• 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

Lathyrus odoratus 'Brook Hall'

sweet pea 'Brook Hall'

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
sweet pea 'Brook Hall'

© RHS

  • Other common names sweet pea 'Brook Hall'

  • Family Papilionaceae

  • Genus Lathyrus can be annuals or herbaceous or evergreen perennials, mostly climbing, with pinnate leaves ending in a tendril, and showy pea-like flowers, fragrant in some species

  • Details 'Brook Hall' is a vigorous sweet pea to 2m. The white flowers, carried on long stems are 5cm across, with reflexed, wavy standards and spreading, wavy wings

Characteristics

  • Foliage Deciduous

  • Habit Climbing

  • Toxicity Seeds may cause mild stomach upset if eaten

  • 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)

    H3

Colour

Sunlight

  • Full Sun

  • Partial Shade

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

  • Exposure Sheltered or Exposed

Soil

  • Loam

    Loam

  • Sand

    Sand

  • Clay

    Clay

  • MoistureWell-drained

  • SoilLoam, Sand, Clay

  • pHAcid, Neutral, Alkaline

Size

  • Ultimate height 1.5-2.5 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 1 year

How to grow

Cultivation Grow in humus-rich, fertile, well-drained soil in full sun or light dappled shade. Incorporate well-rotted organic manure before planting and apply a balanced liquid fertilizer every two weeks when in growth. Deadhead regularly to prolong flowering. See sweetpea cultivation

Propagation Propagate by seed. Sow in a cold frame in early autumn, early spring or in-situ in mid-spring

Suggested planting locations and garden types Cut Flowers Flower borders and beds Wall-side Borders City & Courtyard Gardens Cottage & Informal Garden Patio & Container Plants

How to care

Pruning No pruning needed but deadhead as soon as flowers fade

Pests May be attacked by aphids, slugs, snails and thrips

Diseases May be subject to powdery mildews, fusarium wilt, foot rot, root rot and virus diseases

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