Barrenwort vs Tansy Plant Comparison
Compare these two plants side by side — care needs, key differences, and which is right for your home.
Barrenwort
Epimedium spp.
Epimedium, commonly known as barrenwort, is a genus of rhizomatous herbaceous perennial plants. They are valued for their attractive foliage, delicate spring flowers, and tolerance of dry shade. The leaves are typically compound, with heart-shaped leaflets, and often have interesting textures and colors, including bronze, red, and green. The flowers are small and spurred, resembling tiny bishops' hats or fairy wings. Epimedium is primarily grown as a ground cover in shady gardens, providing year-round interest and suppressing weeds. It is not naturally an indoor plant.
Tansy
Tanacetum vulgare
Tanacetum vulgare, commonly known as tansy, is a perennial herbaceous plant with a distinctive aromatic scent. It typically grows to a height of 0.5 to 1.5 meters. The plant features erect stems with fern-like, deeply divided leaves. It produces clusters of button-like, yellow flowers in late summer. Tansy is primarily an outdoor plant, valued for its insect-repelling properties and historical medicinal uses. It is not typically grown indoors due to its need for full sun and its potential toxicity. People grow it outdoors in gardens for its ornamental value and purported pest control benefits.
Quick Plant Comparison
| Feature | Barrenwort | Tansy |
|---|---|---|
| Light | Partial to full shade. Avoid direct sunlight, especially during the hottest part of the day. | Full sun (at least 6 hours of direct sunlight per day) |
| Watering | Every 1-2 weeks, depending on soil and climate conditions. | Every 1-2 weeks, depending on weather and soil drainage |
| Humidity | 30-60% | 30-50% |
| Temperature | 10-24°C | 15-25°C |
| Care Level | Expert | Expert |
| Growth Rate | Moderate | Fast |
| Max Height | 20-45 cm | N/A (Primarily outdoor plant) |
| Pet Safety | ❌ Toxic To Pets | ❌ Toxic To Pets |
| Soil | Well-draining soil rich in organic matter. A mix of garden soil, compost, and perlite is suitable. | Well-draining soil, such as a sandy loam |
| Beginner Friendly | ❌ No | ❌ No |
| Weekly Maintenance | 5 minutes weekly (mostly for watering and occasional pruning) | 5 minutes weekly (outdoor) |
🔬 Botanical Information — Comparing These Plants
Barrenwort
| Scientific Name | Epimedium spp. |
|---|---|
| Family | Berberidaceae |
| Native To | Asia, particularly China, Korea, and Japan; some species from Southern Europe |
| Also Known As | Barrenwort, Bishop's Hat, Fairy Wings, Horny Goat Weed |
| Leaves | The leaves of Epimedium are typically compound, with heart-shaped leaflets that are often leathery in texture. Leaf color varies depending on the species and cultivar, ranging from green to bronze, red, or purple. Some varieties have variegated foliage. The leaves are usually 5-10 cm long. |
| Flowers | Epimedium rarely flowers indoors. Outdoors, it produces delicate, spurred flowers in spring. The flowers are small, typically less than 2.5 cm across, and come in a variety of colors, including white, yellow, pink, and purple. They are often described as resembling tiny bishops' hats or fairy wings. |
Tansy
| Scientific Name | Tanacetum vulgare |
|---|---|
| Family | Asteraceae |
| Native To | Europe and Asia |
| Also Known As | Tansy, Common Tansy, Bitter Buttons, Cow Bitter, Mugwort |
| Leaves | The leaves of tansy are alternate, deeply divided, and fern-like. They are dark green in color and have a slightly bitter taste. |
| Flowers | Tansy produces clusters of button-like, yellow flowers in late summer. The flowers are arranged in flat-topped corymbs. |
📏 Size & Growth — Plant Comparison
Barrenwort
Tansy
🌱 Propagation — Comparing Plant Growth
Barrenwort
Methods: Division, Seed
Difficulty: Moderate
Tips: Divide established clumps in early spring or fall. Ensure each division has healthy roots and shoots. Sow seeds in a cold frame in the fall.
Tansy
Methods: Seed, Division, Root cuttings
Difficulty: Easy
Tips: For seeds, sow in spring or fall. For division, separate rhizomes in spring or fall. Root cuttings can be taken in late fall or early spring.
✨ Benefits & Features — Comparing Plant Value
Barrenwort
Epimedium is known for its unique spurred flowers and attractive foliage, which often changes color throughout the seasons. Its ability to thrive in dry shade makes it a valuable ground cover option for challenging garden areas. The plant's rhizomatous growth habit allows it to spread and form a dense mat, suppressing weeds.
