False Aralia vs Pennisetum Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
False Aralia
Plerandra elegantissima (syn. Dizygotheca elegantissima)
False Aralia is a slender, upright evergreen shrub or small tree known for its elegant, deeply lobed, almost palmate leaves. In its native habitat, it can reach heights of up to 15-20 feet, but when grown indoors as a houseplant, it typically stays much smaller. The leaves are typically dark green, sometimes with reddish or bronze hues, and have a leathery texture. It is grown for its unique foliage and architectural form, adding a touch of tropical elegance to indoor spaces. It's not naturally an indoor plant, and requires specific conditions to thrive.
Pennisetum
Pennisetum setaceum
Pennisetum setaceum is a perennial bunchgrass known for its graceful, arching foliage and bottlebrush-like flower spikes. Typically grown as an ornamental grass, it adds texture and movement to landscapes. The foliage can range from green to reddish-purple, with the flower plumes often appearing in shades of pink, purple, or white. It is primarily an outdoor plant, thriving in full sun and well-drained soil. People grow it for its aesthetic appeal, drought tolerance, and ability to attract birds.
Quick Plant Comparison
| Feature | False Aralia | Pennisetum |
|---|---|---|
| Light | Bright indirect light. Avoid direct sunlight, which can scorch the leaves. | Full sun (at least 6-8 hours of direct sunlight daily) |
| Watering | Every 7-10 days, depending on environmental conditions and pot size. | Every 1-2 weeks, depending on weather and soil drainage |
| Humidity | 50-70% | 30-50% |
| Temperature | 18-24°C | 18-30°C |
| Care Level | Expert | Expert |
| Growth Rate | Slow To Moderate | Moderate |
| Max Height | 1-2 meters (indoors) | Rarely grown indoors, outdoor height up to 1.2 meters |
| Pet Safety | ❌ Toxic To Pets | ✅ Safe |
| Soil | Well-draining potting mix, such as a blend of peat moss, perlite, and vermiculite. | Well-drained soil, sandy or loamy |
| Beginner Friendly | ❌ No | ❌ No |
| Weekly Maintenance | 15 minutes weekly | 15 minutes weekly |
🔬 Botanical Information — Comparing These Plants
False Aralia
| Scientific Name | Plerandra elegantissima (syn. Dizygotheca elegantissima) |
|---|---|
| Family | Araliaceae |
| Native To | New Caledonia |
| Also Known As | False Aralia, Finger Aralia, Spider Aralia |
| Leaves | The leaves of False Aralia are compound, with 7-11 leaflets radiating from a central point. Each leaflet is long and narrow, with serrated edges. The leaves are typically dark green, sometimes with reddish or bronze hues, and have a leathery texture. They are approximately 5-10 cm long. |
| Flowers | False Aralia rarely flowers indoors. When it does flower (typically outdoors), it produces small, inconspicuous flowers in clusters. |
Pennisetum
| Scientific Name | Pennisetum setaceum |
|---|---|
| Family | Poaceae |
| Native To | Tropical Africa, Southwest Asia, Arabian Peninsula |
| Also Known As | Crimson Fountaingrass, Purple Fountaingrass |
| Leaves | The leaves are long, narrow, and grass-like, typically green but can range to reddish-purple in some cultivars like 'Rubrum'. They have a slightly rough texture and arch gracefully. |
| Flowers | It rarely flowers indoors. Outdoors, it produces bottlebrush-like flower spikes in shades of pink, purple, or white. The flowers are feathery and add to the plant's ornamental appeal. |
📏 Size & Growth — Plant Comparison
False Aralia
Pennisetum
🌱 Propagation — Comparing Plant Growth
False Aralia
Methods: Stem cuttings, Air layering, Seed (difficult)
Difficulty: Moderate
Tips: Take stem cuttings in spring or summer. Use rooting hormone and provide high humidity. Air layering is another option for larger plants.
Pennisetum
Methods: Seed, Division
Difficulty: Easy
Tips: Divide clumps in spring or fall. Sow seeds in spring after the last frost.
