• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases
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Asclepias syriaca

common silkweed

Last-listed in the RHS Plant Finder in 2017

  • Other common names common silkweed
    common milkweed

    silk grass
    silky swallow wort
    Virginian silk

    see more
  • Family Apocynaceae

  • Name Status RHS Accepted name

  • Plant range Eastern N America

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