Alexander's rhubarb Rheum alexandrae

Alexander's rhubarb


R. alexandrae is a rhizomatous perennial with large, glossy, dark green leaves with heart-shaped bases and prominent veins. In early summer produces droopingsprays up to 60cm long of tiny, star-shaped, yellow-green flowers which are almost covered by hanging, creamy bracts 10cm or more long

Plant Info
Common Problems

About this plant

  • memoNames

    • Family


    • Synonyms

      Alexander's rhubarb

  • skullToxicity

    May cause severe discomfort if ingested. Wear gloves and wash hands after handling

  • infoCharacteristics

    • Foliage type


    • Height

      1-1.5 metres

    • Spread

      0.5-1 metres

    • Hardiness zones


  • sunLight

    Full Sun, Partial Shade

  • scissorsPruning

    Deadhead spent flower spikes

  • bambooSoil

    Loam, SoilClay

  • pinSuitable locations

    • Hardiness zone

      Flower borders and beds Architectural Cottage & Informal Garden

  • sproutPropogation

    • Propagate by division in early spring

  • insectPests

    Generally trouble-free but may suffer from blackfly (black aphids)

  • microbeDiseases

    Generally trouble-free