Lacy Tree Philodendron vs Osmunda Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Lacy Tree Philodendron
Thaumatophyllum bipinnatifidum
Thaumatophyllum bipinnatifidum, commonly known as the Lacy Tree Philodendron or Selloum, is a large, evergreen plant characterized by its deeply lobed, glossy green leaves. Despite its common name, it is not a true philodendron. It exhibits a shrub-like growth habit, developing a thick, trunk-like stem as it matures. While it can reach impressive sizes outdoors, indoor specimens remain more manageable. It's popular for its bold, tropical appearance and relatively easy care, making it a statement piece in homes and offices.
Osmunda
Osmunda regalis
Osmunda regalis, the Royal Fern, is a large, deciduous fern known for its stately appearance. It features separate fertile and sterile fronds. The sterile fronds are bipinnate, reaching up to 2 meters in length, while the fertile fronds are shorter and bear spore-producing structures at their tips, giving them a unique, almost flowering appearance. This fern is primarily an outdoor plant, thriving in moist, shaded environments. People grow it for its ornamental value in gardens and landscapes, particularly in bog gardens or near water features. Attempting to grow it indoors is challenging due to its size and specific environmental needs.
Quick Plant Comparison
| Feature | Lacy Tree Philodendron | Osmunda |
|---|---|---|
| Light | Bright, indirect light. Avoid direct sunlight, especially during the hottest part of the day. | Partial shade to full shade. Avoid direct sunlight, especially during the hottest part of the day. |
| Watering | Every 1-2 weeks, depending on environmental conditions and pot size. | 2-3 times per week, depending on weather and soil drainage |
| Humidity | 40-70% | 60-80% |
| Temperature | 18-24°C | 10-24°C |
| Care Level | Moderate | Expert |
| Growth Rate | Moderate | Moderate |
| Max Height | 1-2 meters indoors | Outdoor: Up to 2 meters. Indoor (unlikely): 0.5 meters (struggling) |
| Pet Safety | ❌ Toxic To Pets | ✅ Safe |
| Soil | Well-draining potting mix, such as a blend of peat moss, perlite, and vermiculite. | Acidic, humus-rich, well-draining soil. A mix of peat moss, composted bark, and perlite is suitable. |
| Beginner Friendly | With Caution | ❌ No |
| Weekly Maintenance | 10 minutes weekly | 15 minutes weekly (outdoor) |
🔬 Botanical Information — Comparing These Plants
Lacy Tree Philodendron
| Scientific Name | Thaumatophyllum bipinnatifidum |
|---|---|
| Family | Araceae |
| Native To | South America, specifically Brazil, Paraguay, Bolivia, and Argentina |
| Also Known As | Lacy Tree Philodendron, Split-Leaf Philodendron, Selloum |
| Leaves | The leaves are large, deeply lobed, and glossy green. They can grow up to 90 cm long and wide. The lobes are highly dissected, giving the plant a lacy appearance. New leaves emerge unfurled and gradually expand. |
| Flowers | It rarely flowers indoors. When it does flower (typically outdoors), it produces a spadix and spathe, similar to other members of the Araceae family. |
Osmunda
| Scientific Name | Osmunda regalis |
|---|---|
| Family | Osmundaceae |
| Native To | Europe, Asia, Africa, and the Americas |
| Also Known As | Royal Fern, King Fern, Ditch Fern |
| Leaves | The sterile fronds are bipinnate, meaning they are divided into leaflets that are further divided into smaller leaflets. The leaflets are oblong to lance-shaped, with a smooth texture and a vibrant green color. The fertile fronds are shorter and have spore-bearing structures at the tips, giving them a brown, feathery appearance. |
| Flowers | Does not flower in the traditional sense. The fertile fronds produce spores, which appear as brown, flower-like structures at the tips of the fronds. |
📏 Size & Growth — Plant Comparison
Lacy Tree Philodendron
Osmunda
🌱 Propagation — Comparing Plant Growth
Lacy Tree Philodendron
Methods: Stem cuttings, Division, Seed (though rare indoors)
Difficulty: Moderate
Tips: Take stem cuttings with aerial roots and place them in water or directly into moist potting mix. Keep the cutting warm and humid. Division can be done when repotting mature plants.
Osmunda
Methods: Spore propagation, Division
Difficulty: Moderate
Tips: Spore propagation is slow and requires sterile conditions. Division is best done in early spring, separating rhizomes with healthy fronds.
