Lemon Balm vs Princess Flower Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Lemon Balm
Melissa officinalis
Lemon balm is a perennial herb in the mint family, known for its lemon-scented leaves. It typically grows to a height of 30-60 cm (1-2 feet). The plant has a bushy growth habit and spreads via rhizomes. It is primarily grown outdoors for its aromatic leaves, which are used in teas, culinary dishes, and herbal remedies. While it can be grown indoors, maintaining optimal conditions for healthy growth can be challenging. People grow it for its calming properties and pleasant scent.
Princess Flower
Tibouchina urvilleana
Tibouchina urvilleana, commonly known as Princess Flower, is a fast-growing evergreen shrub or small tree prized for its vibrant purple flowers. Native to Brazil, it typically grows outdoors in warm climates. It features velvety, dark green leaves and produces profuse blooms throughout the warmer months. While it can be grown in containers, it requires significant sunlight and humidity to thrive, making it challenging to maintain indoors long-term. People grow it for its showy flowers and tropical appearance.
Quick Plant Comparison
| Feature | Lemon Balm | Princess Flower |
|---|---|---|
| Light | Full sun to partial shade | Full sun to partial shade. Requires at least 6 hours of direct sunlight daily for optimal flowering. |
| Watering | Every 5-7 days outdoors; Every 7-10 days indoors, adjusting based on environmental conditions. | Every 3-7 days, depending on environmental conditions and pot size. |
| Humidity | 40-60% | 50-70% |
| Temperature | 18-24°C | 18-27°C |
| Care Level | Expert | Expert |
| Growth Rate | Fast | Fast |
| Max Height | 30-60 cm (1-2 feet) indoors; up to 90 cm (3 feet) outdoors | 1-2 meters (indoors, rarely reaches outdoor size) |
| Pet Safety | ❌ Toxic To Pets | ❌ Toxic To Pets |
| Soil | Well-draining soil, such as a mix of potting soil, perlite, and compost. | Well-draining, slightly acidic soil mix. A mix of potting soil, peat moss, and perlite is suitable. |
| Beginner Friendly | ❌ No | ❌ No |
| Weekly Maintenance | 15 minutes weekly | 30 minutes weekly |
🔬 Botanical Information — Comparing These Plants
Lemon Balm
| Scientific Name | Melissa officinalis |
|---|---|
| Family | Lamiaceae |
| Native To | Southern Europe and the Mediterranean region |
| Also Known As | Lemon Balm, Balm Mint |
| Leaves | The leaves are oval to heart-shaped, approximately 2-8 cm (1-3 inches) long, and have a serrated edge. They are typically a light to medium green color. The leaves are slightly hairy and have a wrinkled texture. When crushed, they release a strong lemon scent. |
| Flowers | Lemon balm produces small, inconspicuous white or pale pink flowers in the summer. It rarely flowers indoors. |
Princess Flower
| Scientific Name | Tibouchina urvilleana |
|---|---|
| Family | Melastomataceae |
| Native To | Brazil |
| Also Known As | Princess Flower, Glory Bush, Lasiandra |
| Leaves | Oppositely arranged, ovate to lance-shaped leaves with a velvety texture. The leaves are typically dark green and can grow up to 15 cm long. |
| Flowers | Produces profuse, showy purple flowers with prominent stamens. Flowers are typically 7-10 cm in diameter. Flowering is less likely indoors due to insufficient light. |
📏 Size & Growth — Plant Comparison
Lemon Balm
Princess Flower
🌱 Propagation — Comparing Plant Growth
Lemon Balm
Methods: Stem cuttings, Division, Seed
Difficulty: Easy
Tips: For stem cuttings, take a 4-6 inch cutting from a healthy stem, remove the lower leaves, and place in water or directly into moist soil. For division, separate the root ball into smaller sections and replant. Seeds can be sown directly into the soil in spring.
Princess Flower
Methods: Stem cuttings, Seed
Difficulty: Moderate
Tips: Take stem cuttings in spring or summer. Dip the cut end in rooting hormone and plant in moist potting mix. Keep the cuttings in a warm, humid environment until roots develop.
