• 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

Ruta graveolens 'Jackman's Blue'

rue 'Jackman's Blue'

  • Other common names rue 'Jackman's Blue'

  • Family Rutaceae

  • Genus Ruta can be deciduous or evergreen shrubs or woody-based perennials with aromatic, pinnately lobed leaves and yellow flowers with 4 or 5 fringed petals in terminal clusters

  • Details 'Jackman's Blue' is a bushy evergreen shrub with aromatic, broad, blue-grey leaves pinnately divided into rounded segments, and cymes of 4-petalled yellow flowers 2cm across, in summer


  • Foliage Evergreen

  • Habit Bushy

  • Fragrance Foliage

  • Toxicity Skin contact may cause severe photodermatitis. Wear gloves and other protective equipment when handling

  • 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 East-facing or West-facing

  • Exposure Exposed


  • Loam


  • Sand


  • MoistureWell-drained

  • SoilLoam, Sand

  • pHAcid, Alkaline, Neutral


  • Ultimate height 0.5-1 metres

  • Ultimate spread 0.5-1 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Grow in moderately fertile, well-drained soil, in full sun or partial shade. Will thrive in a hot dry site

Propagation Propagate by semi-hardwood cuttings in autumn

Suggested planting locations and garden types Drought Resistant Flower borders and beds Wall-side Borders Cottage & Informal Garden Mediterranean Climate Plants City & Courtyard Gardens Coastal

How to care

Pruning Pruning group 10 in spring or after flowering

Pests Generally pest free

Diseases Generally disease free

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