Corsican Mint vs Purple Fountain Grass Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Corsican Mint
Mentha requienii
Corsican Mint is a very low-growing, creeping perennial herb that forms a dense mat. It is best known for its intense minty aroma, released when walked upon or crushed. The plant features tiny, rounded, bright green leaves. It's primarily grown outdoors as a ground cover, between paving stones, or in rock gardens. While it can be grown indoors, providing the right conditions can be challenging, and it may not thrive as vigorously as it does outdoors. People grow it for its fragrance and ornamental value.
Purple Fountain Grass
Pennisetum setaceum 'Rubrum'
Purple Fountain Grass is a striking ornamental grass prized for its arching, burgundy-purple foliage and bottlebrush-like flower plumes. It typically grows in a mounded form, reaching several feet in height and width. While technically a perennial in warmer climates, it is often grown as an annual in cooler regions due to its sensitivity to frost. It is primarily an outdoor plant, grown for its dramatic texture and color in gardens and landscapes. People grow it for its ornamental value, adding movement and visual interest to borders, containers, and mass plantings.
Quick Plant Comparison
| Feature | Corsican Mint | Purple Fountain Grass |
|---|---|---|
| Light | Full sun to partial shade outdoors; Bright indirect light indoors, with some direct sun if possible. | Full sun (at least 6 hours of direct sunlight per day) |
| Watering | Every 2-3 days, depending on environmental conditions and pot size. | Every 7-10 days, depending on weather and soil drainage |
| Humidity | 40-60% | 20-50% |
| Temperature | 15-24°C | 18-30°C |
| Care Level | Moderate | Expert |
| Growth Rate | Fast | Moderate |
| Max Height | 2-5 cm | Outdoor: 0.6-1.5 meters. Indoor (unlikely to thrive): 0.3-0.6 meters |
| Pet Safety | ❌ Toxic To Pets | ✅ Safe |
| Soil | Well-draining, loamy soil. A mix of potting soil, perlite, and a bit of compost works well. | Well-draining soil, such as a sandy loam or a potting mix amended with perlite |
| Beginner Friendly | With Caution | ❌ No |
| Weekly Maintenance | 10 minutes weekly | 15 minutes weekly |
🔬 Botanical Information — Comparing These Plants
Corsican Mint
| Scientific Name | Mentha requienii |
|---|---|
| Family | Lamiaceae |
| Native To | Corsica, Sardinia, and mainland Italy |
| Also Known As | Corsican Mint, Crème de Menthe Mint |
| Leaves | The leaves are very small, rounded, and bright green, typically measuring only 3-5 mm in diameter. They have a smooth texture and emit a strong minty fragrance when crushed. |
| Flowers | It rarely flowers indoors. Outdoors, it produces tiny, inconspicuous lilac flowers in summer, but these are not the primary reason for growing the plant. |
Purple Fountain Grass
| Scientific Name | Pennisetum setaceum 'Rubrum' |
|---|---|
| Family | Poaceae |
| Native To | Hybrid cultivar; species native to Africa, Southwest Asia |
| Also Known As | Purple Fountain Grass, Red Fountain Grass |
| Leaves | The leaves are long, narrow, and arching, with a deep burgundy-purple color. They have a fine texture and create a graceful, flowing appearance. |
| Flowers | It produces bottlebrush-like flower plumes that are initially a deep burgundy-purple, fading to a tan color as they mature. Flowering typically occurs in summer and fall. It is unlikely to flower indoors. |
📏 Size & Growth — Plant Comparison
Corsican Mint
Purple Fountain Grass
🌱 Propagation — Comparing Plant Growth
Corsican Mint
Methods: Division, Stem cuttings, Seed
Difficulty: Easy
Tips: Stem cuttings root easily in water or directly in moist soil. Division is best done in spring or fall. For cuttings, take 2-3 inch sections of stem and remove lower leaves before placing in water or soil.
Purple Fountain Grass
Methods: Seed, Division
Difficulty: Moderate
Tips: Divide clumps in spring or early summer. Sow seeds indoors 6-8 weeks before the last frost.
