Lipstick Plant vs Onion Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Lipstick Plant
Aeschynanthus radicans
The Lipstick Plant (Aeschynanthus radicans) is an epiphytic vine prized for its unique flowers that resemble tubes of lipstick emerging from a dark-colored case. It features long, trailing stems adorned with small, oval-shaped, dark green leaves. Primarily grown as a hanging plant, it thrives indoors with proper care. Its cascading growth habit and vibrant blooms make it a popular choice for adding a touch of the tropics to homes. While it can survive outdoors in very warm climates, it's predominantly an indoor plant due to its sensitivity to cold temperatures.
Onion
Allium cepa
The onion (Allium cepa) is a biennial plant, typically grown as an annual, cultivated for its edible bulb. It features hollow, bluish-green leaves and a bulb that develops at the base of the plant. Onions are primarily grown outdoors in gardens or fields. While it's possible to sprout an onion indoors, it's not typically grown to full maturity as a houseplant due to its strong odor and specific environmental needs. People grow onions for culinary purposes, adding flavor to a wide variety of dishes.
Quick Plant Comparison
| Feature | Lipstick Plant | Onion |
|---|---|---|
| Light | Bright, indirect light. Avoid direct sunlight, which can scorch the leaves. | Full sun (6-8 hours of direct sunlight daily) |
| Watering | Every 7-10 days, adjust based on environmental conditions and pot size. | Every 5-7 days, depending on weather and soil drainage |
| Humidity | 50-70% | 40-60% |
| Temperature | 18-24°C | 13-24°C |
| Care Level | Moderate | Expert |
| Growth Rate | Moderate | Moderate |
| Max Height | 30-60 cm (indoors) | Outdoors: 30-60 cm. Indoors (sprouted): Up to 30cm |
| Pet Safety | ❌ Toxic To Pets | ❌ Toxic To Pets |
| Soil | Well-draining potting mix, such as a mix of peat moss, perlite, and orchid bark. | Well-draining, fertile soil rich in organic matter |
| Beginner Friendly | With Caution | With Caution |
| Weekly Maintenance | 10 minutes weekly | 30 minutes weekly (weeding, watering, pest control) |
🔬 Botanical Information — Comparing These Plants
Lipstick Plant
| Scientific Name | Aeschynanthus radicans |
|---|---|
| Family | Gesneriaceae |
| Native To | Malaysia, Indonesia, Thailand, Vietnam |
| Also Known As | Lipstick Plant, Lipstick Vine |
| Leaves | Small, oval-shaped leaves, typically 2-5 cm long. They are usually a deep green color and have a slightly waxy texture. |
| Flowers | Yes, it can flower indoors with proper care. The flowers are tubular, bright red, and emerge from dark-colored bracts, resembling tubes of lipstick. |
Onion
| Scientific Name | Allium cepa |
|---|---|
| Family | Amaryllidaceae |
| Native To | Central Asia |
| Also Known As | Onion, Bulb Onion, Common Onion |
| Leaves | The leaves are hollow, cylindrical, and bluish-green, growing directly from the bulb. They are typically 30-50 cm long and taper to a point. |
| Flowers | Onions produce a spherical umbel of small, white or purple flowers on a tall stalk. Flowering is more common in the second year of growth. Flowering rarely occurs indoors. |
📏 Size & Growth — Plant Comparison
Lipstick Plant
Onion
🌱 Propagation — Comparing Plant Growth
Lipstick Plant
Methods: Stem cuttings
Difficulty: Easy
Tips: Take 10-15 cm stem cuttings with at least 2-3 nodes. Remove the lower leaves and place the cutting in water or directly into moist potting mix. Keep the cutting in a warm, humid environment until roots develop.
Onion
Methods: Seed, Bulb division
Difficulty: Easy
Tips: Start seeds indoors 8-10 weeks before the last frost or plant sets (small bulbs) directly in the garden after the last frost. For bulb division, separate small bulbs from a larger cluster and plant them individually.
✨ Benefits & Features — Comparing Plant Value
Lipstick Plant
The Lipstick Plant is distinguished by its unique flowers that emerge from dark-colored bracts, resembling tubes of lipstick. Its trailing growth habit and epiphytic nature make it a visually appealing and adaptable houseplant.
