest celery root in the fall once the root reaches about 3 to 4 inches across and the leaves start to yellow.
 
Harvesting celery root is one of those garden tasks that feels a little intimidating at first, but it’s actually pretty straightforward once you know what to look for.
 
If you’ve been asking yourself “how do I harvest celery root” or you’re just not sure when to dig it up, you’re in the right place.
 
Celery root, also called celeriac, is grown for its round, knobby bulb rather than its stalks, so the harvesting process is totally different from regular celery.
 
In this post, we’ll walk through exactly how to harvest celery root, when to harvest celery root, and how to store it so it stays fresh for months.
 
Let’s dig in.
 

How to Harvest Celery Root the Right Way

Learning how to harvest celery root correctly comes down to timing and technique, and both matter more than you’d think.
 
Here’s what you need to know before you head out to the garden.
 

1. Wait Until the Root Is Fully Mature

The number one rule when you harvest celery root is patience.
 
Celeriac takes a long time to mature, usually between 100 and 120 days from transplanting.
 
You’ll know celery root is ready to harvest when the bulb measures about 3 to 4 inches in diameter.
 
If you harvest celery root too early, the bulb will be small and the flavor won’t be fully developed.
 
So let those roots size up before you make a move.
 

2. Watch the Leaves for Signs

When you harvest celery root, the leaves give you a big hint about timing.
 
The outer leaves will begin to yellow and flop over as the plant redirects energy into the bulb.
 
That said, don’t wait until all the foliage dies back completely.
 
If you wait too long, the root can become woody or start to crack.
 
A little yellowing of the outer leaves paired with a nice, firm bulb is the sweet spot for how to harvest celery root.
 

3. Loosen the Soil Around the Root

Before you actually pull the celery root, grab a garden fork and gently loosen the soil a few inches away from the bulb.
 
This step keeps you from damaging the root when you harvest celery root.
 
Celeriac roots are shallow, so be careful not to stab straight down into the bulb.
 
Loosen the soil in a circle around the plant, then lift it gently.
 
If you’ve ever wondered how to harvest celery root without breaking it, this is the trick.
 

4. Cut the Leaves About an Inch Above the Crown

Once the root is out of the ground, use a sharp knife or pruners to trim the leaves about an inch above the top of the bulb.
 
This is an important step when you harvest celery root because leaving too much foliage attached causes the root to dry out faster.
 
Don’t cut it flush with the crown either, since that can open the bulb up to rot.
 
An inch of stem left on top is just right.
 

When to Harvest Celery Root for the Best Flavor

Timing is everything when you harvest celery root, so let’s talk about the ideal window.
 

1. Harvest in Late Fall

The best time to harvest celery root is in late fall, usually after a few light frosts have passed.
 
Cold weather actually sweetens the bulb, which is why many gardeners wait until October or November to harvest celery root.
 
A light frost won’t hurt the root, but a hard freeze will, so keep an eye on the forecast.
 

2. Harvest Before the Ground Freezes Solid

If you’re in a colder climate, you’ll want to harvest celery root before the soil turns rock hard.
 
Once the ground freezes deeply, digging becomes nearly impossible without damaging the bulb.
 
You can also mulch heavily over the row and harvest celery root well into early winter in milder zones.
 

3. Don’t Rush the Harvest

It can be tempting to harvest celery root early, especially if you’re excited about your first crop.
 
But those extra few weeks make a huge difference in size and flavor.
 
So hold off as long as the weather allows, and you’ll be rewarded with bigger, tastier bulbs.
 

How to Store Celery Root After Harvest

Once you harvest celery root, you’ll want to store it properly so it keeps for months.
 

1. Brush Off the Dirt, Don’t Wash It

After you harvest celery root, brush off excess soil instead of washing it.
 
Moisture encourages mold, so keep the bulbs dry until you’re ready to use them.
 

2. Keep Them in a Cool, Humid Spot

Store celery root in a cool, humid place, ideally between 32 and 40°F with high humidity.
 
A root cellar, garage, or the crisper drawer of your fridge all work well.
 
When you harvest celery root and store it correctly, it can last for several months.
 

3. Check for Soft Spots

Every couple of weeks, check the bulbs you harvest celery root from and remove any that feel soft or show signs of rot.
 
One bad bulb can spoil the whole batch, so stay on top of it.
 

So, How Do You Harvest Celery Root?

You harvest celery root in the fall once the bulb reaches 3 to 4 inches and the outer leaves start to yellow.
 
Loosen the soil, lift gently, trim the leaves, and store the bulbs somewhere cool and humid.
 
Now that you know how to harvest celery root, you can enjoy this underrated garden gem all winter long.
 
Happy harvesting.