Corymbia ficifolia

RHS Plant Profile

flowering gum

Other common names

red gum, red-flowering gum, scarlet-flowering gum

Synonyms

Eucalyptus ficifolia

Trees

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Tender evergreen tree about 6-15m depending on local conditions, with rough, dark greyish-brown bark, and ovate to broadly lance-shaped, mid to dark green leaves, paler beneath to 15cm long. From summer to autumn bears large clusters of 3-7 scarlet or flame-coloured flowers towards the ends of the branches followed by urn-shaped woody seed capsules

Position

Full sun

Soil Types

Loam

Max Height

Higher than 12 metres

Max Spread

wider than 8 metres

Size

Time to Maturity: 10–20 years
Max Spread: wider than 8 metres
Max Height: Higher than 12 metres

Growing Conditions

Loam

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

Position

Full sun

Aspect: South–facing or West–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: Myrtaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Spreading branched
Genus: A genus of around 100 species of evergreen trees, native to Australia, with green foliage, peeling bark and masses of bright red, pink or orange flowers
Name Status: Correct
Plant Range: South Australia

How to Grow

Cultivation

In frost-free areas, grow in neutral to acid soil that doesn't dry out, in full sun with shelter from wind; in frost-prone areas, grow in a cool or temperate greenhouse, in a mix of lime-free potting compost and grit, in full light with good ventilation. Water freely in spring and summer and apply a general fertiliser monthly, water sparingly in winter. See eucalyptus cultivation

Propagation

Propagate by seed at 13-18°C in spring and summer

Suggested planting locations and garden types

Coastal
Sub-tropical
Conservatory and greenhouse
Cut flowers

Pruning

Pruning group 1, or for the best display of juvenile foliage use Pruning group 7. May need restrictive pruning under glass. See Eucalyptus: pruning.

Pests

May be susceptible to eucalyptus gall wasp and eucalyptus sucker

Diseases

May be susceptible to silver leaf and oedema