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The Yasuni form is particularly prized for its fenestrations. Its papery-thin leaves are extensively perforated, with dramatic holes covering much of the leaf blade, giving it a lace-like or skeletal appearance. Each leaf is unique, with some retaining more green surface while others are almost entirely fenestrated. This delicate, airy form makes it one of the most recognisable and extraordinary Monsteras in cultivation.
Due to its fragile leaves and slower growth habit, Monstera obliqua Yasuni is considered a plant for advanced collectors. When given the right support, such as a moss pole, it will climb and produce increasingly larger and more perforated foliage.
Requires bright, indirect light to maintain growth and fenestration. Too little light will slow development further, while harsh direct sunlight can scorch its paper-thin leaves.
Keep the soil evenly moist but never waterlogged. Water when the top 23 cm of soil feels dry. The species is sensitive to both underwatering and overwatering. Use distilled or rainwater where possible.
Temperature: Thrives in 2028C. Protect from draughts and avoid exposure below 18C.
Humidity: Extremely high humidity (80%+) is essential. Best grown in greenhouse conditions, terrariums, or under humidity domes.
Use a very airy, free-draining mix: peat-free compost blended with orchid bark, perlite, and sphagnum moss is ideal. Plant in a small pot to prevent excess moisture retention.
Apply a diluted, balanced fertiliser every 46 weeks during the growing season. Do not overfeed, as growth is naturally slow.
Minimal pruning is needed. Remove only damaged leaves. Support with a moss pole or climbing board to encourage upright growth and larger leaves.
A notoriously slow grower. Juvenile leaves are smaller and less perforated, while mature foliage develops extreme fenestrations. Indoor vines typically grow slowly, requiring patience and careful care.
Crispy edges: Low humidity.
Yellowing leaves: Overwatering or poor drainage.
Failure to thrive: Often linked to insufficient humidity or inadequate light.
Pests: Susceptible to thrips, spider mites, and mealybugs due to delicate foliage.
The Monstera obliqua group is legendary among collectors, often described as the holy grail of Monsteras. The Yasuni form, named after Ecuadors Yasuni National Park, is among the rarest and most sought-after. Its lace-like foliage makes it one of the most spectacular tropical aroids in existence, though it requires expert care to thrive.
Quick Care Summary
Light: Bright, indirect; avoid harsh sun
Water: Evenly moist; sensitive to drought and waterlogging
Temperature: 2028C; avoid below 18C
Humidity: Extremely high (80%+)
Soil: Airy, free-draining mix with moss/bark
Feed: Monthly, lightly in growing season
Growth: Slow-growing climber; extremely fenestrated, papery leaves
