Bells of Ireland vs Lysimachia Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Bells of Ireland
Moluccella laevis
Bells of Ireland is an annual flowering plant known for its tall spikes of vibrant green, bell-shaped calyces (modified leaves) that surround tiny, inconspicuous white flowers. It typically grows to a height of 2-3 feet. While it can be grown indoors, it's primarily an outdoor plant, often cultivated in gardens for its unique architectural form and long-lasting cut flowers. People grow it for its ornamental value, particularly in floral arrangements, where its bright green color adds a striking contrast.
Lysimachia
Lysimachia nummularia
Lysimachia nummularia, commonly known as Creeping Jenny or Moneywort, is a perennial ground cover characterized by its trailing stems and rounded, coin-like leaves. It typically grows to only a few inches in height but can spread extensively. While primarily an outdoor plant, it is sometimes grown in hanging baskets or containers indoors. People grow it for its attractive foliage and ability to quickly cover ground, creating a lush, green carpet. Its vibrant green or golden foliage adds visual interest to gardens and landscapes. It is not ideally suited for long-term indoor growth.
Quick Plant Comparison
| Feature | Bells of Ireland | Lysimachia |
|---|---|---|
| Light | Full sun to partial shade outdoors. Indoors, requires very bright, direct light for at least 6 hours daily. | Full sun to partial shade outdoors. Indoors, requires very bright, direct light for several hours daily. |
| Watering | Outdoors: 2-3 times per week, depending on weather. Indoors: Every 5-7 days, depending on light and humidity. | Every 3-7 days, depending on light and temperature. |
| Humidity | 40-60% | 30-50% |
| Temperature | 15-24°C | 15-24°C |
| Care Level | Expert | Expert |
| Growth Rate | Fast | Fast |
| Max Height | Indoors: 0.6-1 meter (2-3 feet). Outdoors: 0.6-1 meter (2-3 feet) | 2-10 cm (indoors) |
| Pet Safety | ✅ Safe | ❌ Toxic To Pets |
| Soil | Well-draining potting mix or garden soil. A mix of potting soil, perlite, and vermiculite is suitable. | Well-draining potting mix or garden soil. |
| Beginner Friendly | ❌ No | ❌ No |
| Weekly Maintenance | 30 minutes weekly | 15 minutes weekly |
🔬 Botanical Information — Comparing These Plants
Bells of Ireland
| Scientific Name | Moluccella laevis |
|---|---|
| Family | Lamiaceae (Mint family) |
| Native To | Western Asia (Turkey, Syria, Caucasus) |
| Also Known As | Bells of Ireland, Molucca Balm, Shellflower |
| Leaves | The leaves are light green, oval to rounded in shape, and have slightly toothed edges. They are arranged oppositely along the stem and are generally inconspicuous compared to the prominent calyces. |
| Flowers | The actual flowers are small, white, and relatively insignificant, hidden within the larger green calyces. Flowering typically occurs in summer. |
Lysimachia
| Scientific Name | Lysimachia nummularia |
|---|---|
| Family | Primulaceae |
| Native To | Europe |
| Also Known As | Creeping Jenny, Moneywort, Twopenny Grass |
| Leaves | Rounded, coin-like leaves that are typically bright green, but some varieties have golden or chartreuse foliage. Leaves are small, usually less than an inch in diameter, and have a smooth texture. |
| Flowers | It may produce small, yellow, cup-shaped flowers in the summer, but flowering is rare indoors. |
📏 Size & Growth — Plant Comparison
Bells of Ireland
Lysimachia
🌱 Propagation — Comparing Plant Growth
Bells of Ireland
Methods: Seed
Difficulty: Moderate
Tips: Sow seeds indoors 6-8 weeks before the last frost or directly outdoors after the last frost. Seeds require light to germinate, so press them gently into the soil surface. Keep the soil consistently moist.
Lysimachia
Methods: Stem cuttings, Division
Difficulty: Easy
Tips: Take stem cuttings and place them in water or directly into moist soil. Keep the soil consistently moist until roots develop. Division can be done by separating rooted sections of the plant.
✨ Benefits & Features — Comparing Plant Value
Bells of Ireland
The most striking feature is the bright green, bell-shaped calyces that surround the tiny white flowers. These calyces persist long after the flowers have faded, providing extended ornamental value. It is not native to Ireland, despite its common name.
- ✓ Adds unique architectural interest to gardens and floral arrangements.
- ✓ Provides a vibrant green color that contrasts well with other flowers.
- ✓ Attracts pollinators like bees and butterflies.
- ✓ Symbolizes luck and good fortune.
- ✓ Can be dried and used in dried flower arrangements.
- 🐾 Pet Safe
Lysimachia
Its trailing growth habit and coin-shaped leaves make it a unique and attractive ground cover. It can tolerate a range of soil conditions and is relatively easy to propagate.
- ✓ Provides ground cover and helps prevent soil erosion.
- ✓ Adds visual interest with its bright green or golden foliage.
- ✓ Can be used in hanging baskets or containers.
- ✓ Relatively easy to propagate.
- ✓ Can tolerate a range of soil conditions.
- ⚠️ Toxic to pets
📅 Maintenance Schedule — Plant Care Comparison
Bells of Ireland
Lysimachia
🌞 Light Requirements
Bells of Ireland
Full sun to partial shade outdoors. Indoors, requires very bright, direct light for at least 6 hours daily.
