Plant guide
フィロデンドロン
Watering rhythm
Every 5–10 days
Philodendrons are tropical plants from Central and South America in the Araceae family, prized for their beautiful heart-shaped leaves. With many varieties available—some vining, some upright—they're remarkably resilient and easy to care for, making them perfect for anyone new to houseplants. They adapt well to indoor light conditions and bring a gentle, natural touch to any space.
Bright, indirect light is ideal, though they'll also grow in partial shade. Avoid direct sunlight. Keep temperatures between 15–28°C (59–82°F), and try not to let them drop below 10°C (50°F). They appreciate humidity above 50%, but they'll do fine in a typical indoor environment. Good air circulation is best.
Light and temperature change a plant's metabolism, so the ideal cadence shifts with the seasons.
Spring
Every 5–8 days
Summer
Every 4–7 days
Autumn
Every 6–9 days
Winter
Every 9–14 days
Water thoroughly until it drains from the pot's bottom once the soil surface feels dry. Check the soil daily with your finger—when it's dry down to your first knuckle, it's time to water. During winter, growth slows, so hold back a little. Always empty the saucer after watering.
Quick lookup from symptom to likely cause and action.
| Symptom | Likely cause | What to try |
|---|---|---|
| Leaves turning yellow | Overwatering and root rot are the usual culprits. Too much water in winter especially prevents roots from breathing and causes decay. | Let the soil dry out between waterings. If root rot has set in, remove the plant from its pot, trim away any blackened roots, and repot into fresh soil. |
| Leaves turning brown and wilting | The opposite problem—not enough water. Skipping watering during warm seasons can leave leaves drooping. | Water generously from the base until the entire soil is moist. If the leaves don't bounce back within a few hours, check the root system. |
| Leaves losing color or looking pale | A sign of insufficient light. Keeping your plant in a dim spot for too long causes new leaves to lose their vibrant color. | Move it closer to a window or to a brighter spot. Within a few weeks, you'll notice the fresh leaves coming in with deeper, richer color. |
| Spider mites or mealybugs | These pests thrive in dry air and often hide on the undersides of leaves. | Rinse the affected leaves, including the undersides, with water. Misting the foliage regularly with a spray bottle helps prevent infestations. |
| New leaves growing smaller than usual | Either a lack of nutrients or the roots becoming too crowded. If you haven't repotted in a while, the plant is likely running low on food. | Feed with diluted liquid fertilizer about once a month during spring and summer. Repotting every two years also helps refresh nutrients. |
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