• 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

Cytisus × kewensis 'Niki'

Kew broom 'Niki'

  • Other common names Kew broom 'Niki'

  • Family Fabaceae

  • Genus Cytisus can be deciduous or evergreen shrubs, ranging from prostrate to erect and almost tree-like, with small, simple or 3-parted leaves and pea-like flowers spring or summer

  • Details 'Niki' is a low, spreading shrub to 1.5m across with arching, green stems, small, softly hairy leaves and pea-like, light yellow flowers produced all along the branchesin late spring


  • Foliage Deciduous

  • Habit Mat forming

  • Toxicity All parts, especially the seeds, may cause mild stomach upset if ingested. Wear gloves and wash hands after 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

  • Aspect South-facing or West-facing

  • Exposure Exposed or Sheltered


  • Loam


  • Sand


  • MoistureWell-drained

  • SoilLoam, Sand

  • pHAcid, Alkaline, Neutral


  • Ultimate height 0.1-0.5 metres

  • Ultimate spread 1-1.5 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Grow in moderately fertile, well-drained soil in full sun. Will thrive in poor, acid soil and, although lime-tolerant, may become chlorotic on shallow chalk soils. Plant when small as it resents transplanting

Propagation Root semi-ripe cuttings in late summer or early autumn and hardwood cuttings in midwinter

Suggested planting locations and garden types Banks and Slopes Flower borders and beds Coastal Gravel Garden Rock Garden City & Courtyard Gardens Cottage & Informal Garden

How to care

Pruning Minimal pruning required but pruning group 1 or pruning group 3 if necessary. Do not cut into old wood

Pests Gall mites may be a problem

Diseases Generally trouble free

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