• 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

Rubus fruticosus agg. 'Loch Tay' (PBR) (B) Agm

blackberry 'Loch Tay'

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
  • Other common names blackberry 'Loch Tay'

  • Family Rosaceae

  • Genus Rubus can be deciduous or evergreen shrubs, often scrambling with bristly or prickly stems bearing simple, lobed, palmate or pinnate leaves and 5-petalled flowers followed by juicy, sometimes edible fruits

  • Details 'Loch Tay' is a semi-upright, compact blackberry cultivar with thornless canes up to 1.5m high. White flowers are followed by sweet, purple-black fruits cropping relatively early in the season

Characteristics

  • Foliage Deciduous

  • Habit Trailing

  • 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)

    H6

Colour

Sunlight

  • Full Sun

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

  • Exposure Sheltered

Soil

  • Loam

    Loam

  • Clay

    Clay

  • Sand

    Sand

  • MoistureWell-drained, Moist but well-drained

  • SoilLoam, Clay, Sand

  • pHNeutral

Size

  • Ultimate height 1-1.5 metres

  • Ultimate spread 1-1.5 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Most blackberry cultivars are fan-trained on free-standing post and wire support systems but this compact cultivar can be grown with minimal support. Mulch with well rotted compost or manure

Propagation Propagate by tip layering or from cuttings

Suggested planting locations and garden types Banks and Slopes Hedging & Screens Cottage & Informal Garden Patio & Container Plants

How to care

Pruning Cut out old canes following fruiting and tie in new canes. See pruning blackberries for more information

Pests May be affected by aphids, leafhoppers, raspberry beetle and gall mites

Diseases Generally trouble free

Did you find the information you were looking for?

RHS members can get exclusive individual advice from the RHS Gardening Advice team.

Join the RHS now

Get involved

We're a UK charity established to share the best in gardening. We want to enrich everyone's life through plants, and make the UK a greener and more beautiful place.