✨ Benefits & Features — Comparing Plant Value
Lacy Tree Philodendron
The deeply lobed leaves are its most distinctive feature, giving it a lush, tropical appearance. It develops a trunk-like stem as it matures, adding to its architectural appeal. It is not a true philodendron, despite its common name.
- ✓ Adds a tropical aesthetic to your home
- ✓ Purifies the air by removing toxins
- ✓ Creates a relaxing and calming atmosphere
- ✓ Provides a sense of connection to nature
- ✓ Relatively easy to care for, boosting confidence in plant care abilities
- 🌬️ NASA-verified air purifier
- ⚠️ Toxic to pets
Osmunda
The Royal Fern is unique due to its separate fertile and sterile fronds. The fertile fronds have spore-producing structures at their tips, resembling flowers, which distinguishes it from other ferns. Its large size and stately appearance also make it a standout in any garden.
- ✓ Adds a lush, green aesthetic to the garden.
- ✓ Provides habitat for beneficial insects.
- ✓ Can help to control soil erosion in moist areas.
- ✓ Offers a sense of tranquility and connection to nature.
- ✓ Can be used as a focal point in a shaded garden.
- 🐾 Pet Safe
📅 Maintenance Schedule — Plant Care Comparison
Lacy Tree Philodendron
Osmunda
🌞 Light Requirements
Lacy Tree Philodendron
Bright, indirect light. Avoid direct sunlight, especially during the hottest part of the day.
Low light tolerant: ✅ Yes
Osmunda
Partial shade to full shade. Avoid direct sunlight, especially during the hottest part of the day.
Low light tolerant: ❌ No
💧 Watering Needs
Lacy Tree Philodendron
Water thoroughly when the top 2-3 inches of soil are dry. Allow excess water to drain away. Overwatering can lead to root rot, indicated by yellowing leaves and a musty smell. Underwatering results in drooping leaves and dry, crispy edges.
Osmunda
Keep the soil consistently moist, but not waterlogged. Water deeply when the top inch of soil feels slightly dry. Overwatering can lead to root rot, while underwatering will cause the fronds to dry out and turn brown.
🌡️ Temperature & Humidity
Lacy Tree Philodendron
Temperature: 18-24°C
Humidity: 40-70%
Osmunda
Temperature: 10-24°C
Humidity: 60-80%
🤔 Which Plant Is Right For You?
Lacy Tree Philodendron
Thaumatophyllum bipinnatifidumThose seeking a bold, tropical statement plant that is relatively easy to care for.
✅ Choose This Plant If...
- You want a large, statement plant for your home.
- You appreciate tropical foliage.
- You are looking for a relatively low-maintenance plant.
- You have a space with bright, indirect light.
- You want to add a touch of the jungle to your indoor environment.
❌ Skip This Plant If...
- You have pets that may ingest the plant.
- You have limited space.
- You tend to overwater plants.
Osmunda
Osmunda regalisGardeners with bog gardens or shaded, moist areas who want a striking, large fern.
✅ Choose This Plant If...
- You have a bog garden or consistently moist, shaded area.
- You appreciate large, statement ferns.
- You want a plant with unique fertile fronds.
- You are experienced with growing ferns.
- You want a plant that attracts beneficial insects.
❌ Skip This Plant If...
- You have a dry indoor environment.
- You lack a shaded outdoor space.
- You are a beginner gardener.
- You want a low-maintenance plant.
🎯 Quick Verdict
⚡ Key Differences Between These Plants
Lacy Tree Philodendron is rated Moderate care level, while Osmunda is Expert.
💡 Pro Tips For Comparing These Plants
Lacy Tree Philodendron Care Tips
Lacy Tree Philodendrons are relatively easy to care for indoors, provided they receive adequate light and are not overwatered. They require well-draining soil and occasional fertilization. Regular cleaning of the leaves will keep them healthy and attractive. They can become large, so provide ample space.
- Provide bright, indirect light for optimal growth.
- Allow the top 2-3 inches of soil to dry out before watering.
- Fertilize regularly during the growing season.
- Wipe the leaves with a damp cloth to remove dust and improve photosynthesis.
- Provide a support structure, such as a moss pole, for the plant to climb if desired.
