Philodendron martianum

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Synonyms

Philodendron cannifolium

Conservatory Greenhouse Houseplants

A climbing species from the tropical rainforests of Brazil, where it grows against the trunks and branches in the understory of forest trees. The glossy green leaves are spear-shaped, with unusual swollen, spindle-shaped leaf stalks, hence its common name of fat boy. The plant can reach 90cm or so high indoors, and despite its provenance, adapts well to indoor conditions, although it is still rather rare in cultivation. On mature plants only, flowers can be produced consisting of a white, sheath-like spathe with darker burgundy colouration in the base, surrounding a white spadix or column

Position

Partial shade

Soil Types

Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
5–10 years
Max Spread
0.5-1 metres
Max Height
0.5-1 metres

Growing Conditions

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

Position

Partial shade
Aspect
East–facing or North–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)
H1A

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Araceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Climbing
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
Correct
Plant Range
E & S Brazil

How to Grow

Cultivation

Under glass, grow in an open, ericaceous, well-drained, but moisture-retentive mix, which can include, lava rock or pumice, fine fir bark and leafmould or chopped sphagnum moss, choosing a position in bright but diffused light. During the growing season, allow the surface of the compost to become just dry before thoroughly watering the compost. Avoid plants sitting in water which can cause the roots to rot. Apply a liquid houseplant fertiliser monthly during April to September. Water less frequently in winter, when growth slows right down, and stop feeding until the spring. Repot every 2-3 years. See Philodendron and houseplant cultivation for further advice

Propagation

Propagate by stem-tip or leaf bud cuttings

Suggested planting locations and garden types

  • Houseplants
  • Conservatory and greenhouse

Pruning

No pruning required, other than to trim stems as required

Pests

May be susceptible to red spider mite, mealybugs and scale insects

Diseases

Generally disease-free