Nematanthus gregarius

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clog plant

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clog plant RHS / Joanna Kossak

Synonyms

Nematanthus radicans

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Conservatory Greenhouse Houseplants
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A trailing sub-shrub with fleshy, glossy dark green leaves and clusters of up to three pouched, tubular, orange flowers 2.5cm long in summer

Position

Partial shade

Soil Types

Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
2–5 years
Max Spread
0.5-1 metres
Max Height
0.1-0.5 metres

Growing Conditions

Loam Sand
Moisture
Moist but well–drained
pH
Acid or Neutral

Position

Partial shade
Aspect
West–facing or East–facing
Exposure
Sheltered
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)
H1B

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Gesneriaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Trailing
Genus
Nematanthus are trailing evergreen perennials or subshrubs, with simple, fleshy leaves and solitary or clustered, tubular flowers in the leaf axils
Name Status
Correct
Plant Range
Brazil

How to Grow

Cultivation

Grow under glass, or as a houseplant, in peat-free potting compost in bright, filtered light, watering with soft water

Propagation

Propagate by softwood (stem-tip) cuttings in spring

Suggested planting locations and garden types

  • Patio and container plants
  • Sub-tropical
  • Conservatory and greenhouse

Pruning

No pruning required but remove shoot tips from young plants to encourage branching

Pests

May be susceptible to aphids, particularly on young growth

Diseases

Generally disease-free