Veronica filiformis

RHS Plant Profile

slender speedwell

Herbaceous Perennial

A very low-growing, creeping perennial, with very fine stems up to 50cm long, rooting at the nodes and small, rounded leaves. Small, cup-shaped flowers with pale and bright blue petals appear from mid-spring to mid-summer

Position

Full shade, Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

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

Chalk Clay Loam Sand

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

Position

Full shade Full sun Partial shade

Aspect: East–facing or South–facing or West–facing or North–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): H7
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: Matforming
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

How to Grow

Cultivation

Initially introduced as a rockery plant, but has the potential to become a nuisance and may be unwanted in fine lawns. See speedwell for further information

Propagation

Rarely sets seed; spreads naturally by rooting fragments of stem

Suggested planting locations and garden types

City and courtyard gardens
Coastal
Cottage and informal garden
Patio and container plants
Wildflower meadow
Wildlife gardens
Banks and slopes
Flower borders and beds

Pruning

No pruning required

Pests

May be susceptible to aphids

Diseases

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