- ✓ Adds a vibrant pop of color to indoor spaces.
- ✓ Unique and eye-catching flowers serve as a conversation starter.
- ✓ Relatively easy to propagate, allowing you to expand your collection.
- ✓ Trailing growth habit adds visual interest to hanging baskets.
- ✓ Can help improve indoor humidity levels.
- ⚠️ Toxic to pets
Onion
The onion is a bulbous plant with a distinctive pungent odor and flavor. Its layers of fleshy scales form the edible bulb, which is used in a wide variety of culinary applications.
- ✓ Provides fresh, flavorful onions for cooking.
- ✓ Rich in vitamins and minerals.
- ✓ Can deter pests in the garden.
- ✓ Offers a rewarding gardening experience.
- ✓ Supports sustainable food practices.
- ⚠️ Toxic to pets
📅 Maintenance Schedule — Plant Care Comparison
Lipstick Plant
Onion
🌞 Light Requirements
Lipstick Plant
Bright, indirect light. Avoid direct sunlight, which can scorch the leaves.
Low light tolerant: ❌ No
Onion
Full sun (6-8 hours of direct sunlight daily)
Low light tolerant: ❌ No
💧 Watering Needs
Lipstick Plant
Water thoroughly when the top inch of soil feels dry. Ensure good drainage to prevent root rot. Overwatering can lead to yellowing leaves and stem rot. Underwatering results in shriveled leaves and bud drop.
Onion
Water deeply when the top inch of soil is dry. Avoid overwatering, which can lead to bulb rot. Signs of overwatering include yellowing leaves and a soft, mushy bulb. Underwatering is indicated by wilting leaves and stunted growth.
🌡️ Temperature & Humidity
Lipstick Plant
Temperature: 18-24°C
Humidity: 50-70%
Onion
Temperature: 13-24°C
Humidity: 40-60%
🤔 Which Plant Is Right For You?
Lipstick Plant
Aeschynanthus radicansPlant enthusiasts looking for a unique and visually appealing hanging plant with vibrant blooms.
✅ Choose This Plant If...
- You want a unique hanging plant with vibrant, eye-catching flowers.
- You have a bright, indirect light location in your home.
- You enjoy the challenge of providing moderate humidity for tropical plants.
- You are looking for a plant that can be easily propagated from cuttings.
- You appreciate plants with a trailing growth habit.
❌ Skip This Plant If...
- You have pets that might ingest the plant.
- You struggle to provide adequate humidity for tropical plants.
- You tend to overwater your plants.
- You don't have a location with bright, indirect light.
Onion
Allium cepaGardeners looking to grow their own culinary onions.
✅ Choose This Plant If...
- You want to grow your own fresh onions for cooking.
- You have a sunny outdoor garden space.
- You enjoy the process of nurturing plants from seed to harvest.
- You want to control the quality and source of your food.
- You are looking for a companion plant to deter pests in your vegetable garden.
❌ Skip This Plant If...
- You have pets that might ingest the plant.
- You lack a sunny outdoor space.
- You are sensitive to strong odors.
🎯 Quick Verdict
⚡ Key Differences Between These Plants
Lipstick Plant is rated Moderate care level, while Onion is Expert.
💡 Pro Tips For Comparing These Plants
Lipstick Plant Care Tips
Lipstick Plants are relatively easy to care for indoors, requiring bright, indirect light, well-draining soil, and moderate humidity. Consistent watering and occasional fertilization will encourage healthy growth and flowering. Watch out for pests and diseases.
- Provide bright, indirect light to encourage flowering.
- Maintain consistent moisture, but avoid overwatering.
- Increase humidity by misting regularly or using a humidifier.
- Fertilize regularly during the growing season to promote healthy growth.
- Prune after flowering to maintain shape and encourage bushier growth.
Onion Care Tips
Onions are primarily outdoor plants requiring full sun and well-drained soil. Growing them indoors is challenging due to their need for intense sunlight and the potential for strong odors. While sprouting an onion indoors is possible, achieving a mature bulb is difficult.
- Plant in well-drained soil amended with compost.
- Water deeply but infrequently, allowing the soil to dry slightly between waterings.
