The Q&A Archives: Dividing Rhubarb

Question: Do you divide rhubarb plants in the fall? What can I do to make the stalks larger? When is the best time to harvest?

Answer: Rhubarb is usually divided in April, but you can dig and divide it in the fall, as well. Stalk size has as much to do with the variety you're growing as it does the age of the plant; older plants send up thicker stalks. Rhubarb plants are usually divided every 4-6 years.

The time of harvest is dependent upon the variety as well as on the location and temperature. With varieties that produce many seed stalks, harvesting should begin before the seeds start to turn color. You should remove the seed stalks when they first appear. Generally, harvesting begins in late May or early June, with an option of a second harvest made in late August.

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