Syngonium Macrophyllum
📖 About this plant
Syngonium macrophyllum is a distinct and highly sought-after species within the Syngonium genus, quite different from the common S. podophyllum cultivars. The most striking difference is the leaf shape — while most Syngoniums have arrow-shaped leaves, S. macrophyllum produces large, velvety, heart-shaped leaves reminiscent of Philodendrons. The leaves have a soft, matte, almost suede-like texture in deep green on the upper surface, while the underside is a rich pink-red that becomes visible when leaves move in a breeze or when viewed from below. This velvety texture and the dramatic red undersides make it one of the most tactile and visually interesting Syngonium species. As a rainforest understory plant, it requires more consistent humidity and warmth than common cultivars.
🧑🌾 Care requirements
Medium Indirect Light
When top 2-3 cm of soil is dry
60-80%
20-30°C (68-85°F)
Well-draining aroid mix with perlite, orchid bark, sphagnum moss, and coco coir
Balanced liquid fertilizer every 4-6 weeks during growing season — dilute to half strength
🌐 Common Names
📋 Plant facts
- 🌍 Origin
- Central America — Mexico to Panama (natural species Syngonium macrophyllum)
- 📏 Max height
- 90-150 cm (3-5 ft) climbing
- 📐 Spread
- 45-75 cm (1.5-2.5 ft)
- 🕰️ Bloom time
- Occasionally in summer — rare indoors
- 🎨 Bloom color
- White to pale green spathe
- 🍃 Foliage color
- Large, velvety, heart-shaped (not arrow-shaped) leaves with a soft matte green surface and prominent pink-red undersides
- ⏳ Lifespan
- Perennial (5-10+ years indoors)
- 📈 Growth rate
- Moderate
- ☠️ Toxicity
- Toxic to cats and dogs — calcium oxalate crystals cause oral irritation, drooling, vomiting, and difficulty swallowing
- 🌱 Propagation
- Stem cuttings in moist sphagnum moss or perlite; roots in 3-4 weeks. Slower to root than S. podophyllum cultivars
🛡️ Health & Safety
Toxic to cats and dogs — calcium oxalate crystals cause oral irritation, drooling, vomiting, and difficulty swallowing
Common issues
- Very sensitive to low humidity (leaf edges brown and curl)
- cold damage below 15°C (59°F)
- slower growth than common cultivars
- root rot from overwatering
- mealybugs on velvety leaves
- yellowing from direct sunlight exposure
- leaf drop from sudden temperature changes
💡 Care tips
- This species demands higher humidity (60-80%) — a humidifier or terrarium setup works well.
- Unlike common Syngoniums, the leaves are heart-shaped, not arrow-shaped.
- The pink-red undersides are a stunning feature — display at a height where they're visible.
- Avoid direct sunlight which damages the velvety leaf surface.
- Water with room-temperature filtered water.
- Provide a moss pole for climbing to encourage larger, more mature leaf development.
- The velvety texture means water droplets spot the leaves — water at the base rather than overhead.
