Myrtle Spurge vs Ornamental Onion Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Myrtle Spurge
Euphorbia myrsinites
Myrtle Spurge is a succulent, low-growing perennial characterized by its sprawling habit and blue-gray, spirally arranged leaves. It typically reaches a height of 6-12 inches and spreads up to 24 inches wide. It is primarily grown as an ornamental ground cover in rock gardens or dry landscapes. It produces small, inconspicuous yellowish-green flowers in spring, followed by seed capsules. This plant is naturally an outdoor plant and struggles indoors due to its high light requirements and need for well-draining soil.
Ornamental Onion
Allium spp.
Ornamental onions are bulbous perennials grown for their showy, spherical flower heads in shades of purple, pink, white, and yellow. The foliage is typically grass-like or strap-shaped and often dies back before or during flowering. They range in size from a few inches to several feet tall, depending on the species. These plants are primarily grown outdoors in gardens and borders for their architectural interest and pollinator-attracting blooms. While some smaller varieties can be grown in containers, they are generally not suited for indoor cultivation due to their high light requirements and dormancy needs.
Quick Plant Comparison
| Feature | Myrtle Spurge | Ornamental Onion |
|---|---|---|
| Light | Full sun to partial shade. Requires at least 6 hours of direct sunlight daily for optimal growth. | Full sun (at least 6-8 hours of direct sunlight daily) |
| Watering | Every 2-4 weeks, depending on weather and soil drainage. | Every 1-2 weeks during the growing season, less frequently during dormancy. |
| Humidity | 20-40% | 30-50% |
| Temperature | 15-25°C | 10-24°C |
| Care Level | Expert | Expert |
| Growth Rate | Moderate | Moderate |
| Max Height | 6-12 inches (outdoor) | 0.15-1.5 meters (depending on species) |
| Pet Safety | ❌ Toxic To Pets | ❌ Toxic To Pets |
| Soil | Well-draining, sandy or gravelly soil. Avoid heavy clay soils. | Well-draining soil, such as a mix of garden soil, sand, and compost. |
| Beginner Friendly | ❌ No | ❌ No |
| Weekly Maintenance | 15 minutes monthly (weeding, pruning) | 5 minutes weekly during the growing season. |
🔬 Botanical Information — Comparing These Plants
Myrtle Spurge
| Scientific Name | Euphorbia myrsinites |
|---|---|
| Family | Euphorbiaceae |
| Native To | Mediterranean region (Southern Europe and North Africa) |
| Also Known As | Myrtle Spurge, Donkey Spurge, Creeping Spurge, Glaucous Spurge |
| Leaves | Succulent, blue-gray, lance-shaped leaves arranged in a spiral pattern around the stems. Leaves are typically 1-2 inches long. |
| Flowers | Produces small, inconspicuous yellowish-green flowers in spring. Rarely flowers indoors. |
Ornamental Onion
| Scientific Name | Allium spp. |
|---|---|
| Family | Amaryllidaceae |
| Native To | Various species originate from different regions across the Northern Hemisphere, including Europe, Asia, and North America. |
| Also Known As | Ornamental Onion, Flowering Onion, Allium |
| Leaves | The leaves are typically grass-like or strap-shaped, ranging in color from green to bluish-green. They emerge from the base of the plant and often die back before or during flowering. The leaves have a characteristic onion-like scent when crushed. |
| Flowers | Ornamental onions produce showy, spherical flower heads composed of numerous small, star-shaped flowers. The flowers come in a variety of colors, including purple, pink, white, and yellow. They bloom in late spring or early summer and attract pollinators. |
📏 Size & Growth — Plant Comparison
Myrtle Spurge
Ornamental Onion
🌱 Propagation — Comparing Plant Growth
Myrtle Spurge
Methods: Seed, Stem cuttings
Difficulty: Moderate
Tips: Take stem cuttings in spring or summer, allow the cut end to callous over for a few days, and then plant in well-draining soil. Wear gloves to avoid skin irritation from the sap.
