Monstera obliqua – Swiss Cheese Plant (WA Prohibited)

Monstera obliqua is a rare aroid species native to Central and South America, occurring from Panama through to parts of Brazil and Peru. It is most famous for its highly perforated leaves, which in some populations can have more empty space than leaf blade. This extreme fenestration is most pronounced in mature specimens from certain regional forms, while others show smaller or fewer perforations. The species grows as a climbing hemiepiphyte, rooting into host trees while sending aerial roots downwards toward the forest floor.

Growth in M. obliqua is slow compared to other Monstera, often producing just a few new leaves per season under cultivation. Each leaf develops progressively larger fenestrations as the plant matures. In the wild, its delicate foliage allows wind to pass through without tearing and filters light to the lower canopy. The plant produces inflorescences typical of the Araceae family, with a spadix and spathe, followed by edible fruits in natural conditions.

In cultivation, Monstera obliqua requires consistent warmth, high humidity, and bright, indirect light to perform well. It is usually grown in a loose, well-aerated mix to accommodate its fine roots, and benefits from climbing support to encourage leaf development. Due to its slow growth and specialised care requirements, it is primarily maintained by dedicated collectors and botanical institutions.

Care Tips:

• Light: Bright, indirect light; avoid direct sun which can scorch leaves.
• Water: Keep evenly moist but not waterlogged; allow the top layer to dry slightly between waterings.
• Humidity: Requires high humidity, ideally above 70%.
• Media: Use a loose, well-draining aroid mix with bark, perlite, and organic matter.
• Fertiliser: Apply a balanced, dilute fertiliser during the growing season.
• Temperature: Maintain between 20–28 °C; protect from cold drafts.
• Repotting: Repot only when root-bound, as growth is slow.