• 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

Elatostema repens var. pulchrum

trailing watermelon begonia

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
trailing watermelon begonia

© RHS 2002

  • Other common names trailing watermelon begonia

  • Synonyms Elatostema pulchrum
    Pellionia pulchra

  • Family Urticaceae

  • Genus Elatostema can be perennials or subshrubs, with simple, evergreen leaves which are heavily mottled with silver or bronze, and insignificant greenish flowers

  • Details E. repens var. pulchrum is a trailing evergreen perennial to 10cm high, with purple stems bearing attractive grey-mottled, dark green leaves, veined deeper green, and purple beneath. Flowers insignificant

  • Plant range SE Asia

Characteristics

  • Foliage Evergreen

  • 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)

    H1B

Colour

Sunlight

  • Full Shade

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

  • Exposure Sheltered

Soil

  • Sand

    Sand

  • Clay

    Clay

  • Chalk

    Chalk

  • Loam

    Loam

  • MoistureMoist but well-drained

  • SoilSand, Clay, Chalk, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height Up to 10 cm

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Under glass grow in loam-based potting compost in bright, indirect light and shade from hot sun. Water freely and apply a balanced liquid fertiliser monthly when in growth and water moderately in winter. Can be grown outdoors in fertile, humus-rich soil in deep shade

Propagation Propagate by root cuttings at anytime of year

Suggested planting locations and garden types Low Maintenance Patio & Container Plants

How to care

Pruning Shorten shoots, when in growth, to maintain shape

Pests Generally pest free

Diseases Generally disease 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.