Lobelia Cardinalis vs Love-Lies-Bleeding Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Lobelia Cardinalis
Lobelia cardinalis
Lobelia cardinalis, the Cardinal flower, is a striking herbaceous perennial native to North America. It features vibrant red, tubular flowers arranged on tall spikes, reaching heights of 2-4 feet. The plant has lance-shaped, green leaves that provide a lush backdrop to the brilliant blooms. It thrives in moist, well-drained soil and prefers partial shade to full sun. Cardinal flowers are primarily grown for their showy flowers, which attract hummingbirds and butterflies, making them a popular choice for gardens and naturalized areas. While it can be grown in containers, it is primarily an outdoor plant and may struggle indoors.
Love-Lies-Bleeding
Amaranthus caudatus
Love-Lies-Bleeding is an annual flowering plant known for its dramatic, cascading flower spikes. It typically grows to a height of 3-8 feet outdoors. The flowers are small and densely packed along the long, rope-like inflorescences, usually in shades of deep red, but also available in green or gold. While it can be started indoors, it is primarily an outdoor plant grown for its ornamental value in gardens and cut flower arrangements. People grow it for its unique appearance and the visual interest it adds to landscapes.
Quick Plant Comparison
| Feature | Lobelia Cardinalis | Love-Lies-Bleeding |
|---|---|---|
| Light | Partial shade to full sun (at least 6 hours of direct sunlight) | Full sun (at least 6 hours of direct sunlight per day) |
| Watering | Every 2-3 days, depending on weather and soil drainage | Every 2-3 days in hot weather, every 5-7 days in cooler weather (outdoors) |
| Humidity | 40-60% | 30-50% |
| Temperature | 15-25°C | 18-27°C |
| Care Level | Expert | Expert |
| Growth Rate | Moderate | Fast |
| Max Height | 0.6-1.2 meters (2-4 feet) | 1-2 feet (indoors, unlikely to thrive), 3-8 feet (outdoors) |
| Pet Safety | ❌ Toxic To Pets | ❌ Toxic To Pets |
| Soil | Rich, well-drained soil with plenty of organic matter | Well-draining soil, such as a mix of garden soil, compost, and perlite. |
| Beginner Friendly | ❌ No | ❌ No |
| Weekly Maintenance | 15 minutes weekly | 15 minutes weekly (outdoors) |
🔬 Botanical Information — Comparing These Plants
Lobelia Cardinalis
| Scientific Name | Lobelia cardinalis |
|---|---|
| Family | Campanulaceae |
| Native To | North America |
| Also Known As | Cardinal flower, Red lobelia |
| Leaves | Lance-shaped, medium green leaves with serrated edges. Leaves are typically 7-15 cm long and arranged alternately along the stem. |
| Flowers | Flowers are bright red, tubular, and arranged in a spike-like raceme. They bloom from mid-summer to early fall. It is highly unlikely to flower indoors due to light requirements. |
Love-Lies-Bleeding
| Scientific Name | Amaranthus caudatus |
|---|---|
| Family | Amaranthaceae |
| Native To | South America (likely Peru) |
| Also Known As | Tassel Flower, Quilete, Incan Wheat |
| Leaves | The leaves are ovate to lance-shaped, typically green, and can grow up to 6 inches long. They are arranged alternately along the stems. |
| Flowers | The flowers are small and densely packed along the long, rope-like inflorescences. They are typically deep red, but can also be green or gold. Flowering occurs primarily in summer and fall. |
📏 Size & Growth — Plant Comparison
Lobelia Cardinalis
Love-Lies-Bleeding
🌱 Propagation — Comparing Plant Growth
Lobelia Cardinalis
Methods: Seed, Division, Stem cuttings
Difficulty: Moderate
Tips: For seeds, cold stratify for 30 days before sowing. Divide clumps in spring or fall. Take stem cuttings in late spring and root in moist soil.
Love-Lies-Bleeding
Methods: Seed
Difficulty: Easy
Tips: Sow seeds directly into the garden in spring after the last frost, or start indoors 6-8 weeks before the last frost. Keep soil moist until germination.
