Petunia Duo Series

RHS Plant Profile

petunia Duo Series

RHS

Annual Biennial Bedding

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Duo Series are bushy spreading annuals with double flowers to 5cm across, in shades of pink, mauve, red and purple, sometimes with darker veins

Position

Full sun

Soil Types

Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.5-1 metres

Size

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

Growing Conditions

Loam Sand

Moisture: Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun

Aspect: South–facing or East–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: Solanaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Bushy
Genus: Petunia can be annuals or perennials, with simple leaves and large, solitary, trumpet-shaped flowers in the upper leaf axils from late spring to autumn
Name Status: Accepted

How to Grow

Cultivation

Grow in light, well-drained soil in full sun, with shelter from drying winds. Plant out after frosts have passed

Propagation

Propagate by seed sown at 13-18°C in early spring

Suggested planting locations and garden types

Patio and container plants
City and courtyard gardens
Cottage and informal garden
Flower borders and beds
Garden edging

Pruning

Deadhead regularly

Pests

Aphids and slugs may be a problem

Diseases

May be susceptible to fungal foot rot and a virus