Moreton Bay Fig vs Onion Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Moreton Bay Fig
Ficus macrophylla
The Moreton Bay Fig is a massive evergreen tree characterized by its impressive buttress roots and wide-spreading canopy. In its native habitat, it can reach heights of over 60 meters. It is primarily an outdoor tree, valued for its shade and dramatic presence. It is not naturally an indoor plant, and maintaining it indoors long-term is challenging due to its size and light requirements. People grow it outdoors for its ornamental value and shade.
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 | Moreton Bay Fig | Onion |
|---|---|---|
| Light | Full sun to partial shade. Requires at least 6 hours of direct sunlight daily. | Full sun (6-8 hours of direct sunlight daily) |
| Watering | Every 1-2 weeks, depending on weather and soil drainage. | Every 5-7 days, depending on weather and soil drainage |
| Humidity | 40-60% | 40-60% |
| Temperature | 18-27°C | 13-24°C |
| Care Level | Expert | Expert |
| Growth Rate | Fast | Moderate |
| Max Height | Rarely exceeds 3 meters indoors, but can reach 60+ meters outdoors. | Outdoors: 30-60 cm. Indoors (sprouted): Up to 30cm |
| Pet Safety | ❌ Toxic To Pets | ❌ Toxic To Pets |
| Soil | Well-draining soil mix, such as a blend of loam, sand, and perlite. | Well-draining, fertile soil rich in organic matter |
| Beginner Friendly | ❌ No | With Caution |
| Weekly Maintenance | 30 minutes weekly (mostly watering and occasional pruning). | 30 minutes weekly (weeding, watering, pest control) |
🔬 Botanical Information — Comparing These Plants
Moreton Bay Fig
| Scientific Name | Ficus macrophylla |
|---|---|
| Family | Moraceae |
| Native To | Eastern Australia |
| Also Known As | Moreton Bay Fig, Australian Banyan |
| Leaves | The leaves are large, oval-shaped, and leathery, typically 10-20 cm long. They are dark green and glossy on the upper surface, with a paler green underside. New leaves emerge with a reddish tint. |
| Flowers | It rarely flowers indoors. Outdoors, it produces small, inconspicuous flowers within a syconium (a fig-like structure). |
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
Moreton Bay Fig
Onion
🌱 Propagation — Comparing Plant Growth
Moreton Bay Fig
Methods: Stem cuttings, Air layering, Seed
Difficulty: Moderate
Tips: Take stem cuttings in spring or summer. Use rooting hormone and provide warmth and humidity. Air layering is also effective.
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
Moreton Bay Fig
The Moreton Bay Fig is known for its massive size, buttress roots, and wide-spreading canopy. Its aerial roots can also develop into additional trunks, creating a unique and impressive structure. The tree's size and root system make it a dominant feature in any landscape.
- ✓ Provides significant shade in outdoor spaces.
- ✓ Adds a dramatic and unique aesthetic to the landscape.
- ✓ Can increase property value.
- ✓ Offers a habitat for birds and other wildlife.
- ✓ Provides a sense of grandeur and maturity to the garden.
- ⚠️ 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
Moreton Bay Fig
Onion
🌞 Light Requirements
Moreton Bay Fig
Full sun to partial shade. Requires at least 6 hours of direct sunlight daily.
Low light tolerant: ❌ No
Onion
Full sun (6-8 hours of direct sunlight daily)
Low light tolerant: ❌ No
💧 Watering Needs
Moreton Bay Fig
Water deeply when the topsoil is dry. Allow the soil to dry out slightly between waterings. Overwatering can lead to root rot. Underwatering will cause leaf drop and stunted growth. Ensure good drainage.
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
Moreton Bay Fig
Temperature: 18-27°C
Humidity: 40-60%
Onion
Temperature: 13-24°C
Humidity: 40-60%
🤔 Which Plant Is Right For You?
Moreton Bay Fig
Ficus macrophyllaExperienced gardeners with outdoor space who appreciate large, statement trees.
✅ Choose This Plant If...
- You have ample outdoor space and want a large shade tree.
- You appreciate the dramatic appearance of buttress roots.
- You are an experienced gardener willing to provide the necessary care.
- You live in a warm climate where the tree can thrive.
- You want a long-lived tree that will become a significant landscape feature.
❌ Skip This Plant If...
- You have limited space, especially indoors.
- You are a beginner gardener.
- You have pets that might ingest the toxic plant parts.
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
Moreton Bay Fig has fast growth, while Onion grows moderate.
💡 Pro Tips For Comparing These Plants
Moreton Bay Fig Care Tips
The Moreton Bay Fig is primarily an outdoor tree and is challenging to grow indoors. It requires very bright light, consistent watering, and careful monitoring for pests. Its large size makes it unsuitable for most indoor spaces. Indoor growth will be significantly stunted compared to its outdoor potential.
- Provide ample sunlight, especially if attempting to grow indoors.
- Ensure excellent drainage to prevent root rot.
- Monitor regularly for pests and diseases.
- Prune to maintain shape and remove deadwood.
- Protect from frost in colder climates.
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
Moreton Bay Fig
Onion
❓ Frequently Asked Questions — Comparing These Plants
Moreton Bay Fig
What are the light requirements for Moreton Bay Fig?
Moreton Bay Figs require bright, indirect light to thrive indoors. Placing them near a large east- or west-facing window is ideal, providing ample light without direct sun exposure. A south-facing window can also work, but it’s important to filter the light with a sheer curtain to prevent leaf burn. Insufficient light can lead to leggy growth and leaf drop. Rotate the plant regularly to ensure all sides receive adequate light. If natural light is limited, consider supplementing with a grow light. The light should be consistent.
How do I care for Moreton Bay Fig?
The Moreton Bay Fig thrives in bright, indirect light; avoid direct sunlight which can scorch the leaves. Water thoroughly when the top inch of soil is dry, allowing excess water to drain away. Overwatering can lead to root rot, so ensure the pot has drainage holes. Maintain a consistent temperature between 65-75°F (18-24°C) and avoid sudden temperature fluctuations. These plants appreciate humidity; mist the leaves regularly or use a humidifier. Fertilize monthly during the growing season (spring and summer) with a balanced liquid fertilizer diluted to half strength. Prune occasionally to maintain shape and remove any dead or damaged branches. Repot every 2-3 years into a slightly larger pot with well-draining potting mix. Rotate the plant regularly to ensure even growth on all sides. Keep the pot clean.
How do I propagate Moreton Bay Fig?
Moreton Bay Figs can be propagated through stem cuttings or air layering. For stem cuttings, take a 4-6 inch cutting from a healthy stem, remove the lower leaves, and dip the cut end in rooting hormone. Plant the cutting in moist potting mix and cover with a plastic bag to maintain humidity. Keep in a warm, bright location until roots develop. For air layering, make a small cut on a stem, wrap it with moist sphagnum moss, and cover with plastic wrap. Once roots develop, cut the stem below the roots and plant in potting mix. Propagation is best done in the spring or summer. Always use clean tools. Patience is key.
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: April 29, 2026 — Plant care data reviewed and verified by our editorial team.