Asarum vs Button Bush Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Asarum
Asarum canadense
Asarum canadense, or Canadian Wild Ginger, is a rhizomatous herbaceous perennial typically found in moist, deciduous woodlands. It's known for its kidney-shaped to heart-shaped, velvety green leaves that grow in pairs from creeping rhizomes. The plant produces a single, bell-shaped, brownish-purple flower near the ground in spring, often hidden beneath the foliage. While called 'ginger', it's not related to culinary ginger and should not be consumed as a substitute. It is primarily grown as a groundcover in shaded gardens for its attractive foliage and ability to suppress weeds. It is NOT suited for indoor growing.
Button Bush
Cephalanthus occidentalis
Buttonbush is a deciduous shrub or small tree typically found in wet habitats like swamps, floodplains, and along streams. It grows to a height of 3-12 feet. Its most distinctive feature is its spherical flower heads, resembling buttons, composed of numerous tiny, creamy-white flowers. These flowers attract pollinators. While primarily an outdoor plant, it is sometimes grown indoors as a novelty, but requires very specific conditions to thrive. People grow it for its unique appearance and wildlife value.
Quick Plant Comparison
| Feature | Asarum | Button Bush |
|---|---|---|
| Light | Full to partial shade. Cannot tolerate direct sunlight. | Full sun to partial shade outdoors; requires very bright, direct light indoors (at least 6 hours of direct sunlight daily). |
| Watering | Every 3-7 days, depending on weather and soil drainage. | Outdoors: Dependent on rainfall. Indoors: Every 2-5 days, depending on light and humidity. |
| Humidity | 50-70% | 50-70% |
| Temperature | 10-24°C | 15-27°C |
| Care Level | Expert | Expert |
| Growth Rate | Moderate | Moderate |
| Max Height | 0.15-0.3 meters (outdoors) | Indoors: 1-2 meters (if conditions are ideal). Outdoors: 1-4 meters. |
| Pet Safety | ❌ Toxic To Pets | ❌ Toxic To Pets |
| Soil | Rich, well-draining soil with plenty of organic matter. A mix of compost, leaf mold, and garden soil is ideal. | Well-draining, moisture-retentive soil. A mix of potting soil, peat moss, and perlite is suitable for indoor containers. |
| Beginner Friendly | ❌ No | ❌ No |
| Weekly Maintenance | 10 minutes weekly (weeding, watering) | 30 minutes weekly |
🔬 Botanical Information — Comparing These Plants
Asarum
| Scientific Name | Asarum canadense |
|---|---|
| Family | Aristolochiaceae |
| Native To | Eastern North America |
| Also Known As | Canadian Wild Ginger, Broad-leaved Asarum, Indian Ginger |
| Leaves | The leaves are kidney-shaped to heart-shaped, typically 10-20 cm wide, with a velvety texture and a deep green color. They have prominent veins and a slightly ruffled edge. |
| Flowers | The plant produces a single, bell-shaped flower near the ground in spring. The flower is typically brownish-purple and often hidden beneath the foliage. It rarely flowers indoors. |
Button Bush
| Scientific Name | Cephalanthus occidentalis |
|---|---|
| Family | Rubiaceae |
| Native To | Eastern and Southern North America, Central America, Cuba |
| Also Known As | Buttonbush, Honey Balls, Globe Flower, Button Willow |
| Leaves | The leaves are opposite or whorled, ovate to lanceolate, 5-15 cm long, and have a glossy green color. They turn yellow in the fall before dropping. |
| Flowers | Outdoors, it produces spherical flower heads composed of numerous tiny, creamy-white flowers in summer. Indoors, flowering is rare. |
📏 Size & Growth — Plant Comparison
Asarum
Button Bush
🌱 Propagation — Comparing Plant Growth
Asarum
Methods: Division, Seed
Difficulty: Moderate
Tips: Divide rhizomes in early spring or fall. Sow seeds in fall for germination the following spring. Ensure good drainage and consistent moisture.
Button Bush
Methods: Seed, stem cuttings, layering
Difficulty: Moderate
Tips: Take stem cuttings in late spring or early summer. Rooting hormone can improve success. For seeds, cold stratification is required for several months before sowing.
✨ Benefits & Features — Comparing Plant Value
Asarum
The plant's unique bell-shaped flowers are often hidden beneath the foliage. It is also known for its ginger-like aroma when the rhizomes are crushed, despite not being related to true ginger.
- ✓ Provides groundcover in shady areas
- ✓ Attracts pollinators
- ✓ Deer resistant
- ✓ Erosion control on slopes
- ✓ Adds visual interest with unique foliage
- ⚠️ Toxic to pets
Button Bush
The spherical flower heads are very distinctive and attract a variety of pollinators. It's a native plant that supports local ecosystems.
- ✓ Attracts pollinators when grown outdoors.
- ✓ Unique and interesting appearance.
- ✓ Provides a connection to nature.
- ✓ Can be a conversation starter.
- ✓ Offers a challenge for experienced gardeners.
- ⚠️ Toxic to pets
📅 Maintenance Schedule — Plant Care Comparison
Asarum
Button Bush
🌞 Light Requirements
Asarum
Full to partial shade. Cannot tolerate direct sunlight.
Low light tolerant: ❌ No
Button Bush
Full sun to partial shade outdoors; requires very bright, direct light indoors (at least 6 hours of direct sunlight daily).
Low light tolerant: ❌ No
💧 Watering Needs
Asarum
Keep soil consistently moist, but not waterlogged. Water when the top inch of soil feels dry. Overwatering can lead to root rot, while underwatering will cause the leaves to wilt and brown.
