Cinquefoil vs Purple Fountain Grass Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Cinquefoil
Potentilla spp.
Cinquefoil is a diverse genus of herbaceous perennial plants and shrubs. The name 'cinquefoil' means 'five-leaved,' referring to the palmate arrangement of leaflets in many species. Plants typically feature basal rosettes of leaves and flowering stems that bear clusters of small, five-petaled flowers in shades of yellow, white, pink, or red. Cinquefoils are primarily outdoor plants, valued for their drought tolerance and ability to attract pollinators. They are grown in gardens for their attractive foliage and long blooming period. Attempting to grow them indoors is challenging due to their high light requirements and need for a distinct dormancy period.
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 | Cinquefoil | Purple Fountain Grass |
|---|---|---|
| Light | Full sun to partial shade. Requires at least 6 hours of direct sunlight daily for optimal flowering. | Full sun (at least 6 hours of direct sunlight per day) |
| Watering | Every 7-10 days outdoors, depending on weather conditions. | Every 7-10 days, depending on weather and soil drainage |
| Humidity | 30-50% | 20-50% |
| Temperature | 15-25°C | 18-30°C |
| Care Level | Expert | Expert |
| Growth Rate | Moderate | Moderate |
| Max Height | 0.15-1 meter outdoors (difficult to predict indoors) | Outdoor: 0.6-1.5 meters. Indoor (unlikely to thrive): 0.3-0.6 meters |
| Pet Safety | ❌ Toxic To Pets | ✅ Safe |
| Soil | Well-draining soil. A mix of garden soil, sand, and compost is suitable. | Well-draining soil, such as a sandy loam or a potting mix amended with perlite |
| Beginner Friendly | ❌ No | ❌ No |
| Weekly Maintenance | 10 minutes weekly (outdoors) | 15 minutes weekly |
🔬 Botanical Information — Comparing These Plants
Cinquefoil
| Scientific Name | Potentilla spp. |
|---|---|
| Family | Rosaceae |
| Native To | Widespread across the Northern Hemisphere, including North America, Europe, and Asia. |
| Also Known As | Cinquefoil, Five-finger, Barren Strawberry |
| Leaves | The leaves of cinquefoil are typically palmate, meaning they are divided into five (or sometimes three or seven) leaflets that radiate from a central point. The leaflets can be smooth or hairy, and the leaf color ranges from green to grayish-green. Leaf size varies depending on the species. |
| Flowers | Cinquefoil flowers outdoors in spring and summer. The flowers are typically small, with five petals, and come in shades of yellow, white, pink, or red. Indoor flowering is unlikely due to the plant's high light requirements and need for a dormancy period. |
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
Cinquefoil
Purple Fountain Grass
🌱 Propagation — Comparing Plant Growth
Cinquefoil
Methods: Seed, Division, Stem cuttings (for some shrubby species)
Difficulty: Easy
Tips: Divide established plants in spring or fall. Take stem cuttings from shrubby species in summer and root them in moist soil. Sow seeds in spring after a period of cold stratification.
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
Cinquefoil
Cinquefoil is known for its five-petaled flowers and palmate leaves. Its drought tolerance and ability to attract pollinators make it a valuable addition to gardens. The plant's adaptability to various soil types also contributes to its popularity.
- ✓ Attracts pollinators
- ✓ Drought tolerant
- ✓ Long blooming period
- ✓ Adds color and texture to the garden
- ✓ Low maintenance
- ⚠️ 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
Cinquefoil
Purple Fountain Grass
🌞 Light Requirements
Cinquefoil
Full sun to partial shade. Requires at least 6 hours of direct sunlight daily for optimal flowering.
Low light tolerant: ❌ No
Purple Fountain Grass
Full sun (at least 6 hours of direct sunlight per day)
Low light tolerant: ❌ No
💧 Watering Needs
Cinquefoil
Water deeply when the top inch of soil feels dry. Avoid overwatering, which can lead to root rot. Allow the soil to dry slightly between waterings. Signs of underwatering include wilting leaves; overwatering includes yellowing leaves and soggy soil.
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
Cinquefoil
Temperature: 15-25°C
Humidity: 30-50%
Purple Fountain Grass
Temperature: 18-30°C
Humidity: 20-50%
🤔 Which Plant Is Right For You?
Cinquefoil
Potentilla spp.Gardeners looking for a low-maintenance, drought-tolerant flowering plant for sunny locations.
✅ Choose This Plant If...
- You have a sunny garden and want a low-maintenance flowering plant.
- You want to attract pollinators to your garden.
- You need a drought-tolerant plant for a dry climate.
- You appreciate a long blooming period.
- You want a plant with attractive foliage and flowers.
❌ Skip This Plant If...
- You only have indoor space with low light.
- You are looking for a low-maintenance indoor plant.
- You have pets that might ingest toxic plants.
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
Both plants have similar basic care requirements but differ in appearance and specific needs. Compare plants carefully to find the best fit for your space.
💡 Pro Tips For Comparing These Plants
Cinquefoil Care Tips
Cinquefoil is primarily an outdoor plant and is challenging to grow indoors. It requires very bright light, well-draining soil, and a cool dormancy period in winter. Indoor cultivation is not recommended due to the difficulty in replicating its natural environment. Expect limited success indoors.
- Plant in well-draining soil to prevent root rot.
- Provide at least 6 hours of direct sunlight daily.
- Water deeply but infrequently, allowing the soil to dry slightly between waterings.
- Fertilize in spring with a balanced slow-release fertilizer.
- Prune lightly after flowering to maintain shape.
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
Cinquefoil
Purple Fountain Grass
❓ Frequently Asked Questions — Comparing These Plants
Cinquefoil
What are the light requirements for Cinquefoil?
Cinquefoil thrives in full sun, requiring at least six hours of direct sunlight per day for optimal blooming. However, in hotter climates, it can benefit from some afternoon shade to prevent leaf scorch. Insufficient sunlight can result in leggy growth, reduced flowering, and faded flower colors.
How do I care for Cinquefoil?
Cinquefoil thrives in well-drained soil and prefers full sun to partial shade. Water regularly, especially during dry spells, but avoid overwatering, which can lead to root rot. Fertilize in spring with a balanced, slow-release fertilizer to promote healthy growth and abundant blooms. Deadhead spent flowers to encourage continuous blooming throughout the summer.
How do I propagate Cinquefoil?
Cinquefoil can be easily propagated through division or stem cuttings. For division, carefully dig up a mature plant in early spring or fall and divide the root ball into smaller sections, ensuring each section has healthy roots and foliage. Replant the divisions in well-drained soil.
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: May 15, 2026 — Plant care data reviewed and verified by our editorial team.