Astilbe vs Canna Lily Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Astilbe
Astilbe spp.
Astilbe is a genus of herbaceous perennial plants known for their feathery plumes of flowers and attractive, fern-like foliage. Typically grown outdoors in shade or partial shade gardens, they add texture and color with their blooms in shades of pink, red, purple, and white. Astilbes are rhizomatous, meaning they spread horizontally underground. They are valued for their ability to thrive in moist, shady conditions where other flowering plants may struggle. They are not typically grown indoors due to their need for specific temperature and humidity conditions.
Canna Lily
Canna indica
Canna indica, commonly known as Canna lily, is a rhizomatous perennial with large, paddle-shaped leaves and showy flowers. It's primarily grown outdoors for its tropical appearance and vibrant blooms, which come in various colors like red, orange, yellow, and pink. The plant grows from rhizomes, spreading readily in suitable conditions. While it can be grown indoors, it requires very bright light and ample space to thrive, making it more challenging than typical houseplants. People grow them for their bold foliage and exotic-looking flowers.
Quick Plant Comparison
| Feature | Astilbe | Canna Lily |
|---|---|---|
| Light | Partial shade to full shade. Requires protection from intense direct sunlight. | Full sun to partial shade. Requires at least 6 hours of direct sunlight daily for optimal flowering. |
| Watering | Every 2-3 days, depending on weather and soil drainage | Every 2-5 days during growing season, less frequently in winter |
| Humidity | 40-70% | 40-60% |
| Temperature | 16-21°C | 18-27°C |
| Care Level | Expert | Expert |
| Growth Rate | Moderate | Fast |
| Max Height | Not typically grown indoors, but if attempted, expect 30-60 cm | 0.6-1.5 meters (indoors, typically smaller) |
| Pet Safety | ❌ Toxic To Pets | ❌ Toxic To Pets |
| Soil | Rich, well-draining soil with plenty of organic matter. A mix of peat moss, compost, and perlite is suitable. | Well-draining, fertile soil rich in organic matter. A mix of potting soil, compost, and perlite is suitable. |
| Beginner Friendly | ❌ No | ❌ No |
| Weekly Maintenance | 15 minutes weekly | 30 minutes weekly |
🔬 Botanical Information — Comparing These Plants
Astilbe
| Scientific Name | Astilbe spp. |
|---|---|
| Family | Saxifragaceae |
| Native To | Asia and North America |
| Also Known As | False Spirea, False Goat's Beard |
| Leaves | The leaves are compound, fern-like, and deeply divided. They are typically dark green, but some varieties have bronze or reddish hues. The texture is delicate and airy. |
| Flowers | Astilbe is rarely, if ever, induced to flower indoors. Outdoors, it produces showy plumes of tiny flowers in shades of pink, red, purple, and white. The flowers bloom in summer and last for several weeks. |
Canna Lily
| Scientific Name | Canna indica |
|---|---|
| Family | Cannaceae |
| Native To | South America |
| Also Known As | Canna lily, Indian shot, Achira, Queensland arrowroot |
| Leaves | Large, paddle-shaped leaves, typically 30-60 cm long and 10-20 cm wide. The leaves are usually green, but some cultivars have bronze or variegated foliage. The texture is smooth and slightly waxy. |
| Flowers | Canna lilies rarely flower indoors due to insufficient light. Outdoors, they produce showy, asymmetrical flowers in shades of red, orange, yellow, pink, or bi-color combinations. The flowers are borne on tall stalks above the foliage. |
📏 Size & Growth — Plant Comparison
Astilbe
Canna Lily
🌱 Propagation — Comparing Plant Growth
Astilbe
Methods: Division, Seed
Difficulty: Moderate
Tips: Divide rhizomes in early spring or fall. Sow seeds in a cold frame in the fall.
Canna Lily
Methods: Rhizome division, Seed
Difficulty: Easy
Tips: Divide rhizomes in early spring before new growth begins. Ensure each division has at least one eye (bud). Plant divisions in well-draining soil and keep moist until established. Seeds require scarification and soaking before planting.
✨ Benefits & Features — Comparing Plant Value
Astilbe
Astilbe's feathery flower plumes and fern-like foliage provide a unique texture and visual appeal in shady gardens. Its ability to thrive in moist, shady conditions makes it a valuable addition to areas where other flowering plants may struggle. The variety of flower colors allows for diverse garden designs.
- ✓ Adds color and texture to shady gardens.
- ✓ Attracts pollinators like bees and butterflies.
- ✓ Deer-resistant.
- ✓ Relatively low-maintenance once established.
- ✓ Provides long-lasting blooms.
- ⚠️ Toxic to pets
Canna Lily
Canna lilies are known for their bold, tropical foliage and vibrant, showy flowers, making them a standout in any garden. Their rhizomatous growth habit allows them to spread readily, creating a lush, dense display. The seeds are unusually hard and were historically used as beads.
- ✓ Adds a tropical flair to your garden or outdoor space.
- ✓ Provides vibrant, colorful blooms that attract pollinators.
- ✓ Offers a bold statement with its large, paddle-shaped leaves.
- ✓ Can be used as a privacy screen or backdrop in landscaping.
- ✓ Provides a sense of accomplishment for experienced gardeners who can successfully cultivate it.
- ⚠️ Toxic to pets
📅 Maintenance Schedule — Plant Care Comparison
Astilbe
Canna Lily
🌞 Light Requirements
Astilbe
Partial shade to full shade. Requires protection from intense direct sunlight.
Low light tolerant: ❌ No
Canna Lily
Full sun to partial shade. Requires at least 6 hours of direct sunlight daily for optimal flowering.
