If you’re looking for a statement houseplant that truly lives up to the word ‘giant,’ your search ends here. The philodendron giganteum is a majestic indoor jungle giant that can bring a slice of the tropics into your home with its enormous, vibrant leaves.
This plant is surprisingly adaptable, but to see it thrive and reach its full, impressive potential, it needs the right care. This guide gives you everything you need to know, from finding the perfect spot to troubleshooting common problems.
Philodendron Giganteum
Native to the rainforests of the Caribbean, this philodendron is a climber. In the wild, it uses its aerial roots to scale tall trees, reaching for the dappled light of the canopy. Indoors, it won’t get quite that big, but a mature plant can easily produce leaves over two feet long. Each new leaf emerges a shiny, bright green and gradually deepens in color.
It’s a relatively fast grower during the warm months, and watching a new leaf unfurl is a spectacular event. With proper support, it makes a breathtaking focal point in any room.
Finding the Perfect Home for Your Plant
Light is the most important factor for healthy growth. Your philodendron giganteum needs bright, indirect light to prosper. Think of the light under a rainforest canopy—plenty of brightness but no direct sun beams scorching the leaves.
A spot near an east-facing window is ideal. A north-facing window might be too dim. If you only have a south or west window, place the plant several feet back or use a sheer curtain to filter the intense rays.
Signs of incorrect light include:
- Leggy growth & small leaves: The plant is stretching for more light.
- Yellowing leaves: Could be too much direct sun or, sometimes, not enough light.
- Brown, crispy patches: This is a sure sign of sunburn from direct exposure.
Watering Your Jungle Giant Correctly
Overwatering is the fastest way to harm your plant. These plants like their soil to partially dry out between drinks. The goal is consistently moist but never soggy soil.
Here’s a simple method:
- Stick your finger about 2 inches into the soil.
- If it feels dry at that depth, it’s time to water.
- Water thoroughly until you see it run out of the drainage holes.
- Empty the saucer underneath after 15 minutes so the roots aren’t sitting in water.
Watering frequency changes with the seasons. You might water once a week in summer and only every two or three weeks in winter. Always check the soil first; don’t water on a strict schedule.
Humidity & Temperature Preferences
As a tropical plant, it appreciates higher humidity. Average home humidity (around 40%) is okay, but it will be happiest with more. Aim for 60% or higher if you can.
You can increase humidity by:
- Using a humidifier nearby (most effective method).
- Placing the pot on a tray filled with pebbles and water (ensure the pot sits above the water line).
- Grouping it with other plants.
Keep it away from heating vents, air conditioners, and drafty windows. Ideal temperatures are between 65°F and 80°F. Avoid letting it sit in temperatures below 55°F.
Soil, Potting, and Support Needs
A well-draining, airy potting mix is essential. A standard houseplant soil can be too dense on its own. You can make a perfect mix by combining:
- 2 parts high-quality potting mix
- 1 part orchid bark or perlite
- 1 part coconut coir or peat moss
This blend retains some moisture while allowing excess water to drain quickly, preventing root rot.
Because this is a climbing plant, it needs support to grow upright and develop its large leaves properly. A moss pole is the best option. As the plant grows, gently tie its stem to the pole. Its aerial roots will eventually attach to the moss, which also provides extra moisture and nutrients.
Repot every 1-2 years in spring, or when you see roots growing out of the drainage holes. Only go up one pot size (about 2 inches wider in diameter) at a time.
Feeding for Fantastic Foliage
To support its rapid growth, feed your philodendron giganteum regularly during the growing season (spring through early fall). Use a balanced, water-soluble fertilizer (like a 10-10-10 or 20-20-20 formula) diluted to half the recommended strength.
Fertilize once a month. There’s no need to feed in the winter when growth naturally slows down. Over-fertilizing can damage the roots and cause brown leaf tips, so less is more.
Pruning and Propagation
Pruning is simple and helps maintain a pleasing shape. You can remove any yellowing or damaged leaves at the base of their stem. To control height, you can cut back the main stem just above a leaf node (the bump where a leaf meets the stem). This will often encourage new growth from that point.
You can easily make new plants from your cuttings. Here’s how:
- Using clean shears, cut a stem section that has at least one node and one or two leaves.
- Place the cutting in a jar of water, ensuring the node is submerged.
- Put it in a bright spot and change the water weekly.
- Once roots are a few inches long (in a few weeks), pot it up in fresh soil.
You can also root cuttings directly in moist sphagnum moss or your potting mix, but water propagation lets you see the progress.
Common Problems and Simple Solutions
Even with great care, you might encounter an issue. Here’s how to fix common problems.
Yellow Leaves
This is often caused by overwatering. Check your soil moisture and adjust your watering habits. It can also be a sign of underfeeding or, less commonly, not enough light.
Brown Leaf Edges or Tips
Usually a sign of low humidity or a buildup of salts and minerals from tap water or fertilizer. Try increasing humidity and using distilled, rainwater, or filtered water to water your plant.
Pests
Keep an eye out for common houseplant pests like spider mites, mealybugs, and scale. Wipe leaves regularly with a damp cloth to deter them. If you see pests, isolate the plant and treat it with insecticidal soap or neem oil, following the product instructions carefully.
Drooping Leaves
This can mean either too much or too little water. Feel the soil to diagnose which it is. Sometimes, it’s just a sign the plant is thirsty and will perk up a few hours after a good drink.
Frequently Asked Questions (FAQ)
Is the Philodendron Giganteum toxic?
Yes, like all philodendrons, it is toxic to pets and humans if ingested due to calcium oxalate crystals. Keep it out of reach of curious cats, dogs, and children.
How fast does a giant philodendron grow?
In ideal conditions with good light and warmth, it can grow quite quickly, putting out several new leaves during the spring and summer growing season.
Why are the new leaves on my philodendron smaller?
This is typically a sign of insufficient light. The plant isn’t getting enough energy to produce its characteristic large foliage. Try moving it to a brighter location.
Can I grow Philodendron giganteum in just water?
You can propagate cuttings in water indefinitely, but for the plant to reach its full size and long-term health, it’s best eventually planted in a chunky, well-draining soil mix where it can access more nutrients.
Do the leaves need to be cleaned?
Yes. Dust buildup on the large leaves can block sunlight. Gently wipe them down with a soft, damp cloth every few weeks to keep them photosynthesizing efficiently and looking their best.
Caring for a philodendron giganteum is a rewarding experience. Its dramatic presence and relatively straightforward needs make it a fantastic choice for plant enthusiasts ready to care for a larger specimen. Pay attention to its light and water needs, provide a moss pole to climb, and you’ll be rewarded with a stunning, healthy jungle giant that transforms your space for years to come.