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Conservatory GreenhouseHouseplants

Philodendron 'Imperial Red'

philodendron 'Imperial Red'

An upright plant up to around 1.2m tall with large, leathery leaves that emerge bright red before darkening with age to deep purple and dark, glossy green

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Size
Ultimate height
1–1.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.5–1 metres
Growing conditions
Loam
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Red Purple Green
Summer Red Purple Green
Autumn Red Purple Green
Winter Red Purple Green
Position
  • Partial shade
Aspect

South–facing or East–facing or West–facing

Exposure
Sheltered
Hardiness
H1A
Botanical details
Family
Araceae
Native to GB / Ireland
No
Foliage
Evergreen
Habit
Columnar upright
Potentially harmful
Harmful if eaten, skin/eye irritant/allergen. Wear gloves and other protective equipment when handling Pets: Harmful if eaten, skin/eye irritant/allergen - For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus

Philodendron can be shrubs, trees or climbers, with glossy, leathery, evergreen, simple to pinnately divided leaves, and tiny flowers borne within arum-like white, green or reddish spathes

Name status

Accepted

How to grow

Cultivation

Grow under glass in humus-rich, well-drained compost and in bright but filtered light . Maintain a minimum winter temperature of 15⁰C and water moderately, less in low temperatures. See Philodendron and houseplant cultivation for further advice

Propagation

Propagate by air layering

Suggested planting locations and garden types
  • Patio and container plants
Pruning

No pruning required

Pests

May be susceptible to scale insects and glasshouse red spider mite

Diseases

Generally disease-free

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.