Oak Summit Nursery
Garden Rhubarb (Rheum × hybridum)
Garden Rhubarb (Rheum × hybridum)
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Garden Rhubarb is a hardy perennial grown from seed, so plants can vary in stalk colour and growth. Mature plants form large leaves and broad clumps.
The edible stalks are used for pies, sauces, and other cooked dishes.
Cold Hardiness Zone: 3
Mature Size: 3 to 4 ft wide
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Growing details
- Seed-grown variation
- Seed-grown hybrid rhubarb does not reliably come true; established crowns can remain productive for years
- Growing site
- Full sun to light shade; fertile, organic soil; consistent moisture and good drainage; pH 5.0-6.8
- Disease context
- Leaf spots, crown rot and Botrytis may occur; drainage is important
- Edible stalks
- Edible stalks are tart
More about this plant
Garden rhubarb grown from seed can vary and does not reliably reproduce a named hybrid or cultivar. Species-level guidance recommends full sun to light shade, fertile soil with organic matter, consistent moisture and good drainage. Poor drainage raises crown-rot risk. The edible stalks are tart; the leaf blades are not presented as edible. Established crowns can remain productive for years.
Cold hardinessZone 3 · Canadian maps for this plant
Zone 3 and warmer
The map shows minimum winter hardiness. Soil, moisture and summer warmth also affect how a plant grows.
About these maps
Climate: Natural Resources Canada, 1991–2020. Provincial distribution: VASCAN via retained botanical research. Province outlines: Natural Earth, public domain.
Open Government Licence – Canada