Veronica spicata 'Icicle'

RHS Plant Profile

spiked speedwell 'Icicle'

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Synonyms

Veronica 'White Icicle'

Herbaceous Perennial

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A hardy, clump-forming herbaceous perennial to around 50cm in height, with lance-shaped, toothed, bright green leaves. Dense, upright spikes of white flowers appear from June to August

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.5-1 metres

Size

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

Growing Conditions

Chalk Clay Loam Sand

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

Position

Full sun

Aspect: East–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: Deciduous
Habit: Clump forming, Columnar upright
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: Accepted

How to Grow

Cultivation

Tolerant of a wide range of soils, as long as not extremely dry or prone to waterlogging, but prefers loamy, moderately fertile, moist but well-drained soils in full sun or light shade

Propagation

Propagate by division

Suggested planting locations and garden types

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

Pruning

deadhead after flowering, remove faded flower stems in the autumn

Pests

May be susceptible to aphids

Diseases

May be susceptible to downy mildews, fungal leaf spot, fungal rot, Phytophthora and sometimes honey fungus