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Harvesting your Rhubarb

Gardening Guide: Remarkable Rhubarb

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Harvesting your Rhubarb

By Norann Oleson

Gardener harvesting rhubarb

Gardener harvesting rhubarb

In general, you can start harvesting your rhubarb the second year after planting; that’s assuming you started with a division/crown/root. You’ll have to wait until the third year after planting for a full harvest. If you started your rhubarb from seed, you’ll have to wait three years for your first harvest; four years for your first full harvest.

The rule of thumb for harvesting from your rhubarb plants is to take no more than a third of the stalks from any one plant at one time. You want to leave plenty of leaves on the plant; they’re feeding the root system, which needs to stay healthy and strong to survive the winter and be ready to push out new buds in the spring.

The best time to harvest is in the spring, before hot weather sets in. You’ll need to check the specifics on the variety you’re growing, but in general, once the stalks are a foot or more long, they’re ready to harvest. Some varieties produce stalks upwards of 2 feet long, so it will depend on the cultivar you’re growing.

Some gardeners like to be very fastidious in their harvesting methods; we all have a good set of garden shears or a sharp garden knife, don’t we? But harvesting rhubarb is no time to be neat. In fact, harvesting your rhubarb by slicing or cutting could open the plant to disease. Don’t leave open cuts on your plant.

To harvest your rhubarb stalks, grab the stalk near the root, hold it firmly, and twist it off as close to the root as possible. Harvest only three or four stalks from a plant at a time.

Before you take your rhubarb into the kitchen, get out your garden shears or sharp garden knife and trim off the base of the stalk and the big leaf at the top. Remember: Rhubarb leaves are toxic to humans and animals. Their high level of oxalic acid can cause a wealth of health problems. You can, however, toss the leaves on your compost pile. The leaves are still full of other nutrients, and the oxalic acid isn’t an issue for the soil.

Harvest season for rhubarb tends to last until the end of June. Once you hit that point, you should allow your plants to keep all their leaves so they can help the plant build up its reserves for the next growing season.

Can you pick a few stalks after June? Sure; just don’t overdo it. And when your rhubarb plants send up seed stalks, cut them off right away. You don’t want your plants wasting energy they could otherwise use to strengthen the plant for the next spring.

Store freshly cut rhubarb in a crisper drawer in the fridge. Use refrigerated rhubarb within a week. We discuss longer-term storage in Storing and Preserving Your Rhubarb.

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garden shears, harvesting rhubarb, rhubarb

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TABLE OF CONTENTS

  • Curator’s Corner
  • Introduction
  • Growing Zones for Rhubarb
  • Types of Rhubarb
  • Growing Rhubarb from Seeds or Crowns/Splits/Sets/Divisions
  • Sun and Soil Requirements for Growing Rhubarb
  • Planting Rhubarb in the Ground or in Raised Beds
  • Growing Rhubarb in Containers
  • Watering, Weeding, and Fertilizing your Rhubarb Plants
  • Harvesting your Rhubarb
  • Storing and Preserving Your Rhubarb
  • Preparing Your Rhubarb for Winter
  • Dividing Rhubarb
  • Forcing Rhubarb
  • Dealing with Rhubarb Diseases
  • Dealing with Rhubarb Pests
  • Essential Tools and Equipment for Growing and Enjoying Rhubarb
  • Dividing Rhubarb: Splitting, Transplanting, and Methods for Moving
  • Plant Profiles

  • Canada Red Rhubarb
  • KangaRhu Rhubarb
  • Crimson Red Rhubarb
  • Sunrise Rhubarb
  • Riverside Giant Rhubarb
  • Victoria Rhubarb
  • Recipes

  • Rustic Rhubarb Salsa
  • Rhubarb Comfort Crumble
  • Rhubarb Tea
  • Rhubarb Sauce Your Way
  • Rhubarb Fool
  • Classic Rhubarb Pie
  • Additional Articles

  • Nutrition Facts about Rhubarb
  • Health Benefits and Home Remedies of Rhubarb
  • Resources about Rhubarb
  • Rhubarb Glossary
  • Related Articles

  • Why Rhubarb Leaves are Toxic and What to Do with Them

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