Monstera deliciosa (Large form), commonly known as the Swiss cheese plant, is beloved for its large, heart-shaped leaves with distinctive splits and holes (fenestrations). Originating from tropical rainforests in Central America, these plants add a lush, jungle-like feel to any indoor space, making them a popular choice for houseplant enthusiasts. Here’s a detailed guide on how to care for a mature, large-form Monstera deliciosa:1. Light RequirementsOptimal: Bright, indirect light. Place it near an east- or west-facing window where it can receive plenty of natural light without direct sun exposure, which could scorch its leaves.Tolerant: Low light, but growth will be slower, and fenestrations may be less pronounced.2. Watering NeedsFrequency: Every 1-2 weeks, allowing the top 5 cm of soil to dry out between waterings.Signs of Overwatering: Yellowing leaves, particularly at the base.Signs of Underwatering: Crispy leaf edges and drooping.3. HumidityIdeal: High humidity (60-80%) to mimic its natural habitat. Regular misting or a humidifier nearby can help maintain suitable moisture levels, especially in winter.Tolerant: Average household humidity, though edges may turn brown if conditions are too dry.4. TemperatureOptimal Range: 18-27°C. Monstera deliciosa does well in typical indoor temperatures.Avoid: Temperatures below 10°C and cold drafts, which can stress the plant.5. Soil RequirementsType: Well-draining, rich potting mix that retains some moisture but allows excess to escape. A blend of peat-based potting mix with perlite or orchid bark is ideal.pH: Slightly acidic to neutral (5.5-7.0).6. FeedingFrequency: Feed every 4-6 weeks during the growing season (spring and summer) with a balanced, liquid fertiliser diluted to half strength.Autumn and Winter: Reduce feeding as growth slows.7. Pruning and SupportPruning: Remove yellow or damaged leaves at the base to encourage healthy growth. For large Monsteras, prune to control size if space is limited.Support: Monsteras are epiphytes and may benefit from a moss pole or trellis to mimic their natural growth habit, allowing the plant to climb and produce larger leaves with more fenestrations.8. PropagationMethod: Stem cuttings with at least one node. Place cuttings in water or moist soil, ensuring nodes are covered.Time: Best done in spring or summer when the plant is actively growing.9. Common Pests and ProblemsPests: Watch out for spider mites, mealybugs, and scale. Wipe down leaves regularly and inspect for pests.Issues: Yellowing from overwatering, browning edges from low humidity, and leggy growth from insufficient light.10. RepottingFrequency: Every 1-2 years as it outgrows its pot. Monsteras grow vigorously and can become root-bound quickly.Tip: Select a pot only slightly larger than the previous one to avoid root rot and provide fresh soil with each repotting.With the right care, a Monstera deliciosa can thrive and grow impressively large, adding a bold, tropical statement to any room.