✨ Benefits & Features — Comparing Plant Value
Corsican Mint
Corsican Mint is unique for its incredibly small size and intense minty aroma released when crushed. It is the mint traditionally used in Crème de Menthe liqueur, setting it apart from other mint varieties.
- ✓ Aromatic fragrance enhances sensory experience
- ✓ Provides a visually appealing ground cover
- ✓ Can be used (with caution) to flavor beverages and desserts
- ✓ Attracts pollinators to the garden
- ✓ Relatively easy to propagate and share with friends
- ⚠️ Toxic to pets
Purple Fountain Grass
Its deep purple foliage and graceful, arching habit make it a standout in any garden. The bottlebrush-like flower plumes add further visual interest and movement.
- ✓ Adds visual interest and texture to the garden
- ✓ Attracts birds
- ✓ Drought tolerant
- ✓ Deer resistant
- ✓ Provides movement in the landscape
- 🐾 Pet Safe
📅 Maintenance Schedule — Plant Care Comparison
Corsican Mint
Purple Fountain Grass
🌞 Light Requirements
Corsican Mint
Full sun to partial shade outdoors; Bright indirect light indoors, with some direct sun if possible.
Low light tolerant: ❌ No
Purple Fountain Grass
Full sun (at least 6 hours of direct sunlight per day)
Low light tolerant: ❌ No
💧 Watering Needs
Corsican Mint
Keep the soil consistently moist but not waterlogged. Water when the top inch of soil feels dry. Overwatering can lead to root rot, while underwatering will cause the plant to wilt and dry out. Ensure good drainage.
Purple Fountain Grass
Water deeply when the top inch of soil feels dry to the touch. Avoid overwatering, which can lead to root rot. Signs of underwatering include drooping or browning leaves. Signs of overwatering include yellowing leaves and soggy soil.
🌡️ Temperature & Humidity
Corsican Mint
Temperature: 15-24°C
Humidity: 40-60%
Purple Fountain Grass
Temperature: 18-30°C
Humidity: 20-50%
🤔 Which Plant Is Right For You?
Corsican Mint
Mentha requieniiGardeners looking for a fragrant ground cover or those who enjoy growing herbs, but who are aware of its toxicity to pets.
✅ Choose This Plant If...
- You want a fragrant ground cover that releases a minty aroma when stepped on
- You enjoy growing herbs and using them in culinary applications (with caution due to potential skin irritation)
- You have a rock garden or patio where you want to add a touch of greenery
- You want a plant that is relatively easy to propagate
- You are looking for a plant that can tolerate some foot traffic.
❌ Skip This Plant If...
- You have pets that might ingest it, as it is toxic to them
- You don't have a bright, sunny location to provide adequate light
- You are not prepared to manage its aggressive spreading habit.
Purple Fountain Grass
Pennisetum setaceum 'Rubrum'Gardeners looking for a dramatic ornamental grass to add color and texture to their landscape.
✅ Choose This Plant If...
- You want a striking focal point in your garden.
- You need a drought-tolerant plant for a sunny location.
- You desire a plant with beautiful purple foliage and plumes.
- You want to attract birds to your garden.
- You need a deer-resistant plant.
❌ Skip This Plant If...
- You live in a cold climate and don't want to treat it as an annual.
- You don't have a sunny location.
- You are looking for a low-maintenance indoor plant.
🎯 Quick Verdict
⚡ Key Differences Between These Plants
Corsican Mint is rated Moderate care level, while Purple Fountain Grass is Expert.
Corsican Mint has fast growth, while Purple Fountain Grass grows moderate.
💡 Pro Tips For Comparing These Plants
Corsican Mint Care Tips
Corsican Mint is relatively easy to care for outdoors, but can be more challenging indoors. It requires bright light, consistent moisture, and well-draining soil. Its aggressive spreading habit needs to be managed, especially in garden settings. Indoor plants may require more frequent watering and attention to humidity.