Low light tolerant: ❌ No
Lysimachia
Full sun to partial shade outdoors. Indoors, requires very bright, direct light for several hours daily.
Low light tolerant: ❌ No
💧 Watering Needs
Bells of Ireland
Outdoors: Water regularly, keeping the soil consistently moist but not waterlogged. Indoors: Water thoroughly when the top inch of soil feels dry. Overwatering can lead to root rot; underwatering will cause wilting and browning of the calyces.
Lysimachia
Water thoroughly when the top inch of soil feels dry. Avoid overwatering, as it can lead to root rot. Signs of underwatering include wilting leaves. Signs of overwatering include yellowing leaves and soggy soil.
🌡️ Temperature & Humidity
Bells of Ireland
Temperature: 15-24°C
Humidity: 40-60%
Lysimachia
Temperature: 15-24°C
Humidity: 30-50%
🤔 Which Plant Is Right For You?
Bells of Ireland
Moluccella laevisExperienced gardeners who want a unique and striking addition to their cut flower arrangements.
✅ Choose This Plant If...
- You want a unique and striking addition to your garden or floral arrangements.
- You enjoy the challenge of growing plants that require specific conditions.
- You are looking for a plant with a strong architectural presence.
- You want to attract pollinators to your garden.
- You need a long-lasting cut flower with a vibrant green color.
❌ Skip This Plant If...
- You have limited sunlight indoors and cannot provide supplemental lighting.
- You are a beginner gardener looking for an easy-to-grow plant.
- You live in a very hot or humid climate, which can increase the risk of fungal diseases.
Lysimachia
Lysimachia nummulariaExperienced gardeners looking for a ground cover for outdoor spaces or those willing to provide very bright light and manage its growth indoors.
✅ Choose This Plant If...
- You want a fast-growing ground cover for your garden.
- You have a very bright, sunny indoor space.
- You enjoy the look of trailing foliage in hanging baskets.
- You want a plant that is relatively easy to propagate.
- You are experienced with managing potentially aggressive plants.
❌ Skip This Plant If...
- You have pets that may ingest the plant.
- You have limited sunlight indoors.
- 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
Bells of Ireland Care Tips
Bells of Ireland are best suited for outdoor gardens. Growing them indoors is challenging due to their high light requirements. Supplemental lighting is almost always necessary. Consistent watering and well-draining soil are crucial to prevent root rot. Requires careful monitoring for pests and diseases.
- Start seeds indoors 6-8 weeks before the last frost for earlier blooms.
- Provide well-draining soil to prevent root rot.
- Water regularly, especially during hot and dry weather.
- Fertilize every 2-4 weeks during the growing season with a balanced liquid fertilizer.
- Pinch back young plants to encourage bushier growth.
Lysimachia Care Tips
Creeping Jenny is relatively easy to care for outdoors, but it can be challenging indoors due to its high light requirements and potential for aggressive growth. It needs very bright light and well-draining soil. Overwatering is a common problem. Regular pruning is needed to control its spread.
- Provide bright, indirect light with some direct sun exposure.
- Water thoroughly when the top inch of soil feels dry, but avoid overwatering.
- Fertilize regularly during the growing season.
- Prune regularly to control its spread and maintain its shape.
- Monitor for pests and treat promptly.
⚠️ Common Problems & Solutions — Plant Care Comparison
Bells of Ireland
Lysimachia
❓ Frequently Asked Questions — Comparing These Plants
Bells of Ireland
What are the light requirements for Bells of Ireland?
Bells of Ireland crave sunlight. They need at least 6-8 hours of direct sunlight each day to produce vibrant green calyces and strong stems. Insufficient light can lead to leggy growth, pale coloring, and reduced blooming. When grown indoors, place them near a south-facing window where they can receive ample sunlight. If natural light is limited, supplement with grow lights. Rotate the plants regularly to ensure even light exposure on all sides. When starting seeds indoors, use grow lights to ensure healthy seedling development.
How do I care for Bells of Ireland?
Bells of Ireland require full sun, at least 6-8 hours daily, to thrive. Plant them in well-draining soil with a slightly acidic to neutral pH (6.0-7.0). Water regularly, keeping the soil consistently moist but not waterlogged, especially during hot weather. Fertilize every 2-3 weeks with a balanced liquid fertilizer during the growing season (spring and summer).
How do I propagate Bells of Ireland?
Bells of Ireland are typically propagated by seed.
Lysimachia
What are the light requirements for Lysimachia?
Lysimachia prefers partial to full sunlight, though the specific light needs vary depending on the species. Generally, plants need at least 4-6 hours of direct sunlight per day to thrive and produce abundant blooms. In hotter climates, providing some afternoon shade can prevent leaf scorch. Insufficient light can result in leggy growth, reduced flowering, and pale foliage.
How do I care for Lysimachia?
Lysimachia thrives in moist, well-draining soil. Water regularly, especially during dry periods, but avoid overwatering to prevent root rot. Plant in a location that receives partial to full sunlight, depending on the specific species. Fertilize monthly during the growing season (spring and summer) with a balanced liquid fertilizer to encourage blooming. Prune regularly to maintain shape and remove any dead or damaged foliage.
How do I propagate Lysimachia?
Lysimachia can be propagated easily through division, stem cuttings, and, in some species, keikis.
Last updated: May 14, 2026 — Plant care data reviewed and verified by our editorial team.