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Prunus domestica 'Imperial Gage' (D) AGM

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© RHS

Characteristics

Plant type

Fruit (edible)

Habit

Bushy

Resilience

Hardiness

H5 (hardy - cold winter)

Colour

Flower

White in Spring

Foliage

Green in Spring and Summer

Fruit

Dark Yellow in Summer

Size

Ultimate height

2.5-4 metres

Ultimate spread

2.5-4 metres

Time to ultimate height

5-10 years


Preferred common name

plum 'Imperial Gage'

Family

Rosaceae


Prunus can be deciduous or evergreen trees or shrubs with showy flowers in spring, and often good autumn foliage colour. Some have edible fruit in autumn, and a few species have ornamental bark

'Imperial Gage' is a greenish-yellow, juicy sweet gage that crops reliably. Partly self-fertile and in p<font size="1" face="FSAlbert-Regular"><font size="1" face="FSAlbert-Regular"><font size="2">ollination group 2, but will fruit better with a pollination partner from group 1, 2 or 3. Flowering time is very early so it is subject to frost damage. Fruiting season is around the middle of August</font></font></font>

Synonym(s)

  • Prunus domestica 'Denniston's Superb'

How to grow

Sunlight

  • Full sun

Aspect

  • South-facing or West-facing
  • Sheltered

Cultivation

Grow in moist, but well-drained soil in full sun. Suitable for all training forms including fan-trained. Keep a weed-free area of at least 60cm radius around trunk. Thin fruit if necessary. Irrigate in dry periods

Soil

  • Well-drained or Moist but well-drained
  • Neutral
  • Loam or Sand

Propagation

Propagate by budding or grafting onto a rootstock for fruit. The rootstock used will affect the size of the plant

Suggested planting locations and garden types

Cottage/Informal Garden or Wall-side Borders


How to care

Pruning

Regular pruning required according to tree form. Pruning plums or Prune established fans

Pests

Can suffer from plum aphid, caterpillars, fruit tree red spider mite, brown scale, plum moth and bullfinches

Diseases

Susceptible to silver leaf, bacterial canker and brown rot