Montbretia vs Princess Tree Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Montbretia
Crocosmia × crocosmiiflora
Montbretia (Crocosmia × crocosmiiflora) is a cormous perennial plant known for its vibrant, arching sprays of orange, red, and yellow flowers. It typically grows to a height of 60-90 cm (2-3 feet). It is primarily an outdoor plant, valued for its summer blooms and ability to attract hummingbirds and butterflies. While it can be grown in containers, it's not ideally suited for indoor environments due to its high light requirements and potential for aggressive spread via corms.
Princess Tree
Paulownia tomentosa
Paulownia tomentosa, the Princess Tree, is a deciduous tree known for its rapid growth and large, heart-shaped leaves. It can reach heights of 30-60 feet. In spring, it produces fragrant, pale purple flowers in panicles before the leaves emerge. These are followed by persistent seed capsules. While admired for its ornamental value, it's considered invasive in many regions due to its prolific seed production and ability to resprout from roots. It is primarily an outdoor tree and not suitable for indoor cultivation.
Quick Plant Comparison
| Feature | Montbretia | Princess Tree |
|---|---|---|
| Light | Full sun to partial shade outdoors. Requires at least 6 hours of direct sunlight for optimal flowering. | Full sun |
| Watering | 2-3 times per week during the growing season, less frequently during dormancy. | Once or twice a week during the growing season, less frequently during dormancy. |
| Humidity | 40-60% | 30-50% |
| Temperature | 15-25°C | 15-27°C |
| Care Level | Expert | Expert |
| Growth Rate | Fast, Aggressive Spreader Via Corms. | Fast |
| Max Height | 60-90 cm (2-3 feet) | Not applicable - unsuitable for indoor growing. Outdoors: 9-18 meters |
| Pet Safety | ❌ Toxic To Pets | ❌ Toxic To Pets |
| Soil | Well-draining soil, such as a mix of loam, sand, and compost. | Well-draining soil, adaptable to various soil types including clay, loam, and sand. |
| Beginner Friendly | ❌ No | ❌ No |
| Weekly Maintenance | 15 minutes weekly during growing season. | 1-2 hours per month, primarily for pruning and managing spread. |
🔬 Botanical Information — Comparing These Plants
Montbretia
| Scientific Name | Crocosmia × crocosmiiflora |
|---|---|
| Family | Iridaceae |
| Native To | Hybrid origin (Crocosmia aurea × Crocosmia pottsii), South Africa |
| Also Known As | Montbretia, Coppertips, Falling Stars |
| Leaves | The leaves are sword-shaped, upright, and mid-green, growing from the base of the plant. They are typically 30-60 cm long and 1-2 cm wide. |
| Flowers | Flowers bloom in summer, producing vibrant orange, red, or yellow trumpet-shaped flowers arranged in arching sprays. Rarely flowers indoors. |
Princess Tree
| Scientific Name | Paulownia tomentosa |
|---|---|
| Family | Paulowniaceae |
| Native To | Central and Western China |
| Also Known As | Princess Tree, Empress Tree, Foxglove Tree |
| Leaves | The leaves are large, heart-shaped (cordate), and can reach up to 12 inches in length. They are typically a medium green color and have a slightly fuzzy texture when young. |
| Flowers | It rarely, if ever, flowers indoors. Outdoors, it produces large panicles of fragrant, pale purple flowers in spring before the leaves emerge. |
📏 Size & Growth — Plant Comparison
Montbretia
Princess Tree
🌱 Propagation — Comparing Plant Growth
Montbretia
Methods: Division of corms, Seed
Difficulty: Easy
Tips: Divide corms in spring or fall. Sow seeds in spring after a period of cold stratification.
Princess Tree
Methods: Seeds, root cuttings, stem cuttings
Difficulty: Moderate
Tips: For seeds, cold stratify for several weeks before sowing. Root cuttings should be taken in late winter. Stem cuttings can be taken in summer.
