Veronica regina-nivalis (H)

RHS Plant Profile
round-leaved synthyris

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Other common names

round-leaved synthyris, snow queen

Synonyms

Synthyris reniformis, Synthyris rotundifolia var. sweetseri

Herbaceous Perennial

An evergreen, clump-forming perennial to 10cm high with rounded to kidney-shaped, toothed, dark green, sparsely hairy leaves. Short spikes of broadly bell-shaped, purple-blue flowers are borne in spring

Position

Full sun, Partial shade

Soil Types

Sand, Loam, Chalk

Max Height

Up to 10 cm

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
Up to 10 cm

Growing Conditions

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

Position

Full sun Partial shade
Aspect
East–facing or North–facing or South–facing or West–facing
Exposure
Exposed or 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)
H5
Drought Resistance
Yes

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Plantaginaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Clump forming
Genus
Veronica can be annuals, perennials or sub-shrubs with paired leaves and small flowers usually in terminal or axillary racemes or spikes
Name Status
Correct
Horticultural Group

Horticultural Classification Codes

Horticultural Classification Codes are often given to genera which have a large number of species or cultivars. They are used to categorise cultivated plants based on specific, shared characteristics such as shape, colour, size or flowering time, and can be displayed as letters or numbers

For example:
Dahlia ‘Sunset Kate (Sin) = Single flower
Rosa ‘Marigold’ (HT) = Hybrid Tea

This genus has changed from Hebe to Veronica

How to Grow

Cultivation

Grow in moist but well-drained, acidic or neutral soil in full sun or partial shade

Propagation

Propagate by seed or by division

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Gravel garden
  • Flower borders and beds

Pruning

No pruning required

Pests

May be susceptible to aphids

Diseases

high risk host for xylella fastidiosa. May be susceptible to downy mildews, fungal leaf spot, fungal rot, Phytophthora and sometimes honey fungus