✨ Benefits & Features — Comparing Plant Value
Lemon Balm
Lemon balm is distinguished by its strong lemon scent and flavor, which is due to the presence of citronellal, citronellol, and geraniol. Its leaves are also slightly hairy, giving them a soft texture.
- ✓ Provides fresh herbs for teas and culinary use.
- ✓ Attracts pollinators to the garden.
- ✓ Offers a pleasant lemon scent.
- ✓ May have calming and stress-reducing properties.
- ✓ Can be used in homemade beauty products.
- ⚠️ Toxic to pets
Princess Flower
The velvety texture of the leaves and the vibrant purple color of the flowers make this plant stand out. It's also a fast grower, quickly filling in garden spaces.
- ✓ Provides vibrant color to gardens and patios.
- ✓ Attracts pollinators like bees and butterflies.
- ✓ Can be pruned into a desired shape.
- ✓ Offers a tropical aesthetic.
- ✓ Can be grown in containers on patios or balconies.
- ⚠️ Toxic to pets
📅 Maintenance Schedule — Plant Care Comparison
Lemon Balm
Princess Flower
🌞 Light Requirements
Lemon Balm
Full sun to partial shade
Low light tolerant: ❌ No
Princess Flower
Full sun to partial shade. Requires at least 6 hours of direct sunlight daily for optimal flowering.
Low light tolerant: ❌ No
💧 Watering Needs
Lemon Balm
Water thoroughly when the top inch of soil feels dry. Avoid overwatering, which can lead to root rot. Signs of overwatering include yellowing leaves and a musty smell. Underwatering is indicated by wilting and dry, crispy leaves.
Princess Flower
Water thoroughly when the top inch of soil feels dry. Avoid overwatering, which can lead to root rot. Allow excess water to drain away. Signs of underwatering include wilting leaves; signs of overwatering include yellowing leaves and soggy soil.
🌡️ Temperature & Humidity
Lemon Balm
Temperature: 18-24°C
Humidity: 40-60%
Princess Flower
Temperature: 18-27°C
Humidity: 50-70%
🤔 Which Plant Is Right For You?
Lemon Balm
Melissa officinalisExperienced gardeners who want a fragrant herb for teas and culinary uses, and who can manage its spreading habit and pet toxicity.
✅ Choose This Plant If...
- You enjoy making herbal teas and want a fresh source of lemon balm.
- You appreciate fragrant plants with calming properties.
- You have a sunny garden space where it can thrive.
- You are experienced with managing fast-growing herbs.
- You want to attract pollinators to your garden.
❌ Skip This Plant If...
- You have pets that might ingest it.
- You have limited sunlight indoors.
- You are a beginner gardener.
- You don't want a plant that spreads aggressively.
- You are looking for a low-maintenance indoor plant.
Princess Flower
Tibouchina urvilleanaExperienced gardeners in warm climates who want a showy flowering shrub for their garden.
✅ Choose This Plant If...
- You live in a warm climate with plenty of sunshine.
- You want a plant with vibrant purple flowers.
- You have experience caring for demanding plants.
- You have a greenhouse or sunroom to provide adequate light and humidity.
- You are willing to provide regular pruning and fertilization.
❌ Skip This Plant If...
- You live in a cold climate with limited sunlight.
- You are a beginner gardener.
- You have pets that may ingest the plant.
- You don't have time for regular pruning and fertilization.
- You don't have a bright, sunny location.
🎯 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
Lemon Balm Care Tips
Lemon balm is relatively easy to grow outdoors. Indoors, it requires bright light (often supplemented with grow lights) and careful watering to prevent root rot. Its aggressive spreading habit needs to be managed in containers. Due to its toxicity to pets, keep it out of reach.
- Provide ample sunlight, especially when grown indoors.
- Water thoroughly but allow the soil to dry slightly between waterings.
- Prune regularly to maintain a compact shape and prevent excessive spreading.
- Monitor for pests and diseases, and treat promptly.
- Use a well-draining potting mix to prevent root rot.
Princess Flower Care Tips
Princess Flower is primarily an outdoor plant that requires full sun and high humidity. Indoor cultivation is challenging due to the difficulty of providing adequate light and humidity. It needs regular watering and fertilization. Expect reduced flowering and potential pest issues indoors.
- Provide at least 6 hours of direct sunlight daily.
