Philodendron martianum

Philodendron martianum

Philodendron martianum or Flask Philodendron is a large-leaved tropical plant, easy to grow as a houseplant.

This is a climber, like all Philodendron, but it is semi-epiphytic: it can grow like a bush and climb when it finds a support to cling to.

Being native to the rainforests of Brazil, it can be satisfied with partial shade.

Description:

Philodendron martianum is climbing, semi-epiphytic, evergreen. The stems are short, the internodes close.

The leaf is dark green, leathery and measures up to 45 cm long and 15-20 cm wide.

Solitary axillary inflorescence consisting of a spathe about 15 cm long, yellowish-green on the outside and top, purple red at the bottom, and a white spadix. The male flowers are above, the female flowers below.

All parts of the plant contain calcium oxalate, which can irritate the skin.

Nomenclature:

Common names:

Flask Philodendron, Von Martius’ philodendron

Synonyms:

Caladium crassipes, Caladium macropus, Philodendron cannifolium

Philodendron martianum inflorescence

Philodendron martianum inflorescence

Etymology:

Philodendron: from the Greek philo- (loving) and dendron (tree)
Martianum: after Karl Frederich Von Martius, an Austrian botanist

Origin:

South East of Brazil



Habitat:

Rainforest

Care:

Temperature:

Room temperature, min. 15 °C, ideally 20-25 °C

Light:

Light, partial shade

Water:

Keep the soil moist, watering more often in summer than in winter. Avoid standing water at the bottom.

Substrate:

Very porous substrate, e.g. orchids substrate mixed with soil

Fertilizer:

Universal liquid fertilizer at half the recommended dose, every 2 weeks during the growing period, nothing in winter.

Sponging:

As the leaves gather dust, they may be washed or sponged with clear water. The dust does not harm the plants, it just looks ugly.

Repotting:

Repot in spring when the plant becomes too large for its pot

Propagation:

Seed, division when repotting

Sowing instructions:

  • sow in coir or potting soil with sand
  • plant 0.5-1 cm deep
  • moisten the substrate
  • temperature: 25 °C
  • germination time: 3-6 weeks

Image sources

  • Philodendron martianum: Own work
  • Philodendron martianum inflorescence: Scott Zona

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