Button Bush
Keep soil consistently moist, especially during the growing season. Buttonbush is highly tolerant of wet conditions. Overwatering indoors can lead to root rot if drainage is poor. Allow the top inch of soil to dry slightly before watering indoors. Signs of underwatering include wilting and leaf drop. Signs of overwatering include yellowing leaves and a musty smell.
🌡️ Temperature & Humidity
Asarum
Temperature: 10-24°C
Humidity: 50-70%
Button Bush
Temperature: 15-27°C
Humidity: 50-70%
🤔 Which Plant Is Right For You?
Asarum
Asarum canadenseGardeners looking for a shade-loving groundcover in woodland settings.
✅ Choose This Plant If...
- You have a shady woodland garden and need a groundcover
- You want a deer-resistant plant
- You appreciate unique foliage textures
- You want to attract pollinators to your garden (though flowers are hidden)
- You are looking for a native plant to support local ecosystems.
❌ Skip This Plant If...
- You have pets that might ingest the plant
- You do not have a suitable outdoor location with shade and moist soil
- You are looking for a low-maintenance indoor plant.
Button Bush
Cephalanthus occidentalisExperienced gardeners who want a unique plant and can provide the specific conditions it needs.
✅ Choose This Plant If...
- You have a very bright, sunny indoor location and are willing to supplement with grow lights.
- You are an experienced gardener looking for a unique challenge.
- You are fascinated by native plants and want to try growing one indoors.
- You are prepared to provide consistent moisture and high humidity.
- You understand the toxicity to pets and can keep it away from them.
❌ Skip This Plant If...
- You have pets that might ingest the plant.
- You cannot provide very bright, direct sunlight.
- You are a beginner gardener looking for an easy-care plant.
🎯 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
Asarum Care Tips
Asarum canadense is primarily an outdoor plant and is very difficult to grow indoors. It requires specific shade and moisture conditions that are hard to replicate indoors. It also spreads via rhizomes, which would quickly outgrow a container. Toxicity to pets is a major concern.
- Ensure excellent drainage to prevent root rot
- Provide consistent moisture, especially during dry periods
- Apply a layer of mulch to retain moisture and suppress weeds
- Divide rhizomes every few years to prevent overcrowding
- Monitor for slugs and snails and take appropriate action
Button Bush Care Tips
Buttonbush is primarily an outdoor plant and is challenging to grow indoors. It requires very bright light, consistent moisture, and high humidity. It's toxic to pets. Indoor success is limited, and it may not flower indoors. Regular pruning is needed to maintain shape.
- Provide at least 6 hours of direct sunlight daily, supplementing with grow lights if necessary.
- Maintain consistently moist soil, but avoid overwatering indoors.
- Increase humidity by misting regularly or using a humidifier.
- Fertilize regularly during the growing season.
- Prune annually to maintain shape and encourage bushier growth.
⚠️ Common Problems & Solutions — Plant Care Comparison
Asarum
Button Bush
❓ Frequently Asked Questions — Comparing These Plants
Asarum
What are the light requirements for Asarum?
Asarum requires shade to partial shade. Direct sunlight can scorch its delicate leaves, leading to browning and stunted growth. Ideal placement is under the canopy of trees or on the north side of a building, where it receives filtered sunlight or dappled shade. Avoid locations that receive intense afternoon sun. If growing Asarum indoors, place it near a north-facing window or use sheer curtains to diffuse the light. Insufficient light can result in leggy growth and reduced flowering. Observe the plant’s foliage for signs of stress, such as pale or yellowing leaves, and adjust the light accordingly. Remember that the intensity of light changes throughout the year, so monitor your Asarum’s light exposure and adjust its placement as needed.
How do I care for Asarum?
Asarum thrives in shady locations with well-draining, humus-rich soil. Water regularly, especially during dry periods, keeping the soil consistently moist but not waterlogged. Fertilize sparingly in early spring with a balanced, slow-release fertilizer to encourage healthy growth and blooming. Avoid direct sunlight, which can scorch the leaves. Mulch around the plants to retain moisture and suppress weeds. Prune away any dead or damaged foliage to maintain appearance and prevent disease. Asarum prefers cool temperatures and high humidity. Provide good air circulation to prevent fungal diseases. Repot container-grown plants every few years in spring. Monitor for pests such as slugs and snails and treat accordingly. With proper care, Asarum will reward you with its beautiful foliage and unique flowers.
How do I propagate Asarum?
Asarum is best propagated by division in early spring or fall. Carefully dig up the plant and divide the rhizomes into sections, ensuring each section has roots and foliage. Replant the divisions in well-draining, humus-rich soil. Keep the soil consistently moist until the plants are established. Stem cuttings are not a reliable method for Asarum propagation. Keiki, or plantlets, do not naturally form on Asarum. Division is the most successful method for propagating this plant. Ensure the divisions are planted at the same depth as the original plant. Mulch around the newly planted divisions to retain moisture and suppress weeds. Water thoroughly after planting.
Button Bush
What are the light requirements for Button Bush?
Button Bush thrives in full sun to partial shade. Full sun, meaning at least 6 hours of direct sunlight per day, promotes the most abundant flowering and the densest foliage. However, in hotter climates, some afternoon shade can be beneficial to prevent leaf scorch. Partial shade, meaning 4-6 hours of direct sunlight, is also acceptable, especially in warmer regions.
How do I care for Button Bush?
Button Bush thrives in consistently moist to wet conditions, so regular watering is essential, especially during dry periods. Aim for at least 1-2 inches of water per week. Plant in full sun to partial shade, ideally in a location that receives at least 6 hours of sunlight per day. Button Bush tolerates a wide range of soil types, but prefers slightly acidic, well-draining soil.
How do I propagate Button Bush?
Button Bush can be propagated through several methods:
Last updated: May 9, 2026 — Plant care data reviewed and verified by our editorial team.