Ornamental Onion
Methods: Bulb offsets, Seed
Difficulty: Moderate
Tips: Divide bulb offsets in the fall after the foliage has died back. Sow seeds in the spring or fall.
✨ Benefits & Features — Comparing Plant Value
Myrtle Spurge
The spirally arranged, blue-gray leaves give it a distinctive appearance. The milky sap is toxic and can cause skin irritation.
- ✓ Drought tolerance reduces water usage.
- ✓ Provides visual interest with its unique foliage.
- ✓ Low maintenance once established.
- ✓ Attracts pollinators.
- ✓ Controls erosion on slopes.
- ⚠️ Toxic to pets
Ornamental Onion
Ornamental onions are known for their striking, spherical flower heads that come in a variety of colors and sizes. They are also deer-resistant and attract pollinators, making them a valuable addition to any garden. Their foliage often dies back before flowering, adding to their unique appeal.
- ✓ Attracts pollinators to the garden
- ✓ Deer-resistant, protecting other plants
- ✓ Adds unique architectural interest
- ✓ Low-maintenance once established
- ✓ Provides long-lasting blooms
- ⚠️ Toxic to pets
📅 Maintenance Schedule — Plant Care Comparison
Myrtle Spurge
Ornamental Onion
🌞 Light Requirements
Myrtle Spurge
Full sun to partial shade. Requires at least 6 hours of direct sunlight daily for optimal growth.
Low light tolerant: ❌ No
Ornamental Onion
Full sun (at least 6-8 hours of direct sunlight daily)
Low light tolerant: ❌ No
💧 Watering Needs
Myrtle Spurge
Water deeply but infrequently, allowing the soil to dry out completely between waterings. Overwatering can lead to root rot. Signs of underwatering include shriveled leaves. Signs of overwatering include yellowing leaves and a mushy stem.
Ornamental Onion
Water thoroughly when the top inch of soil is dry during the growing season. Reduce watering after flowering and during dormancy. Overwatering can lead to bulb rot, especially in poorly draining soil. Underwatering can cause stunted growth and poor flowering.
🌡️ Temperature & Humidity
Myrtle Spurge
Temperature: 15-25°C
Humidity: 20-40%
Ornamental Onion
Temperature: 10-24°C
Humidity: 30-50%
🤔 Which Plant Is Right For You?
Myrtle Spurge
Euphorbia myrsinitesExperienced gardeners looking for a drought-tolerant ground cover in sunny, well-drained locations.
✅ Choose This Plant If...
- You need a drought-tolerant ground cover for a sunny area.
- You appreciate the unique blue-gray foliage.
- You are an experienced gardener familiar with handling toxic plants.
- You want a low-maintenance plant once established.
- You have a rock garden or xeriscape landscape.
❌ Skip This Plant If...
- You have pets or small children who may ingest the plant.
- You are a beginner gardener.
- You do not have a sunny outdoor space.
- You are sensitive to latex or have skin allergies.
Ornamental Onion
Allium spp.Gardeners looking for striking, low-maintenance plants to add architectural interest and attract pollinators to their outdoor spaces.
✅ Choose This Plant If...
- You want a deer-resistant plant for your garden.
- You want to attract pollinators like bees and butterflies to your yard.
- You appreciate unique, architectural flower shapes.
- You are looking for a low-maintenance perennial.
- You have a sunny garden space with well-draining soil.
❌ Skip This Plant If...
- You have pets that may ingest the plant.
- You lack a sunny outdoor space.
- You are looking for a plant that thrives indoors.
🎯 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
Myrtle Spurge Care Tips
Myrtle Spurge is an outdoor plant that requires full sun and well-draining soil. It is not suitable for indoor growing due to its high light requirements and potential for toxicity. It is drought-tolerant and relatively low-maintenance once established, but requires careful handling due to its toxic sap.
- Always wear gloves and eye protection when handling Myrtle Spurge.
- Remove seed heads to prevent unwanted spread.
- Ensure excellent drainage to prevent root rot.
- Water deeply but infrequently.
