Common Names: Monstera Siam
Botanical Names: Monstera pinnatipartia 'Siam'
Monstera pinnatipartita 'Siam' is one of those rare vining plants that always makes the wish list, and there's nothing better than finally crossing it off! This large specimen still needs time to develop the skeleton-shaped leaves, but with the proper care and a little patience, you will be in awe of the intricate ribbon-like fingers that appear with time.
Although Monstera Siam is similar to Monstera Peru while immature, they mature to show off very different leaves.
Light
These indoor plants can handle low light, but if you want them to grow faster and produce larger leaves, provide medium to bright indirect light. In a north- or east-facing window, you can place them close to access more sun, or you can keep them out of reach of direct light in a south- or west-facing window. Learn more about light requirements for indoor plants.
Water
Monstera loves a good soaking after the soil has almost completely dried out. Water more often during the warmer months while they are growing, and reduce watering during the winter months, letting the soil almost completely dry out between watering. Monstera Siam needs to be watered more frequently than the larger leafed deliciosa because the Siam’s leaves are thinner and hold less moisture.
Soil
Monstera Siam needs a soil medium that can retain moisture but drain excess water to avoid root rot. Most pre-mixed soils will suffice. Make sure that there is plenty of organic matter, like coco-coir, peat moss, or shredded leaves, and avoid soils that contain moisture retaining crystals. If your soil drains too quickly, we recommend re-potting your monstera into a compost-rich soil mixture. Learn how to create your own universal soil mixture for all of your indoor plants!
Temperature
Monstera will grow in most household temperatures, but a temperature between 65-85℉ is ideal. They can survive in temperatures as low as 50℉, but the cold temperature will stop growth.
Humidity
All species in the monstera genus benefit from higher humidity levels. The best way to increase humidity is to add a humidifier to your room. Trays filled with pebbles and water can help increase the humidity immediately around your plants or try grouping your indoor plants closer.
Fertilizer
These houseplants love to be fertilized during their active growing season, so be sure to use either ¼-diluted fish emulsion with iron or ¼-diluted complete liquid fertilizer twice a month. Another option is to top-dress your plants with compost (like worm castings) in the spring. It will slowly release nutrients to the roots throughout the growing season. Learn more about fertilizing indoor plants.
Growth Rate
Monstera pinnatipartita ‘Siam’, once they are established, are fast growers. These vining indoor plants can reach dizzying heights up to 12+ feet or more indoors when given the right conditions. We recommend pruning the back to keep them from getting leggy.
Pet Friend or Foe
All species of monstera are toxic to pets, Foe!
Pro Tips
- Rotate your monstera to promote a complete, balanced indoor plant.
- When trimming the houseplant, cut under the node (swollen nodule where the leaves and aerial roots form) to propagate a new plant!
- Always check the leaves (top and bottom) during your care sessions. Check for unwanted guests (pests and diseases).
- Use well-draining soil that is rich in organic matter when re-potting your monstera.
- Use a sturdy stake when staking up your Monstera Siam, as the foliage and stems can become heavy over time.