- Provide bright light to prevent leggy growth
- Water consistently, allowing the top inch of soil to dry out between waterings
- Fertilize regularly during the growing season
- Prune regularly to maintain a dense mat
- Monitor for pests and diseases, and treat promptly
Purple Fountain Grass Care Tips
Purple Fountain Grass is primarily an outdoor plant and will struggle indoors due to its high light requirements. It needs full sun and well-draining soil. While it can be grown in containers, it requires regular watering and fertilization. Overwintering indoors is possible in colder climates, but the plant may not thrive.
- Plant in well-draining soil in a sunny location.
- Water deeply but infrequently, allowing the soil to dry out between waterings.
- Fertilize in spring with a balanced slow-release fertilizer.
- Cut back foliage in late fall or early spring.
- Protect from frost in colder climates.
⚠️ Common Problems & Solutions — Plant Care Comparison
Corsican Mint
Purple Fountain Grass
❓ Frequently Asked Questions — Comparing These Plants
Corsican Mint
What are the light requirements for Corsican Mint?
Corsican Mint flourishes in partial shade to full shade. Direct sunlight, especially during the hottest hours of the day, can scorch its delicate leaves. An ideal location would be under the dappled shade of trees or on a north-facing patio. If growing indoors, place it near an east-facing window or a few feet away from a south-facing window to provide bright, indirect light.
How do I care for Corsican Mint?
Corsican Mint thrives in partial shade to full shade, requiring protection from intense direct sunlight, especially during the hottest part of the day. Water regularly, keeping the soil consistently moist but not waterlogged. Proper drainage is crucial to prevent root rot. Use a well-draining soil mix amended with organic matter. Fertilize sparingly with a balanced liquid fertilizer every 4-6 weeks during the growing season (spring and summer).
How do I propagate Corsican Mint?
Corsican Mint is easily propagated through division or stem cuttings. For division, carefully dig up a mature plant and gently separate the root system into smaller clumps. Replant each clump in its own pot or directly into the ground. For stem cuttings, take 2-3 inch cuttings from healthy stems, remove the lower leaves, and place them in water or directly into moist potting mix. Keep the cuttings in a humid environment until roots develop.
Purple Fountain Grass
What are the light requirements for Purple Fountain Grass?
Purple Fountain Grass requires at least 6-8 hours of direct sunlight per day to thrive and develop its characteristic vibrant purple foliage and abundant flower plumes. Insufficient sunlight can lead to leggy growth, faded color, and reduced flowering. When planting, choose a location that receives full sun throughout the day. If growing in containers, rotate the plant regularly to ensure even sun exposure on all sides. In hotter climates, some afternoon shade may be beneficial to prevent scorching, but avoid placing it in deep shade, which will hinder its growth. Supplemental lighting may be necessary if grown indoors during winter months.
How do I care for Purple Fountain Grass?
Purple Fountain Grass thrives in full sun and well-draining soil. Water thoroughly when the top inch of soil feels dry, but avoid overwatering, which can lead to root rot. Fertilize monthly during the growing season (spring and summer) with a balanced fertilizer to promote healthy growth and vibrant blooms. Prune away dead or damaged foliage in late winter or early spring before new growth emerges. In colder climates, treat it as an annual or bring it indoors during the winter. Provide adequate air circulation to prevent fungal diseases. Regularly inspect for pests like aphids or spider mites, and treat accordingly. Avoid planting in overly compacted or poorly draining soil. Mulching around the base can help retain moisture and suppress weeds. Protect from strong winds.
How do I propagate Purple Fountain Grass?
Purple Fountain Grass can be propagated by division. In early spring, carefully dig up the plant and divide the root ball into smaller clumps, ensuring each clump has healthy roots and foliage. Replant the divisions in well-draining soil and water thoroughly. Keep the soil consistently moist until the new plants are established. Division is the most reliable method. Seed propagation is possible but can be inconsistent in producing plants true to the ‘Rubrum’ cultivar. Stem cuttings are not typically used for propagating this grass. Keikis are not applicable as this plant doesn’t produce them. Ensure good air circulation to prevent fungal diseases after dividing.
Last updated: April 24, 2026 — Plant care data reviewed and verified by our editorial team.