How Long To Pressure Can Collard Greens

How long to pressure can collard greens depends on the method you use and the type of canner you have.
 
For a dial-gauge pressure canner, you’ll process pint jars for 70 minutes and quart jars for 90 minutes at 11 PSI.
 
For a weighted-gauge pressure canner, you’ll process pint jars for 70 minutes and quart jars for 90 minutes at 10 PSI.
 
These times are based on USDA guidelines for pressure canning collard greens safely at home.
 
If you’ve been wondering how long to pressure can collard greens so they stay safe and delicious, you’re in the right place.
 
In this post, we’ll cover exactly how long to pressure can collard greens, why pressure canning is the only safe method, and a few tips to get the best results.
 
Let’s get to it.
 

How Long to Pressure Can Collard Greens

When you pressure can collard greens, the processing time is non-negotiable.
 
Collard greens are a low-acid vegetable, which means they absolutely must be processed in a pressure canner to destroy harmful bacteria like Clostridium botulinum.
 
So how long to pressure can collard greens exactly?
 
Here’s the breakdown based on jar size and canner type.
 

1. Pint Jars: 70 Minutes

If you’re pressure canning collard greens in pint jars, you’ll process them for 70 minutes.
 
Pints are a great choice if you have a smaller household or you just want to open a jar at a time without leftovers.
 
Just remember the 70-minute clock starts only once your canner has reached the correct pressure.
 

2. Quart Jars: 90 Minutes

For quart jars, the time to pressure can collard greens goes up to 90 minutes.
 
Quarts hold more greens, so the heat needs longer to penetrate all the way to the center of the jar.
 
This extra 20 minutes is not optional, and skipping it can leave you with unsafe jars.
 

3. Dial-Gauge vs. Weighted-Gauge Pressure

The pressure you use depends on your canner type, not the time.
 
Dial-gauge canners need 11 PSI, while weighted-gauge canners need 10 PSI.
 
If you live at a higher altitude, you’ll need to adjust the pressure upward, but the processing time stays the same.
 
Always double-check your canner’s manual and your altitude before you start.
 

Why You Must Pressure Can Collard Greens

You can’t safely water bath can collard greens, and here’s why.
 

1. Collard Greens Are a Low-Acid Food

Low-acid vegetables like collard greens have a pH above 4.6, which is the perfect environment for botulism spores to survive.
 
Boiling water only reaches 212°F, and that’s not hot enough to kill those spores.
 
A pressure canner reaches 240°F or higher, which is what it takes to make collard greens safe.
 

2. Botulism Risk Is Real

Botulism is rare but serious, and improperly canned low-acid foods are one of the leading causes.
 
The spores thrive in the oxygen-free environment inside a sealed jar.
 
That’s exactly why knowing how long to pressure can collard greens matters so much.
 

3. Texture and Shelf Life Improve

Pressure canning collard greens also gives you a longer shelf life, often up to a year or more.
 
And the high heat breaks down the tough fibers, giving you tender greens straight from the jar.
 

Tips for Pressure Canning Collard Greens

Once you know how long to pressure can collard greens, a few extra tips will help you nail the process.
 

1. Use Fresh, Firm Greens

Start with fresh collard greens that are crisp, not wilted or yellowing.
 
Wash them thoroughly to remove grit and dirt, because no one wants sandy greens.
 

2. Blanch Before Packing

Blanching collard greens for about 3 minutes helps them hold their color, flavor, and texture.
 
After blanching, plunge them into ice water to stop the cooking, then drain well.
 

3. Pack Hot Jars Loosely

Pack the greens into hot jars and cover them with boiling water, leaving 1 inch of headspace.
 
Don’t pack them too tightly, since the greens need room for the heat to circulate.
 

4. Add Salt (Optional)

You can add ½ teaspoon of canning salt to pint jars or 1 teaspoon to quart jars for flavor.
 
Salt is optional, but it does help season the greens as they process.
 

5. Let Jars Cool and Check Seals

After processing, let the jars cool completely for 12 to 24 hours.
 
Then press the center of each lid, and if it doesn’t pop up, you’ve got a good seal.
 

So, How Long to Pressure Can Collard Greens?

How long to pressure can collard greens comes down to 70 minutes for pints and 90 minutes for quarts.
 
Those times apply whether you use a dial-gauge or weighted-gauge pressure canner, as long as you hit the right pressure.
 
Pressure canning collard greens is the only safe way to preserve them, so don’t cut corners on time or temperature.
 
Follow these steps, and you’ll have jars of tender, shelf-stable collard greens ready whenever you crave them.