Maurandya barclayana

RHS Plant Profile

Mexican viper

RHS

Other common names

angels trumpet

Synonyms

Asarina barclaiana

Climber Wall Shrub Conservatory Greenhouse Herbaceous Perennial

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A herbaceous climberwith soft, bright green, ivy-shaped leaves and flared, tubular flowers with white tubes and white, pink or dark purple petal lobes, produced in summer and autumn

Position

Full sun

Soil Types

Loam, Sand

Max Height

2.5-4 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 1.5-2.5 metres
Max Height: 2.5-4 metres

Growing Conditions

Loam Sand

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

Position

Full sun

Aspect: West–facing or South–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): H2

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Plantaginaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Climbing
Genus: Maurandya are twining, woody-based, herbaceous perennial climbers. The leaves are triangular to broadly-oval, sometimes lobed, and the trumpet-shaped blooms are produced over a long period in summer and autumn
Name Status: Correct
Plant Range: Mexico

How to Grow

Cultivation

Under glass grow in peat-free, loam-based compost in bright light but with shade from hot sun. May also be grown as a tender annual outdoors in moist but well-drained soil in full sun

Propagation

Propagate by seed sown at 13-18°C in early spring, or root softwood cuttings with bottom heat in late spring

Suggested planting locations and garden types

Cottage and informal garden
Patio and container plants
City and courtyard gardens
Mediterranean climate plants
Flower borders and beds
Wall side borders

Pruning

Remove dead top growth in autumn

Pests

Generally pest-free

Diseases

Generally disease-free