✨ Benefits & Features — Comparing Plant Value
Lobelia Cardinalis
The vibrant red color and tubular shape of the flowers are specifically adapted to attract hummingbirds. It is a native plant that supports local ecosystems and provides habitat for wildlife.
- ✓ Attracts pollinators (hummingbirds, butterflies)
- ✓ Adds vibrant color to the garden
- ✓ Provides habitat for wildlife
- ✓ Native plant supports local ecosystems
- ✓ Can be used in cut flower arrangements
- ⚠️ Toxic to pets
Love-Lies-Bleeding
The cascading flower spikes are its most distinctive feature, setting it apart from many other flowering plants. The vibrant red color (in most varieties) adds a dramatic touch to any garden.
- ✓ Attracts pollinators to the garden
- ✓ Provides unique visual interest
- ✓ Can be used as a cut flower
- ✓ Seeds are edible
- ✓ Relatively easy to grow from seed outdoors
- ⚠️ Toxic to pets
📅 Maintenance Schedule — Plant Care Comparison
Lobelia Cardinalis
Love-Lies-Bleeding
🌞 Light Requirements
Lobelia Cardinalis
Partial shade to full sun (at least 6 hours of direct sunlight)
Low light tolerant: ❌ No
Love-Lies-Bleeding
Full sun (at least 6 hours of direct sunlight per day)
Low light tolerant: ❌ No
💧 Watering Needs
Lobelia Cardinalis
Keep the soil consistently moist, especially during hot weather. Water deeply when the top inch of soil feels dry. Overwatering can lead to root rot, indicated by yellowing leaves and a musty smell. Underwatering results in wilting and dry, crispy leaves.
Love-Lies-Bleeding
Water deeply when the top inch of soil feels dry. Avoid overwatering, as this can lead to root rot. Ensure good drainage.
🌡️ Temperature & Humidity
Lobelia Cardinalis
Temperature: 15-25°C
Humidity: 40-60%
Love-Lies-Bleeding
Temperature: 18-27°C
Humidity: 30-50%
🤔 Which Plant Is Right For You?
Lobelia Cardinalis
Lobelia cardinalisGardeners looking to attract hummingbirds and butterflies to their moist, partially shaded gardens.
✅ Choose This Plant If...
- You want to attract hummingbirds to your garden.
- You have a moist, partially shaded area in your yard.
- You appreciate vibrant red flowers.
- You enjoy native North American plants.
- You want a plant that adds vertical interest to your garden.
❌ Skip This Plant If...
- You have pets that might ingest the plant.
- You have a dry garden.
- You are looking for a low-maintenance indoor plant.
Love-Lies-Bleeding
Amaranthus caudatusGardeners looking to add a unique and dramatic visual element to their outdoor landscape.
✅ Choose This Plant If...
- You want a dramatic and unique plant for your garden
- You need a plant that attracts pollinators
- You want to grow your own cut flowers
- You want to add height and texture to your landscape
- You are looking for a plant that is easy to propagate from seed.
❌ Skip This Plant If...
- You have pets that might ingest the plant
- You don't have a sunny outdoor space
- You are looking for a low-maintenance indoor plant.
🎯 Quick Verdict
⚡ Key Differences Between These Plants
Lobelia Cardinalis needs partial shade to full sun (at least 6 hours of direct sunlight), while Love-Lies-Bleeding prefers full sun (at least 6 hours of direct sunlight per day).
Lobelia Cardinalis has moderate growth, while Love-Lies-Bleeding grows fast.
💡 Pro Tips For Comparing These Plants
Lobelia Cardinalis Care Tips
Lobelia cardinalis is primarily an outdoor plant that requires consistent moisture and partial to full sun. Indoor cultivation is challenging due to the need for high light levels and humidity. It is prone to root rot if overwatered and requires regular fertilization during the growing season. It is also toxic to pets.
- Provide consistent moisture, especially during hot weather.
- Deadhead spent flowers to encourage more blooms.
- Divide clumps every few years to prevent overcrowding.
- Protect from slugs and snails.
- Mulch around the base of the plant to retain moisture and suppress weeds.