Osmunda Care Tips
Osmunda regalis is primarily an outdoor plant and very difficult to grow indoors. It requires high humidity, consistently moist soil, and partial to full shade. Indoor attempts often fail due to insufficient humidity and light. It's best suited for bog gardens or shaded areas near water features.
- Ensure consistent moisture, especially during dry periods.
- Provide ample shade to prevent frond burn.
- Amend the soil with plenty of organic matter to improve drainage and nutrient availability.
- Protect from strong winds, which can damage the fronds.
- Monitor for pests and diseases regularly.
⚠️ Common Problems & Solutions — Plant Care Comparison
Lacy Tree Philodendron
Osmunda
❓ Frequently Asked Questions — Comparing These Plants
Lacy Tree Philodendron
What are the light requirements for Lacy Tree Philodendron?
Lacy Tree Philodendrons require bright, indirect light to thrive. Direct sunlight can scorch their leaves, causing unsightly burns. An east-facing window is often ideal, providing gentle morning sun. A north-facing window can also work, but the plant may grow slower. If placed near a south or west-facing window, use a sheer curtain to filter the intense light. Insufficient light can lead to leggy growth and smaller, less-defined leaves. Rotate the plant regularly to ensure even light exposure on all sides. Monitor the leaves for signs of light stress, such as yellowing or browning.
How do I care for Lacy Tree Philodendron?
Lacy Tree Philodendrons thrive in bright, indirect light; avoid direct sunlight to prevent leaf burn. Water when the top inch of soil feels dry, ensuring good drainage to prevent root rot. Maintain humidity levels around 60-70% by misting regularly or using a humidifier. Fertilize monthly during the growing season (spring and summer) with a balanced liquid fertilizer diluted to half strength. Repot every 1-2 years, or when the plant becomes root-bound, using a well-draining potting mix. Provide support, such as a moss pole, as the plant matures and its aerial roots develop. Regularly wipe the leaves to remove dust and pests. Keep temperatures between 65-80°F (18-27°C).
How do I propagate Lacy Tree Philodendron?
Lacy Tree Philodendrons can be easily propagated through stem cuttings, division, or air layering. For stem cuttings, take a cutting with at least one node and place it in water or directly into moist potting mix. Keep the cutting in a warm, humid environment until roots develop. For division, carefully separate the root ball into smaller sections and repot each section into its own container. Air layering involves wrapping a node with moist sphagnum moss and covering it with plastic wrap until roots form, then cutting below the roots and potting the new plant.
Osmunda
What are the light requirements for Osmunda?
Osmunda ferns thrive in bright, indirect light. Direct sunlight can scorch their delicate fronds, leading to browning and damage. An ideal location would be near an east-facing window, where they receive gentle morning light. If placed near a south- or west-facing window, use sheer curtains to filter the sunlight. Insufficient light can result in leggy growth and pale fronds. Observe your Osmunda’s fronds for signs of stress, such as browning or yellowing, which may indicate that the light is too intense. Rotate the plant periodically to ensure even light exposure on all sides.
How do I care for Osmunda?
Osmunda ferns require consistently moist, well-draining soil. Water thoroughly when the top inch of soil feels dry to the touch, ensuring the soil remains consistently damp but not waterlogged. Provide high humidity levels, ideally above 60%, through misting, a humidifier, or a pebble tray. Place your Osmunda in a location with bright, indirect light, avoiding direct sunlight which can scorch the fronds. Fertilize sparingly during the growing season (spring and summer) with a diluted liquid fertilizer formulated for ferns. Repot only when necessary, typically every 2-3 years, into a slightly larger pot with fresh, acidic potting mix. Remove any dead or damaged fronds to encourage new growth and maintain the plant’s aesthetic appeal. Protect from frost and extreme temperatures.
How do I propagate Osmunda?
Osmunda ferns can be propagated through division or spores. Division is best done in early spring. Carefully dig up the fern and gently separate the rhizome into sections, ensuring each section has healthy roots and fronds. Replant the divisions in fresh potting mix and water thoroughly. Propagating from spores is more challenging. Collect spores from mature fronds and sow them on a sterile substrate in a humid environment. Keep the substrate consistently moist and provide bright, indirect light. Germination can take several weeks to months. Division is the more reliable method for home gardeners. Ensure the parent plant is healthy before attempting propagation.
Last updated: May 7, 2026 — Plant care data reviewed and verified by our editorial team.