Strobilanthes dyeriana

RHS Plant Profile
Persian shield

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Persian shield RHS 2001

Other common names

royal purple plant

Synonyms

Strobilanthes dyeriana 'Persian Shield'

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An evergreen shrub to 1m in height, the lance-shaped dark green leaves with a striking silvery sheen over a reddish-purple flush; flowers light blue, funnel-shaped, 3cm in length, in short terminal spikes

Position

Full sun, Partial shade

Soil Types

Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
5–10 years
Max Spread
0.5-1 metres
Max Height
0.5-1 metres

Growing Conditions

Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
East–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)
H1B

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Acanthaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Genus
Strobilanthes can be evergreen or herbaceous perennials or subshrubs with simple, opposite leaves and spikes, cone-like clusters or loose panicles of tubular or funnel-shaped flowers
Name Status
Correct
Plant Range
Myanmar

How to Grow

Cultivation

Grow under glass in peat-free, loam-based compost in full light with shade from hot sun. Grow outdoors in light free draining soil in full sun to partial shade in a frost-free area. Pinch out young growth to encourage bushiness

Propagation

Propagate by seed or softwood cuttings

Suggested planting locations and garden types

  • Low Maintenance
  • Wall side borders

Pruning

Pruning group 9

Pests

May be susceptible to glasshouse red spider mite

Diseases

Generally disease-free