- Water thoroughly when the top inch of soil is dry.
- Fertilize regularly during the growing season.
- Prune after flowering to maintain shape.
- Monitor for pests and diseases regularly.
⚠️ Common Problems & Solutions — Plant Care Comparison
Lemon Balm
Princess Flower
❓ Frequently Asked Questions — Comparing These Plants
Lemon Balm
What are the light requirements for Lemon Balm?
Lemon Balm thrives in partial to full sunlight. Ideally, it needs at least 4-6 hours of direct sunlight each day to promote healthy growth and abundant flowering. When grown indoors, place it near a sunny window, such as a south-facing or east-facing window. If natural light is insufficient, supplement with grow lights to ensure adequate illumination. Insufficient light can lead to leggy growth and reduced flowering. Rotate the plant regularly to ensure even light exposure on all sides. Avoid placing it in excessively shaded areas, as this can weaken the plant and make it more susceptible to pests and diseases. A bright, sunny location is key to a thriving and fragrant Lemon Balm.
How do I care for Lemon Balm?
Lemon Balm is relatively easy to care for, making it a great choice for beginner gardeners. Provide it with partial to full sunlight, ideally 4-6 hours of direct sun daily. Water regularly, keeping the soil consistently moist but not waterlogged, especially during the growing season. Fertilize monthly with a balanced liquid fertilizer diluted to half strength to encourage blooming. Prune regularly to maintain shape and prevent it from becoming leggy. Lemon Balm prefers well-draining soil rich in organic matter. Maintain a humidity level of 40-60%. Repot annually in spring to refresh the soil. Monitor for pests like aphids and spider mites, and treat promptly if detected. In colder climates, protect the plant from frost by bringing it indoors or providing adequate insulation. Deadhead spent blooms to encourage further flowering.
How do I propagate Lemon Balm?
Lemon Balm is easily propagated through several methods. Division is best done in spring or fall by carefully separating the root ball into smaller sections and replanting them. Stem cuttings can be taken in spring or summer; cut a 4-6 inch stem just below a node, remove the lower leaves, and place the cutting in water or directly into moist potting mix. Keep the soil consistently moist until roots develop, which usually takes a few weeks. While Lemon Balm doesn’t produce keiki, its vigorous growth allows for abundant cuttings. Ensure cuttings receive bright, indirect light and a humid environment to encourage rooting. Once rooted, transplant into individual pots. Propagation ensures a continuous supply of this fragrant and useful herb.
Princess Flower
What are the light requirements for Princess Flower?
Princess Flower thrives in bright, indirect sunlight. Ideally, it needs at least 6 hours of sunlight per day to produce abundant blooms. A location near an east- or west-facing window is often suitable indoors. Avoid direct afternoon sun, which can scorch the leaves. If grown outdoors, provide partial shade during the hottest part of the day. Insufficient light can result in fewer blooms and leggy growth. Rotate the plant regularly to ensure even light exposure on all sides. During the winter months, when sunlight is less intense, consider supplementing with artificial grow lights.
How do I care for Princess Flower?
Princess Flower requires well-draining, acidic soil with a pH of 5.5 to 6.5. Water thoroughly when the top inch of soil feels dry, allowing excess water to drain. Fertilize every 2-4 weeks during the growing season (spring to fall) with a balanced fertilizer formulated for flowering plants. Prune regularly to maintain shape and encourage bushier growth and more blooms. Provide bright, indirect sunlight for at least 6 hours a day. Maintain a moderate humidity level, especially indoors. Protect from frost and freezing temperatures. Repot every 1-2 years as needed, using a slightly larger pot. Monitor for pests like aphids and spider mites, and treat promptly if detected. Ensure good air circulation to prevent fungal diseases.
How do I propagate Princess Flower?
Princess Flower can be propagated using stem cuttings. Take 4-6 inch cuttings from new growth in spring or summer. Remove the lower leaves and dip the cut end in rooting hormone. Plant the cuttings in a well-draining potting mix. Keep the soil moist and provide bright, indirect light. Rooting typically occurs within 4-8 weeks. Division can be done when repotting mature plants, carefully separating the root ball. Keikis are not common on Princess Flower.
Last updated: May 9, 2026 — Plant care data reviewed and verified by our editorial team.