Tweedia coerulea

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Synonyms

Oxypetalum caeruleum
Oxypetalum coeruleum

Climber Wall Shrub Conservatory Greenhouse
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A scrambling or twining evergreen sub-shrub to 1m or more, with oblong to lance-shaped leaves and small clusters of 5-petalled, sky-blue flowers 2.5cm across

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

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

Growing Conditions

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

Position

Full sun
Aspect
South–facing or East–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
Apocynaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Climbing
Genus
Tweedia is a scrambling evergreen subshrub with weakly twining stems bearing simple, hairy leaves and loose axillary clusters of star-shaped, 5-petalled flowers
Name Status
Correct
Plant Range
Brazil, Uruguay

How to Grow

Cultivation

Under glass grow in loam-based compost in full light; water freely in summer but keep just moist in winter. Can be grown outdoors in light, fertile, well-drained soil in frost-free area; can be treated as an annual in frost prone areas. Provide support for the climbing stems

Propagation

Propagate by seed sown at 15°C in spring or strike softwood cuttings in summer with bottom heat

Suggested planting locations and garden types

  • City and courtyard gardens
  • Patio and container plants
  • Cut flowers
  • Wall side borders

Pruning

Pruning group 13 in early spring

Pests

Generally pest-free

Diseases

Generally disease-free