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Annual Biennial

Digitalis 'Silver Cub'
  • RHS Plants for pollinators

foxglove 'Silver Cub'

A biennial or short-lived perennial, with hairy, silvery semi-evergreen leaves and flower stems producing creamy-white spotted flowers throughout the summer

Synonyms
Digitalis purpurea subsp. heywoodii 'Silver Cub'
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Size
Ultimate height
0.5–1 metres
Time to ultimate height
1–2 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Grey Silver Green Grey Silver
Summer Grey Silver Cream White Green Grey Silver
Autumn Grey Silver Green Grey Silver
Winter Grey Silver Green Grey Silver
Position
  • Full sun
  • Partial shade
Aspect

South–facing or North–facing or West–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H4
Botanical details
Family
Plantaginaceae
Native to GB / Ireland
No
Foliage
Semi evergreen
Habit
Clump forming, 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

Unresolved

How to grow

Cultivation

Will grow in almost any soil or situation except very wet or very dry; ideal site is humus-rich soil in partial shade. See foxglove cultivation for further advice

Propagation

Propagate by division in spring

Suggested planting locations and garden types
  • Cottage and informal garden
  • Wildlife gardens
  • Patio and container plants
  • Cut flowers
  • Flower borders and beds
Pruning

Cut back the main flower spike as it fades to encourage the growth of flowering side shoots

Pests

May be susceptible to aphids and leaf and bud eelworm

Diseases

May be susceptible to leaf spots and powdery mildews

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