Freezing Rhubarb

Freezing rhubarb will allow you to enjoy rhubarb crisps all year around. How to freeze rhubarb both dry pack or with a syrup.

Rhubarb is high in fiber and high in vitamin C. Harvest time for rhubarb is spring to early summer. When you harvest, simply pull the stalk from the plant with a twist. Cut off the leaves and base of the stalk. The leaves are not edible. In fact, they are poisonous, so don’t eat them.

Rhubarb plants come in several varieties. Colors range from light green to pink. My rhubarb plant is green. (Sigh.) I’ve heard the pink varieties are supposed to be sweeter. I know they are much prettier.

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Freezing Rhubarb

Freezer bags are a very easy way to pack foods for the freezer. However, they are meant for only one use. (Do you wash your freezer bags? I do sometimes.) Freezer boxes can be used over and over again.

Ziploc bags filled with sliced green rhubarb.

What you choose to pack in is personal choice. I used quart-size freezer bags in 4-cup quantities.

Washing a pile of large green rhubarb stalks in the sink.
Choose firm, tender, stalks. Wash, trim and cut into 1-2 inch lengths.
Peeling stringy pieces off of a stalk of green rhubarb.
Some rhubarb will have stringy fibers running through them. Well, actually, I think they all do, but some are more stringy than others.
Removing slices of green rhubarb from the stringy or tough part of the stalk.
These can be pulled off when you slice. Some of my rhubarb from this batch had been left far too long and were pretty stringy. You can see as I sliced them, they actually divided into little sections, leaving the stringy part to be discarded.

Blanching Rhubarb for Freezing

Blanching is optional. Personally, I have not blanched before freezing rhubarb. However it is supposed to help retain both color and flavor. Simmer rhubarb in boiling water for 1 minute and cool promptly in cold water.

How to Freeze Rhubarb Using the Dry Pack Method

Wash and pack either raw or blanched rhubarb tightly into containers. Remove as much air as possible. Label, seal, and freeze.

I don’t think that it gets any easier than that.

Freezing Rhubarb Using Sugar Pack Method

Measure out how much rhubarb you have after slicing. Mix in 1 cup sugar for each 4 cups rhubarb. Let sit until sugar is dissolved. I saw this in my old/outdated Ball Blue Book. I had not seen this recommended before, so of course, I had to try it out. I did not think the rhubarb would be juicy enough to dissolve the sugar. But it did. It was probably only 5 minutes or so.

Coating green rhubarb pieces with sugar in a bowl.

It seemed like a LOT of sugar. I guess I’ll know if I like this when I open the package later.

Juicy green rhubarb pieces coated with dissolved sugar in a bowl.

Pack into your preferred container. Remove as much air as possible. Seal and Freeze.

How to Freeze Rhubarb Using the Syrup Pack Method

Pack either raw or preheated rhubarb tightly into containers, and then cover with cool syrup.

To make syrup, simply combine water with sugar and heat until dissolved. Let this cool before pouring over your rhubarb. It can be warm, just not hot to where it will react with the plastic.

  • Light – 2 cups sugar to 1 quart water
  • Medium – 3 cups sugar to 1 quart water

Use only enough to just cover rhubarb. Not very much is needed. Remove as much air as possible. Label, seal, and freeze.

Closing the top of a freezer bag packed with pieces of green rhubarb.

Recipe Card

Freezing Rhubarb

Freezing rhubarb will allow you to enjoy rhubarb crisps all year around. How to freeze rhubarb both dry pack or with a syrup!
Print Recipe
Washing big stalks of green rhubarb under running water in the sink.


  • Freezer Bags or containers
  • Sharp Knife 


  • Rhubarb
  • Sugar optional


  • Wash, trim, and cut firm, tender stalks into 1-2” pieces, blanching if desired.
  • If desired, mix 1 cup sugar for each 4 cups rhubarb and let dissolve.
  • Place in freezer bags/containers.
  • Remove air, seal, and label.
  • Freeze.


You can also pack rhubarb using syrup:
  • Light Syrup: 2 cups sugar to 1 quart water
  • Medium Syrup: 3 cups sugar to 1 quart water
Use only enough cool syrup to just cover rhubarb.
Last Updated: 6/3/2021

Freezing Rhubarb Tips & FAQs

Tip for Freezing Rhubarb

Here is a freezing tip: If you want smaller amounts, for instance 1 cup per package. Use sandwich baggies for each 1 cup. Then place those sandwich bags in gallon size freezer bags. The sandwich bags are cheaper, but stored in the freezer bag, you still get the protection of the thicker bag.

I plan on doing some dry pack rhubarb in 1 cup sizes to have on hand for yogurt smoothies.

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Freezing Rhubarb

Page last updated: 6/3/2021

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