- Provide full sun for optimal growth and color.
Ornamental Onion Care Tips
Ornamental onions are primarily outdoor plants that require full sun and well-draining soil. They are not well-suited for indoor cultivation due to their high light requirements and dormancy needs. Indoor growing is challenging due to providing sufficient light and managing the dormancy period.
- Plant bulbs in well-draining soil to prevent rot.
- Provide full sun for optimal flowering.
- Allow foliage to die back naturally after flowering.
- Divide bulbs every few years to prevent overcrowding.
- Avoid overwatering, especially during dormancy.
⚠️ Common Problems & Solutions — Plant Care Comparison
Myrtle Spurge
Ornamental Onion
❓ Frequently Asked Questions — Comparing These Plants
Myrtle Spurge
What are the light requirements for Myrtle Spurge?
Myrtle Spurge thrives in bright, direct sunlight. Aim for at least 6 hours of sunlight per day. An east- or south-facing window is ideal. If grown outdoors, choose a location that receives full sun. Insufficient light can lead to etiolation, where the plant stretches towards the light source, resulting in weak, leggy growth. Rotate the plant regularly to ensure even light exposure on all sides. In regions with intense summer sun, provide some afternoon shade to prevent scorching. Supplement with grow lights if natural light is limited, particularly during winter months.
How do I care for Myrtle Spurge?
Myrtle Spurge requires well-draining soil, such as a cactus or succulent mix, to prevent root rot. Water thoroughly when the soil is completely dry, typically every 2-4 weeks, depending on environmental conditions. Provide bright, direct sunlight for at least 6 hours a day; however, protect it from intense afternoon sun in hot climates. Fertilize sparingly, only during the growing season (spring and summer), using a balanced, diluted succulent fertilizer. Prune dead or damaged leaves to maintain its appearance. Be extremely cautious of the milky sap, which can cause skin irritation. Wear gloves when handling. Avoid overwatering, especially during winter dormancy.
How do I propagate Myrtle Spurge?
Myrtle Spurge can be propagated through stem cuttings, leaf cuttings, or offsets. For stem cuttings, allow the cut end to callous over for a few days before planting in well-draining soil. Rooting hormone can aid in the process. Leaf cuttings can be placed on top of well-draining soil and misted occasionally. Offsets, or small plantlets that grow around the base of the mother plant, can be carefully separated and potted individually. Wear gloves when handling cuttings to avoid skin irritation from the sap. Provide bright, indirect light and maintain consistent moisture until roots develop. Propagation is best done during the growing season (spring or summer).
Ornamental Onion
What are the light requirements for Ornamental Onion?
Ornamental Onions require at least 6-8 hours of direct sunlight per day to thrive and produce abundant blooms. Insufficient light can result in weak stems, fewer flowers, and overall poor growth. When grown indoors, place them near a south-facing window where they can receive maximum sunlight exposure. If natural light is limited, supplement with grow lights to ensure adequate illumination. Rotate the plant regularly to ensure even light distribution on all sides. Monitor the plant for signs of light stress, such as pale leaves or elongated stems, and adjust its position accordingly.
How do I care for Ornamental Onion?
Ornamental Onions thrive in well-draining soil and full sun. Plant bulbs in the fall for spring blooms, or in early spring for summer blooms. Water thoroughly after planting and then moderately throughout the growing season, allowing the soil to dry slightly between waterings. Fertilize in early spring with a balanced fertilizer to encourage strong growth and abundant blooms. Deadhead spent flowers to prevent seed production and encourage further blooming. In colder climates, provide winter protection by mulching around the base of the plant. Divide clumps every few years to prevent overcrowding and maintain vigor. With proper care, your Ornamental Onions will provide years of stunning floral displays. Maintain good airflow to prevent fungal diseases.
How do I propagate Ornamental Onion?
Ornamental Onions can be propagated by division, stem cuttings, or keiki (small plantlets that grow on the flower stalk).
Last updated: May 2, 2026 — Plant care data reviewed and verified by our editorial team.