✨ Benefits & Features — Comparing Plant Value
False Aralia
The False Aralia stands out due to its deeply lobed, almost palmate leaves, which give it a distinctive and elegant appearance. Its slender, upright growth habit also makes it a striking focal point in indoor spaces.
- ✓ Adds a unique architectural element to indoor spaces.
- ✓ Provides a touch of the tropics.
- ✓ Can improve indoor humidity levels (slightly).
- ✓ Offers a visually interesting focal point.
- ✓ Can be a rewarding challenge for experienced plant owners.
- ⚠️ Toxic to pets
Pennisetum
Its bottlebrush-like flower spikes and arching foliage create a graceful and dynamic appearance. The 'Rubrum' cultivar offers striking reddish-purple foliage, adding a unique color element to landscapes. It is also drought-tolerant once established.
- ✓ Adds visual interest to gardens
- ✓ Provides habitat for birds
- ✓ Drought-tolerant, reducing water consumption
- ✓ Low maintenance once established
- ✓ Erosion control on slopes
- 🐾 Pet Safe
📅 Maintenance Schedule — Plant Care Comparison
False Aralia
Pennisetum
🌞 Light Requirements
False Aralia
Bright indirect light. Avoid direct sunlight, which can scorch the leaves.
Low light tolerant: ❌ No
Pennisetum
Full sun (at least 6-8 hours of direct sunlight daily)
Low light tolerant: ❌ No
💧 Watering Needs
False Aralia
Water thoroughly when the top inch of soil feels dry to the touch. Ensure good drainage to prevent root rot. Overwatering can lead to yellowing and leaf drop, while underwatering can cause the leaves to become crispy and brown.
Pennisetum
Water deeply when the top inch of soil feels dry. Avoid overwatering, as this can lead to root rot. In containers, ensure proper drainage. During the growing season, water more frequently. Reduce watering in the winter.
🌡️ Temperature & Humidity
False Aralia
Temperature: 18-24°C
Humidity: 50-70%
Pennisetum
Temperature: 18-30°C
Humidity: 30-50%
🤔 Which Plant Is Right For You?
False Aralia
Plerandra elegantissima (syn. Dizygotheca elegantissima)Experienced plant enthusiasts who can provide the specific environmental conditions required for this plant to thrive.
✅ Choose This Plant If...
- You appreciate unique and architectural foliage.
- You can provide bright, indirect light and high humidity.
- You are experienced with caring for more demanding houseplants.
- You want to add a touch of the tropics to your indoor space.
- You are willing to monitor for pests and diseases regularly.
❌ Skip This Plant If...
- You are a beginner plant owner.
- You have pets that may ingest the plant.
- You cannot provide high humidity levels.
- You have limited access to bright, indirect light.
Pennisetum
Pennisetum setaceumGardeners looking for drought-tolerant ornamental grasses for sunny locations.
✅ Choose This Plant If...
- It adds beautiful texture and movement to gardens
- It is drought-tolerant once established
- It attracts birds to the garden
- The 'Rubrum' cultivar provides striking reddish-purple foliage
- It is relatively low-maintenance once established.
❌ Skip This Plant If...
- It requires full sun and will not thrive indoors
- It can be invasive in some regions
- It needs well-drained soil and is susceptible to root rot if overwatered.
🎯 Quick Verdict
⚡ Key Differences Between These Plants
False Aralia has slow to moderate growth, while Pennisetum grows moderate.
💡 Pro Tips For Comparing These Plants
False Aralia Care Tips
False Aralia is a challenging houseplant that requires bright indirect light, high humidity, and consistent watering. It is prone to spider mites and other pests. Maintaining proper humidity is crucial for its health. It is not naturally an indoor plant and requires specific care to thrive indoors.
- Maintain high humidity by misting regularly or using a humidifier.
- Provide bright, indirect light to prevent leaf drop.
