Philodendron 'Imperial Red'

RHS Plant Profile
philodendron 'Imperial Red'
philodendron 'Imperial Red' RHS / Joanna Kossak
Conservatory Greenhouse Houseplants

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

Position

Partial shade

Soil Types

Loam

Max Height

1-1.5 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
2–5 years
Max Spread
0.5-1 metres
Max Height
1-1.5 metres

Growing Conditions

Loam
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Partial shade
Aspect
South–facing or East–facing or West–facing
Exposure
Sheltered
Hardiness
H1A

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Araceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Columnar upright
Potentially harmful
Harmful if eatenskin/eye irritant/allergen. Wear gloves and other protective equipment when handling Pets: Harmful if eatenskin/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