Love-Lies-Bleeding Care Tips
Love-Lies-Bleeding is primarily an outdoor plant that requires full sun and well-draining soil. It is unlikely to thrive indoors due to its high light requirements. Indoor cultivation would require very bright supplemental lighting and careful monitoring of watering to prevent root rot. It is also toxic to pets.
- Start seeds indoors 6-8 weeks before the last frost for a head start
- Provide full sun for optimal growth and flowering
- Ensure well-draining soil to prevent root rot
- Deadhead spent flowers to encourage more blooms
- Monitor for pests and treat promptly.
⚠️ Common Problems & Solutions — Plant Care Comparison
Lobelia Cardinalis
Love-Lies-Bleeding
❓ Frequently Asked Questions — Comparing These Plants
Lobelia Cardinalis
What are the light requirements for Lobelia Cardinalis?
Lobelia Cardinalis prefers bright, indirect light. While it can tolerate some morning sun, intense afternoon sun can scorch the leaves, especially in hotter climates. When grown indoors, place the plant near an east-facing or west-facing window where it will receive ample light without direct exposure. If you don’t have access to natural light, consider using a grow light to supplement its needs. Insufficient light can lead to leggy growth and reduced flowering. Rotate the plant regularly to ensure even light exposure on all sides. Watch for signs of overexposure, such as bleached or burned leaves, and adjust the plant’s location accordingly.
How do I care for Lobelia Cardinalis?
Lobelia Cardinalis thrives in consistently moist soil, ideally rich in organic matter. Water regularly, especially during dry periods, ensuring the soil doesn’t dry out completely. Provide bright, indirect light; direct sunlight can scorch the leaves. Fertilize every 2-4 weeks during the growing season (spring and summer) with a balanced liquid fertilizer, diluted to half strength. Deadhead spent flowers to encourage continued blooming. Maintain a humid environment, especially if growing indoors; consider using a humidifier or placing the plant on a pebble tray filled with water. Protect from frost in colder climates, either by bringing it indoors or providing adequate winter protection. Repot in spring if the plant becomes root-bound. Monitor for pests such as aphids and spider mites, and treat promptly if necessary. Propagate by seed, division, or stem cuttings.
How do I propagate Lobelia Cardinalis?
Lobelia Cardinalis can be propagated by division, stem cuttings, or seeds. For division, carefully separate the plant into smaller clumps in early spring, ensuring each clump has roots and foliage. Replant the divisions in moist, well-draining soil. For stem cuttings, take 4-6 inch cuttings from healthy stems in spring or summer. Remove the lower leaves and place the cuttings in water or moist potting mix until roots develop. Once rooted, transplant into pots. Seeds can be sown indoors in early spring or directly outdoors after the last frost. Keep the soil consistently moist until germination.
Love-Lies-Bleeding
What are the light requirements for Love-Lies-Bleeding?
Love-Lies-Bleeding requires a significant amount of sunlight to thrive and produce its characteristic vibrant blooms. Aim for at least 6-8 hours of direct sunlight per day. In indoor environments, place the plant near a south-facing window to maximize light exposure. If natural light is insufficient, consider supplementing with grow lights, particularly during the shorter days of winter.
How do I care for Love-Lies-Bleeding?
Love-Lies-Bleeding thrives in well-draining soil and requires regular watering, especially during hot weather. Aim to keep the soil consistently moist but not waterlogged. Fertilize every 2-4 weeks during the growing season (spring and summer) with a balanced liquid fertilizer to encourage abundant blooming. Deadhead spent flowers to promote continuous flowering.
How do I propagate Love-Lies-Bleeding?
Love-Lies-Bleeding can be propagated easily from seeds. Collect seeds from dried flower heads and sow them directly into well-draining soil in spring. Keep the soil consistently moist and provide ample sunlight. Alternatively, stem cuttings can be taken in late spring or early summer. Take a 4-6 inch cutting, remove the lower leaves, and place it in water or moist potting mix until roots develop. Division is not a common method for this plant. Keiki propagation does not apply to this species.
Last updated: May 10, 2026 — Plant care data reviewed and verified by our editorial team.