- Water thoroughly when the top inch of soil is dry, but avoid overwatering.
- Fertilize regularly during the growing season with a balanced liquid fertilizer.
- Monitor for pests, such as spider mites, and treat promptly.
Pennisetum Care Tips
Pennisetum setaceum is primarily an outdoor plant and is difficult to grow indoors due to its high light requirements. It needs full sun and well-drained soil. Overwintering indoors is possible in very bright locations, but plant will likely decline.
- Plant in well-drained soil to prevent root rot.
- Provide full sun for optimal growth and color.
- Cut back foliage in late winter or early spring.
- Monitor for pests and diseases regularly.
- Avoid over-fertilizing, as this can lead to excessive growth.
⚠️ Common Problems & Solutions — Plant Care Comparison
False Aralia
Pennisetum
❓ Frequently Asked Questions — Comparing These Plants
False Aralia
What are the light requirements for False Aralia?
False Aralia requires bright, indirect light to thrive. East- or west-facing windows are ideal, providing ample light without the harshness of direct sun. Direct sunlight, especially during the hottest part of the day, can scorch the delicate leaves, leading to brown spots and leaf drop. Insufficient light, on the other hand, can result in leggy growth and faded foliage.
How do I care for False Aralia?
False Aralia thrive in bright, indirect light; direct sunlight can scorch their leaves. Water when the top inch of soil feels dry, ensuring good drainage to prevent root rot. A well-draining potting mix is crucial. Maintain humidity levels of 50-60% through misting or a humidifier. Fertilize monthly during the growing season (spring and summer) with a balanced liquid fertilizer diluted to half strength.
How do I propagate False Aralia?
False Aralia can be propagated through stem cuttings or air layering. For stem cuttings, take a 4-6 inch cutting from a healthy stem, removing the lower leaves. Dip the cut end in rooting hormone and plant in a well-draining potting mix. Keep the soil moist and provide high humidity. Roots should develop in 4-6 weeks.
Pennisetum
What are the light requirements for Pennisetum?
Pennisetum requires at least 6-8 hours of direct sunlight per day to thrive and produce abundant flower plumes. Insufficient light can result in leggy growth, reduced flowering, and faded foliage color. When planting Pennisetum in the landscape, choose a location that receives full sun exposure throughout the day. If growing Pennisetum in containers, place them in a sunny spot on a patio or balcony. South-facing exposures are typically ideal. If you notice your Pennisetum is not flowering as expected, or if the foliage appears pale, consider moving it to a sunnier location. Supplemental lighting may be necessary in regions with short growing seasons or limited sunlight.
How do I care for Pennisetum?
Pennisetum thrives in full sun and well-draining soil. Water deeply but infrequently, allowing the soil to dry out slightly between waterings, especially once established. Fertilize in spring with a balanced, slow-release fertilizer to promote healthy growth and abundant blooms. Avoid over-fertilizing, as this can lead to excessive foliage growth at the expense of flowering. Prune back the foliage in late winter or early spring before new growth emerges. Remove any dead or damaged leaves throughout the growing season. Pennisetum is generally drought-tolerant once established but benefits from occasional watering during prolonged dry periods. Monitor for pests such as aphids or spider mites and treat accordingly. Provide adequate air circulation to prevent fungal diseases. Mulch around the base of the plant to help retain moisture and suppress weeds.
How do I propagate Pennisetum?
Pennisetum can be propagated by division or seed. Division is best done in spring. Dig up the plant and gently separate the root ball into smaller clumps, ensuring each clump has healthy roots and foliage. Replant the divisions in well-draining soil. To propagate by seed, sow seeds indoors in early spring or directly outdoors after the last frost. Keep the soil moist until germination occurs. Stem cuttings are not a common propagation method for Pennisetum. Keikis are not applicable as Pennisetum does not produce them. Provide ample sunlight and water regularly. Seedlings should be hardened off before transplanting outdoors.
Last updated: May 3, 2026 — Plant care data reviewed and verified by our editorial team.