Pelargonium 'Polka' (U) | geranium 'Polka'

Conservatory Greenhouse Houseplants Bedding

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'Polka' is a tall-growing cultivar that bears deep salmon-orange flowers with very deep dark red markings on the upper petals

Position

Full sun

Soil Types

Loam

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

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

Growing Conditions

Loam

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

Position

Full sun

Aspect: South–facing or West–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): H1C

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Geraniaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Bushy
Genus: Pelargonium can be perennials, sub-shrubs or shrubs, sometimes succulent and mostly evergreen, with palmately lobed or pinnately divided leaves and clusters of slightly irregular, 5-petalled flowers
Name Status: Accepted
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: Unique pelargoniums are shrubby perennials with often pungently scented, rounded, lobed or more deeply cut foliage and clusters of single, funnel-shaped white, pink, red, orange or purple flowers to 3cm across

How to Grow

Cultivation

As with all pelargonium cultivation, plants enjoy good light and frost-free conditions. A regular high potash feed through spring and summer promotes flowering

Propagation

Propagate by softwood cuttings in spring or summer

Suggested planting locations and garden types

City and courtyard gardens
Patio and container plants
Flower borders and beds

Pruning

Cut back old plants by half in early spring to promote flowering; deadhead regularly

Pests

Generally trouble-free, but may suffer from aphids in spring

Diseases

Generally disease-free, but may be susceptible to grey moulds, pelargonium rust and pelargonium viruses