• 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

Ribes rubrum 'Jonkheer van Tets' (R)

redcurrant 'Jonkheer van Tets'

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 redcurrant 'Jonkheer van Tets'

  • Synonyms Ribes praecox 'Jonkheer van Tets'

  • Family Grossulariaceae

  • Genus Ribes can be deciduous or evergreen shrubs, sometimes spiny, with simple, usually palmately lobed leaves and small tubular or bell-shaped, solitary or racemose flowers borne in spring or summer, followed by juicy, sometimes edible berries

  • Details 'Jonkheer van Tets' is a culinary cultivar, producing heavy crops of large redcurrants on long strigs in early season

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • 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

  • Partial Shade

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

  • Exposure Sheltered

Soil

  • Clay

    Clay

  • Loam

    Loam

  • Sand

    Sand

  • MoistureWell-drained, Moist but well-drained

  • SoilClay, Loam, Sand

  • pHAcid, Neutral

Size

  • Ultimate height 1.5-2.5 metres

  • Ultimate spread 1-1.5 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Grow in a well-drained, fertile soil with a neutral to acid pH. Full sun is preferred, but partial shade is tolerated and plants can be trained against a north wall. Grow as a permanent framework as a bush, standard, cordon or fan. Keep the around the bushes free of other plants. Mulch with well rotted compost, manure or bark particularly on dry soils. Further redcurrant cultivation advice

Propagation Propagate by hardwood cuttings in autumn

Suggested planting locations and garden types Wall-side Borders Cottage & Informal Garden

How to care

Pruning Main pruning is carried out in dormant season, along with summer pruning of vigorous laterals

Pests Redcurrants can suffer from aphids, scale insects and sawflies

Diseases Fungal leaf spots and coral spot can occur

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