- Fertilize regularly during the growing season with a balanced fertilizer.
- Protect from pests and diseases with appropriate measures.
- Harvest when the tops begin to fall over and the bulbs are mature.
⚠️ Common Problems & Solutions — Plant Care Comparison
Lipstick Plant
Onion
❓ Frequently Asked Questions — Comparing These Plants
Lipstick Plant
What are the light requirements for Lipstick Plant?
Lipstick Plants require bright, indirect light to thrive. East-facing windows are ideal, as they provide gentle morning sun. West- or south-facing windows can work if the plant is placed a few feet away to avoid direct sunlight, which can scorch the leaves. Insufficient light can result in fewer flowers and leggy growth. If you don’t have adequate natural light, consider using a grow light to supplement. Rotate the plant regularly to ensure even growth on all sides. During the winter months, when light levels are lower, you may need to move the plant to a brighter location or increase the use of grow lights. Observing the plant’s growth and leaf color will help you determine if it’s receiving the appropriate amount of light.
How do I care for Lipstick Plant?
Lipstick Plants thrive in bright, indirect light; avoid direct sunlight, which can scorch the leaves. Water thoroughly when the top inch of soil feels dry, ensuring good drainage to prevent root rot. Use a well-draining potting mix, such as a mix of peat moss, perlite, and vermiculite. Fertilize monthly during the growing season (spring and summer) with a balanced liquid fertilizer diluted to half strength. Maintain a humidity level of 50-70%, which can be achieved by misting, using a humidifier, or placing the plant on a pebble tray. Prune regularly to encourage bushier growth and remove any dead or yellowing leaves. Provide a support structure, such as a trellis or moss pole, if you want the plant to climb, or allow it to trail freely from a hanging basket. Repot every 1-2 years as needed, using a slightly larger pot.
How do I propagate Lipstick Plant?
Lipstick Plants can be easily propagated via stem cuttings. Take a 4-6 inch cutting from a healthy stem, ensuring it has several leaves. Remove the lower leaves and place the cutting in water or directly into moist potting mix. For water propagation, change the water every few days. Roots should develop within a few weeks. Once roots are established, plant the cutting in a pot with well-draining soil. Layering is another option. Pin a stem to the soil while still attached to the mother plant. Once roots form, sever the new plant from the mother.
Onion
What are the light requirements for Onion?
Flowering onions require ample sunlight to thrive and produce abundant blooms. Aim for at least 6-8 hours of direct sunlight per day. Inadequate light can lead to leggy growth, weak stems, and reduced flowering. If growing indoors, place your onion plant near a south-facing window where it can receive maximum sunlight exposure. If natural light is insufficient, supplement with grow lights. Rotate the plant regularly to ensure even light distribution and prevent it from leaning towards the light source. Monitor the foliage for signs of sunburn, which can occur if the plant is exposed to intense afternoon sun. Adjust the placement or provide shade if necessary.
How do I care for Onion?
Flowering onions thrive with proper care. Plant bulbs in well-draining soil in a sunny location. Water thoroughly after planting and then moderately, allowing the soil to dry slightly between waterings. Fertilize sparingly with a balanced fertilizer during the growing season, and increase phosphorus before blooming. Deadhead spent flowers to encourage continued blooming. Provide support for taller varieties to prevent drooping. In colder climates, protect bulbs with a layer of mulch during winter. Monitor for pests and diseases, and address promptly. Ensure good air circulation to prevent fungal issues. Repot container-grown onions every few years to refresh the soil. Regular check-ups will keep your onion plant healthy and flourishing.
How do I propagate Onion?
Flowering onions can be propagated through several methods. Division is the most common and easiest. When the plant is dormant, carefully dig up the clump and separate the bulbs. Replant the individual bulbs in well-draining soil. Stem cuttings are not typically used for onion propagation. Keiki (small plantlets that form on the flower stalk) are rare in onions. For bulb offsets, detach them carefully from the mother bulb and plant them separately. Water regularly and provide adequate sunlight. Propagation is best done in the fall or early spring. Ensure the new plants have adequate space to develop their root systems. With proper care, the propagated onions will develop into mature, flowering plants within a year or two.
Last updated: May 7, 2026 — Plant care data reviewed and verified by our editorial team.