✨ Benefits & Features — Comparing Plant Value
Montbretia
Montbretia's vibrant, arching flower sprays and ability to attract hummingbirds make it a standout in the garden. Its aggressive spreading habit, while a potential drawback, also allows it to quickly fill in garden spaces.
- ✓ Attracts pollinators
- ✓ Adds vibrant color to the garden
- ✓ Relatively low-maintenance once established
- ✓ Provides long-lasting summer blooms
- ✓ Can be used in cut flower arrangements
- ⚠️ Toxic to pets
Princess Tree
Its rapid growth rate and large leaves distinguish it from many other trees. The fragrant spring flowers are also a notable feature. However, its invasive nature is a significant consideration.
- ✓ Provides shade in large outdoor spaces.
- ✓ Offers fragrant spring flowers.
- ✓ Attracts pollinators.
- ✓ Provides habitat for wildlife.
- ✓ Can be used for erosion control on slopes.
- ⚠️ Toxic to pets
📅 Maintenance Schedule — Plant Care Comparison
Montbretia
Princess Tree
🌞 Light Requirements
Montbretia
Full sun to partial shade outdoors. Requires at least 6 hours of direct sunlight for optimal flowering.
Low light tolerant: ❌ No
Princess Tree
Full sun
Low light tolerant: ❌ No
💧 Watering Needs
Montbretia
Water regularly during the growing season, keeping the soil consistently moist but not waterlogged. Reduce watering after flowering and during dormancy. Overwatering can lead to corm rot, while underwatering can cause stunted growth and reduced flowering.
Princess Tree
Water deeply when the topsoil feels dry to the touch, especially during the growing season. Avoid overwatering, which can lead to root rot. Reduce watering in the dormant season. Signs of underwatering include wilting leaves; overwatering includes yellowing leaves and soggy soil.
🌡️ Temperature & Humidity
Montbretia
Temperature: 15-25°C
Humidity: 40-60%
Princess Tree
Temperature: 15-27°C
Humidity: 30-50%
🤔 Which Plant Is Right For You?
Montbretia
Crocosmia × crocosmiifloraGardeners looking for vibrant summer blooms and who want to attract pollinators outdoors.
✅ Choose This Plant If...
- You want to attract hummingbirds and butterflies to your garden.
- You love vibrant orange, red, and yellow flowers.
- You have a sunny garden spot that needs a splash of color.
- You are prepared to manage its aggressive spreading habit.
- You want a relatively low-maintenance perennial once established.
❌ Skip This Plant If...
- You have pets that might ingest the plant.
- You don't have a sunny outdoor space.
- You don't want a plant that spreads aggressively.
Princess Tree
Paulownia tomentosaLandowners with large properties in non-invasive regions who appreciate fast-growing shade trees with showy spring flowers.
✅ Choose This Plant If...
- You have a large outdoor space and want a fast-growing shade tree.
- You appreciate fragrant spring flowers.
- You are prepared to manage its potentially invasive nature.
- You want a tree that can tolerate a variety of soil conditions.
- You are looking for a tree that provides habitat for wildlife.
❌ Skip This Plant If...
- You have a small garden or limited space.
- You live in a region where it is considered invasive.
- You are not prepared to manage its rapid growth and spread.
🎯 Quick Verdict
⚡ Key Differences Between These Plants
Montbretia has fast, aggressive spreader via corms. growth, while Princess Tree grows fast.
💡 Pro Tips For Comparing These Plants
Montbretia Care Tips
Montbretia is primarily an outdoor plant that requires full sun and well-drained soil. It can be challenging to grow indoors due to its high light needs and aggressive spreading habit. Regular division of corms is necessary to control its spread. Toxicity to pets is a significant concern.
- Plant in well-draining soil to prevent corm rot.
- Divide corms every 2-3 years to control spread and maintain vigor.
- Provide full sun for optimal flowering.
