Hydrangea vs Myrtle Spurge Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Hydrangea
Hydrangea macrophylla
Hydrangea macrophylla is a deciduous shrub known for its large, showy flower heads. Naturally an outdoor plant, it typically grows to 3-6 feet tall and wide. The flower color is pH-dependent, ranging from blue in acidic soils to pink in alkaline soils. White varieties exist as well. People grow hydrangeas for their ornamental value, particularly the vibrant and long-lasting blooms that add color to gardens. While sometimes forced to bloom indoors, they struggle to thrive long-term as houseplants due to high light and humidity requirements.
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.
Quick Plant Comparison
| Feature | Hydrangea | Myrtle Spurge |
|---|---|---|
| Light | Bright, indirect light outdoors. Full morning sun with afternoon shade is ideal. Indoors, requires very bright, indirect light, preferably near a south-facing window. | Full sun to partial shade. Requires at least 6 hours of direct sunlight daily for optimal growth. |
| Watering | Every 2-3 days outdoors during the growing season, less frequently in winter. Indoors, every 5-7 days, depending on humidity and light levels. | Every 2-4 weeks, depending on weather and soil drainage. |
| Humidity | 50-70% | 20-40% |
| Temperature | 16-24°C | 15-25°C |
| Care Level | Expert | Expert |
| Growth Rate | Moderate | Moderate |
| Max Height | Indoors: 1-3 feet (difficult to maintain). Outdoors: 3-6 feet. | 6-12 inches (outdoor) |
| Pet Safety | ❌ Toxic To Pets | ❌ Toxic To Pets |
| Soil | Well-draining, slightly acidic soil rich in organic matter. A mix of peat moss, perlite, and potting soil works well. | Well-draining, sandy or gravelly soil. Avoid heavy clay soils. |
| Beginner Friendly | ❌ No | ❌ No |
| Weekly Maintenance | Outdoors: 30 minutes weekly. Indoors: 1 hour weekly (due to increased monitoring). | 15 minutes monthly (weeding, pruning) |
🔬 Botanical Information — Comparing These Plants
Hydrangea
| Scientific Name | Hydrangea macrophylla |
|---|---|
| Family | Hydrangeaceae |
| Native To | Japan |
| Also Known As | Bigleaf Hydrangea, French Hydrangea, Lacecap Hydrangea, Mophead Hydrangea |
| Leaves | The leaves are large, ovate to elliptic, and coarsely toothed. They are typically dark green and have a slightly leathery texture. Leaf size can range from 4 to 8 inches long. |
| Flowers | Hydrangeas rarely flower indoors unless provided with very specific conditions. Outdoors, they produce large, globe-shaped or flattened flower heads composed of numerous small flowers. The flower color varies depending on the soil pH. |
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. |
📏 Size & Growth — Plant Comparison
Hydrangea
Myrtle Spurge
🌱 Propagation — Comparing Plant Growth
Hydrangea
Methods: Stem cuttings, layering
Difficulty: Moderate
Tips: Take stem cuttings in late spring or early summer. Dip the cut end in rooting hormone and plant in moist potting mix. Keep the cuttings in a humid environment until roots develop.
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.
✨ Benefits & Features — Comparing Plant Value
Hydrangea
The most unique characteristic is the pH-dependent flower color, which allows gardeners to manipulate the blooms from pink to blue. It is also a classic and beloved garden shrub with a long history of cultivation.
- ✓ Adds vibrant color to the garden
- ✓ Creates a classic and elegant aesthetic
- ✓ Can be used in cut flower arrangements
- ✓ Provides a sense of accomplishment for experienced gardeners
- ✓ Offers a unique opportunity to experiment with soil chemistry.
- ⚠️ Toxic to pets
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
📅 Maintenance Schedule — Plant Care Comparison
Hydrangea
Myrtle Spurge
🌞 Light Requirements
Hydrangea
Bright, indirect light outdoors. Full morning sun with afternoon shade is ideal. Indoors, requires very bright, indirect light, preferably near a south-facing window.
Low light tolerant: ❌ No
Myrtle Spurge
Full sun to partial shade. Requires at least 6 hours of direct sunlight daily for optimal growth.
Low light tolerant: ❌ No
💧 Watering Needs
Hydrangea
Water deeply when the top inch of soil feels dry to the touch. Hydrangeas are sensitive to both overwatering and underwatering. Overwatering can lead to root rot, indicated by yellowing leaves and a musty smell. Underwatering causes wilting and dry, crispy leaves. Ensure good drainage.
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.
🌡️ Temperature & Humidity
Hydrangea
Temperature: 16-24°C
Humidity: 50-70%
Myrtle Spurge
Temperature: 15-25°C
Humidity: 20-40%
🤔 Which Plant Is Right For You?
Hydrangea
Hydrangea macrophyllaExperienced gardeners who want to add vibrant color to their outdoor landscape and are willing to provide specific care.
✅ Choose This Plant If...
- You want to experiment with changing the flower color by adjusting soil pH.
- You have a bright, cool location where you can attempt to grow it indoors.
- You are an experienced gardener looking for a rewarding challenge.
- You want to add a classic and elegant touch to your garden.
- You are prepared to provide the high humidity and specific care this plant needs.
❌ Skip This Plant If...
- You are a beginner gardener looking for an easy houseplant.
- You have pets that might ingest the plant.
- You lack a bright, cool location with high humidity.
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.
🎯 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
Hydrangea Care Tips
Hydrangeas are primarily outdoor plants and are challenging to grow indoors. They require very bright light, high humidity, and careful watering. Maintaining the correct soil pH is crucial for flower color. Expect limited success indoors unless you can replicate outdoor conditions.
- Maintain high humidity by misting regularly or using a humidifier.
- Provide bright, indirect light to encourage blooming.
- Water deeply and regularly, especially during hot weather.
- Fertilize in spring with a balanced fertilizer.
- Protect from frost in winter.
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.
⚠️ Common Problems & Solutions — Plant Care Comparison
Hydrangea
Myrtle Spurge
❓ Frequently Asked Questions — Comparing These Plants
Hydrangea
What are the light requirements for Hydrangea?
Hydrangeas generally prefer partial shade, with morning sun and afternoon shade being ideal. Too much direct sunlight can scorch their leaves and fade the blooms, while too little light can result in fewer flowers. East-facing locations are often perfect, providing gentle morning sun.
How do I care for Hydrangea?
Hydrangeas thrive with consistent care. Plant in well-draining soil enriched with organic matter. Water deeply when the top inch of soil feels dry, ensuring good drainage to prevent root rot. Fertilize in early spring with a balanced fertilizer formulated for flowering plants, and again after the first flush of blooms.
How do I propagate Hydrangea?
Hydrangeas can be propagated through several methods.
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).
Last updated: April 28, 2026 — Plant care data reviewed and verified by our editorial team.