• 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

Myosotis scorpioides

water forget-me-not

  • Other common names water forget-me-not

    marsh forget-me-not
    mouse-ear scorpion grass
    snake grass

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  • Synonyms Myosotis palustris

  • Family Boraginaceae

  • Genus Myosotis can be annuals, biennials or perennials, with simple leaves and clusters of small, salver-shaped blue, yellow or white flowers, with yellow or white eyes, in spring or early summer

  • Details M. scorpioides is a erect rhizomatous perennial to 30cm, with oblong leaves and bright blue, white or yellow-eyed flowers 8mm across, in cymes in early summer

  • Plant range Temp. N. Hemisphere


  • Foliage Semi-evergreen

  • Habit Clump-forming

  • Hardiness

    Hardiness ratings

    All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

    • H1a - Under glass all year (>15C)
    • H1b - Can be grown outside in the summer (10 - 15)
    • H1c - Can be grown outside in the summer (5 - 10)
    • H2 - Tolerant of low temperatures, but not surviving being frozen (1 to 5)
    • H3 - Hardy in coastal and relatively mild parts of the UK (-5 to 1)
    • H4 - Hardy through most of the UK (-10 to -5)
    • H5 - Hardy in most places throughout the UK even in severe winters (-15 to -10)
    • H6 - Hardy in all of UK and northern Europe (-20 to -15)
    • H7 - Hardy in the severest European continental climates (< -20)




  • Full Sun

  • Partial Shade

  • Aspect South-facing or West-facing or East-facing

  • Exposure Sheltered or Exposed


  • Chalk


  • Chalk


  • Chalk


  • MoisturePoorly-drained

  • SoilSand, Clay, Loam

  • pHAcid, Neutral, Alkaline


  • Ultimate height 0.1-0.5 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Grow in wet soil at pool margins, in water no deeper than 10cm, in full sun or partial shade

Propagation Propagate by seed sown in-situ, or by division in spring

Suggested planting locations and garden types Low Maintenance City & Courtyard Gardens Wildflower meadow

How to care

Pruning Cut back after flowering

Pests Generally pest free

Diseases Plants are susceptible to powdery mildews and a downy mildew

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