Digitalis 'Polkadot Polly' (Polkadot Series)

RHS Plant Profile
foxglove 'Polkadot Polly'

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Herbaceous Perennial
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A semi-evergreen perennial, to 1cm high in flower, with ovate to lance-shaped, slightly serrated dark green leaves, wider at the base and narrower on the stems. Upright spikes bearing numerous nodding, tubular and slightly flattened, coral pink to apricot coloured flowers with dark spotted throats are produced from mid summer into early autumn

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

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

Growing Conditions

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

Position

Full sun Partial shade
Aspect
South–facing or West–facing or East–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)
H6

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Plantaginaceae
Native to GB/Ireland
No
Foliage
Semi evergreen
Habit
Bushy, Columnar upright
Potentially harmful
TOXIC if eaten. Wear gloves and other protective equipment when handling TOXIC to pets - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus
Digitalis can be biennials or usually short-lived perennials forming a rosette of simple leaves with bell-shaped flowers in slender, erect, usually one-sided racemes
Name Status
Accepted

How to Grow

Cultivation

Will grow in almost any soil or situation except very wet or very dry; ideally a sheltered, warm site with humus-rich soil in light or partial shade. See foxglove cultivation for more detailed advice

Propagation

Propagate by seed, sown in pots in a cold frame in late spring, or by division in early spring. This is a sterile cultivar so will not produce viable seed

Suggested planting locations and garden types

  • Coastal
  • Cottage and informal garden
  • Wildlife gardens
  • Cut flowers
  • Flower borders and beds

Pruning

Deadhead to encourage more flowers

Pests

May be susceptible to aphids, leaf and bud eelworms, slugs and snails

Diseases

May be susceptible to powdery mildews, downy mildews and leaf spot