- Water regularly during the growing season.
- Fertilize in spring and after flowering.
Princess Tree Care Tips
Paulownia tomentosa is an outdoor tree that requires full sun and well-draining soil. It is not suitable for indoor cultivation due to its size and light requirements. It is considered invasive in many areas, requiring careful management to prevent its spread.
- Monitor for invasive spread and remove seedlings promptly.
- Prune regularly to maintain shape and remove dead or damaged branches.
- Water deeply during dry periods, especially when young.
- Fertilize in early spring with a balanced fertilizer.
- Protect young trees from strong winds.
⚠️ Common Problems & Solutions — Plant Care Comparison
Montbretia
Princess Tree
❓ Frequently Asked Questions — Comparing These Plants
Montbretia
What are the light requirements for Montbretia?
Montbretia requires plenty of sunlight to produce its vibrant blooms. Aim for at least 6 hours of direct sunlight per day. In hotter climates, provide some afternoon shade to prevent scorching. Insufficient light can result in leggy growth, fewer flowers, and duller colors. When planting in containers, choose a location that receives ample sunlight. If growing indoors, place Montbretia near a sunny window, preferably a south-facing one. Rotate the plant regularly to ensure even light exposure on all sides. Supplement with grow lights if natural light is insufficient, especially during winter months.
How do I care for Montbretia?
Montbretia thrives in full sun to partial shade, requiring at least 6 hours of sunlight daily for optimal blooming. Water thoroughly when the top inch of soil feels dry, avoiding overwatering which can lead to root rot. Plant in well-draining soil to prevent waterlogging. Fertilize in spring with a balanced fertilizer to promote healthy growth and abundant blooms. Deadhead spent flowers to encourage more blooms. In colder climates, lift the corms in the fall and store them in a cool, dry place over winter. Alternatively, provide a thick layer of mulch for winter protection. Divide clumps every few years to prevent overcrowding and maintain vigor. Monitor for pests and diseases, and treat promptly if necessary. Regular care will ensure a vibrant display of Montbretia blooms year after year.
How do I propagate Montbretia?
Montbretia is easily propagated by division. In spring or fall, carefully dig up the clump and separate the corms. Ensure each division has healthy roots and foliage. Replant the divisions in well-draining soil. Water thoroughly. Montbretia does not typically produce keiki. Stem cuttings are not a standard method for Montbretia propagation. Division is the most reliable method. Alternatively, you can collect and sow seeds, though this method can be slow and may not produce plants true to the parent.
Princess Tree
What are the light requirements for Princess Tree?
Princess Tree thrives in bright, indirect light. Insufficient light can lead to leggy growth and reduced leaf size. Place your Princess Tree near a sunny window, ideally facing east or west. If you only have a south-facing window, filter the light with a sheer curtain to prevent scorching. Rotate the plant regularly to ensure even light exposure on all sides. If natural light is limited, consider supplementing with artificial grow lights to provide the necessary light intensity. Pale leaves or slow growth can indicate insufficient light.
How do I care for Princess Tree?
To successfully grow Princess Tree indoors, provide it with bright, indirect light; direct sunlight can scorch the leaves. Water thoroughly when the top inch of soil feels dry, ensuring good drainage to prevent root rot. Maintain moderate humidity levels, especially during the winter months when indoor air tends to be drier. Fertilize regularly during the growing season (spring and summer) with a balanced liquid fertilizer diluted to half strength. Repot the plant every 1-2 years, or when it becomes root-bound, using a well-draining potting mix. Prune as needed to maintain shape and remove any dead or damaged leaves. Monitor for pests such as spider mites and aphids, and treat promptly with insecticidal soap or neem oil. Maintain stable temperatures, avoiding drastic fluctuations.
How do I propagate Princess Tree?
Princess Tree can be propagated through stem cuttings and air layering.
Last updated: May 5, 2026 — Plant care data reviewed and verified by our editorial team.