Low light tolerant: ❌ No
💧 Watering Needs
Astilbe
Keep soil consistently moist, especially during hot weather. Avoid letting the soil dry out completely. Overwatering can lead to root rot, so ensure good drainage. Signs of underwatering include wilting leaves and dry soil. Signs of overwatering include yellowing leaves and soggy soil.
Canna Lily
Water deeply when the top inch of soil feels dry. Avoid overwatering, which can lead to rhizome rot. During the growing season, water more frequently. Reduce watering in the winter when the plant is dormant. Signs of overwatering include yellowing leaves and mushy rhizomes. Underwatering can cause wilting and browning leaf tips.
🌡️ Temperature & Humidity
Astilbe
Temperature: 16-21°C
Humidity: 40-70%
Canna Lily
Temperature: 18-27°C
Humidity: 40-60%
🤔 Which Plant Is Right For You?
Astilbe
Astilbe spp.Gardeners with shady, moist areas looking for colorful, low-maintenance perennials.
✅ Choose This Plant If...
- You have a shady garden area that needs color.
- You want a low-maintenance perennial that returns year after year.
- You appreciate plants with interesting foliage and textures.
- You want to attract pollinators to your garden.
- You live in a region with cool, moist summers.
❌ Skip This Plant If...
- You have a sunny, dry garden.
- You are looking for a plant that thrives indoors.
- You have pets that may ingest toxic plants.
Canna Lily
Canna indicaExperienced gardeners who want a bold, tropical plant and can provide ample sunlight and space.
✅ Choose This Plant If...
- You want a bold, tropical statement plant for your sunny outdoor space.
- You appreciate vibrant, showy flowers in shades of red, orange, and yellow.
- You have experience with rhizomatous plants and understand their growth habits.
- You can provide at least 6 hours of direct sunlight daily.
- You are prepared to overwinter the rhizomes indoors in colder climates.
❌ Skip This Plant If...
- You have pets that might ingest the plant, as it is toxic.
- You lack a very sunny location, as it needs at least 6 hours of direct sun.
- You prefer low-maintenance houseplants that don't require frequent attention.
🎯 Quick Verdict
⚡ Key Differences Between These Plants
Astilbe has moderate growth, while Canna Lily grows fast.
💡 Pro Tips For Comparing These Plants
Astilbe Care Tips
Astilbe is primarily an outdoor plant and requires specific conditions to thrive. Indoor cultivation is challenging due to the need for consistent moisture, high humidity, and cool temperatures. It is difficult to replicate these conditions indoors, making it an expert-level plant for indoor growing.
- Plant in well-draining soil amended with organic matter.
- Water regularly, especially during dry periods.
- Apply a layer of mulch to help retain moisture and suppress weeds.
- Divide plants every few years to prevent overcrowding.
- Protect from intense afternoon sun to prevent leaf scorch.
Canna Lily Care Tips
Canna lilies are primarily outdoor plants that require full sun and ample moisture. Growing them indoors is challenging due to their high light requirements and potential for aggressive rhizome spread. They need large pots and frequent fertilization to thrive indoors. Expect less flowering indoors.
- Provide ample sunlight – at least 6 hours of direct sun is crucial for flowering.
- Water deeply and regularly during the growing season, but avoid soggy soil.
- Fertilize every 2-4 weeks with a balanced liquid fertilizer to promote healthy growth and flowering.
- Protect from strong winds, which can damage the large leaves.
- Overwinter rhizomes indoors in colder climates by storing them in a cool, dry place.
⚠️ Common Problems & Solutions — Plant Care Comparison
Astilbe
Canna Lily
❓ Frequently Asked Questions — Comparing These Plants
Astilbe
What are the light requirements for Astilbe?
Astilbes prefer partial to full shade, requiring at least 4 hours of filtered sunlight per day. Avoid direct sunlight, especially during the hottest part of the day, as it can scorch the leaves. In hotter climates, provide more shade to prevent stress. Morning sun is generally well-tolerated, but afternoon sun can be too intense.
How do I care for Astilbe?
Astilbes thrive in partial to full shade and require moist, well-drained soil. Water regularly, especially during dry periods, to keep the soil consistently moist but not waterlogged. Apply a balanced fertilizer in early spring to promote healthy growth and abundant blooms. Deadhead spent flowers to encourage reblooming and maintain a tidy appearance. Mulch around the base of the plant to retain moisture and suppress weeds.
How do I propagate Astilbe?
Astilbes are typically propagated by division in early spring or fall. Carefully dig up the plant and divide the root clump into smaller sections, ensuring each section has healthy roots and foliage. Replant the divisions in well-drained soil, spacing them appropriately. Water thoroughly after planting.
Canna Lily
What are the light requirements for Canna Lily?
Canna Lilies need at least 6 hours of direct sunlight daily to thrive and produce abundant blooms. Insufficient light can lead to leggy growth and reduced flowering. Place outdoor Cannas in a location that receives full sun throughout the day.
How do I care for Canna Lily?
Canna Lilies thrive in full sun and well-draining soil. Water deeply when the top inch of soil feels dry, ensuring good drainage to prevent root rot. Fertilize regularly during the growing season with a balanced fertilizer, switching to a bloom-boosting formula as flowering begins.
How do I propagate Canna Lily?
Canna Lilies are easily propagated by rhizome division. In early spring, carefully dig up the rhizomes and divide them into sections, ensuring each section has at least one growth eye. Plant the divisions in well-draining soil, about 4-6 inches deep. Water thoroughly and keep the soil consistently moist until new growth appears.
Last updated: May 16, 2026 — Plant care data reviewed and verified by our editorial team.