Achimenes 'Paul Arnold'

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hot water plant 'Paul Arnold'

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Houseplants Conservatory Greenhouse

A tender, rhizomatous perennial with whorls of 3-4 dark green leaves, red-purple beneath. From summer to autumn it bears flat, purple flowers to 5cm across, with white throats suffused with yellow and purple. Becomes dormant in winter

Position

Full sun, Partial shade

Soil Types

Loam

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
1 year
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

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

Position

Full sun Partial shade
Aspect
East–facing or South–facing or West–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)
H1C

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Gesneriaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus
Achimenes are rhizomatous herbaceous perennials with scaly rhizomes producing trailing stems bearing simple, opposite or whorled leaves and salver-shaped showy flowers in the leaf axils in summer and autumn
Name Status
Unresolved

How to Grow

Cultivation

Grow under glass in either peat-free, multi-purpose compost or peat-free John Innes No 2 loam-based compost in bright filtered light. To bring rhizomes into growth in spring, temperatures of 16-18°C (61-64°F) are ideal. Water sparingly until summer when plants should be watered freely. Apply a balanced liquid fertiliser at quarter strength at each watering

Propagation

Propagate by dividing rhizomes or taking stem cuttings in spring

Suggested planting locations and garden types

  • Houseplants
  • Conservatory and greenhouse

Pruning

No pruning required

Pests

May be susceptible to aphids, glasshouse red spider mite and thrips

Diseases

Generally disease-free