- ✓ Provides ground cover in shady areas
- ✓ Deer resistant
- ✓ Attracts pollinators
- ✓ Adds visual interest with unique foliage and flowers
- ✓ Drought tolerant once established
- ⚠️ Toxic to pets
Tansy
Tansy is known for its strong aromatic scent and insect-repelling properties. It contains thujone, a compound that is both toxic and responsible for its characteristic odor.
- ✓ Natural insect repellent
- ✓ Aromatic foliage adds fragrance to the garden
- ✓ Attracts beneficial insects
- ✓ Low maintenance once established
- ✓ Historically used for medicinal purposes
- ⚠️ Toxic to pets
📅 Maintenance Schedule — Plant Care Comparison
Barrenwort
Tansy
🌞 Light Requirements
Barrenwort
Partial to full shade. Avoid direct sunlight, especially during the hottest part of the day.
Low light tolerant: ✅ Yes
Tansy
Full sun (at least 6 hours of direct sunlight per day)
Low light tolerant: ❌ No
💧 Watering Needs
Barrenwort
Water thoroughly when the top inch of soil feels dry. Avoid overwatering, as this can lead to root rot. During the dormant season (winter), reduce watering frequency.
Tansy
Water thoroughly when the top inch of soil is dry. Avoid overwatering, as this can lead to root rot. Allow the soil to dry out slightly between waterings. Signs of underwatering include wilting leaves, while signs of overwatering include yellowing leaves and a soggy soil.
🌡️ Temperature & Humidity
Barrenwort
Temperature: 10-24°C
Humidity: 30-60%
Tansy
Temperature: 15-25°C
Humidity: 30-50%
🤔 Which Plant Is Right For You?
Barrenwort
Epimedium spp.Gardeners looking for a low-maintenance ground cover for shady areas.
✅ Choose This Plant If...
- You need a shade-tolerant ground cover that is deer resistant.
- You appreciate plants with interesting foliage and delicate flowers.
- You want a low-maintenance plant that can suppress weeds.
- You have a dry, shady area in your garden where other plants struggle.
- You are looking for a plant with medicinal properties (though consult a professional).
❌ Skip This Plant If...
- You have pets that might ingest the plant.
- You are looking for a plant that thrives indoors without specialized care.
- You live in a very hot, sunny climate.
Tansy
Tanacetum vulgareExperienced gardeners looking for a low-maintenance, insect-repelling plant for their outdoor garden.
✅ Choose This Plant If...
- You want a natural insect repellent in your garden.
- You appreciate plants with historical uses.
- You have a sunny outdoor space.
- You are an experienced gardener.
- You want a low-maintenance perennial.
❌ Skip This Plant If...
- You have pets that might ingest the plant.
- You lack a sunny outdoor space.
- You are a beginner gardener.
🎯 Quick Verdict
⚡ Key Differences Between These Plants
Barrenwort has moderate growth, while Tansy grows fast.
💡 Pro Tips For Comparing These Plants
Barrenwort Care Tips
Barrenwort is primarily an outdoor plant best suited for shady gardens. While it can be grown indoors, it requires very specific conditions (cool temperatures, high humidity, and shade) and is unlikely to thrive long-term. Maintaining proper humidity and preventing root rot are key challenges.
- Plant in well-draining soil to prevent root rot.
- Provide consistent moisture, especially during dry periods.
- Mulch around the base of the plant to retain moisture and suppress weeds.
- Divide established clumps every few years to rejuvenate the plant.
- Protect from harsh afternoon sun to prevent leaf scorch.
Tansy Care Tips
Tansy is primarily an outdoor plant and is difficult to grow indoors due to its high light requirements. It needs full sun and well-draining soil. It is also toxic to pets, requiring careful placement in gardens. Indoor cultivation is not recommended.
- Plant in well-draining soil to prevent root rot.
- Provide full sun for optimal growth and flowering.
- Cut back after flowering to prevent self-seeding.
- Monitor for pests and diseases regularly.
- Avoid planting near areas where pets or children may ingest the plant.
⚠️ Common Problems & Solutions — Plant Care Comparison
Barrenwort
Tansy
❓ Frequently Asked Questions — Comparing These Plants
Barrenwort
What are the light requirements for Barrenwort?
Barrenwort prefers partial to full shade. While some morning sun can be beneficial, especially in cooler climates, avoid exposing it to direct afternoon sunlight, which can scorch the leaves. Dappled shade, such as that found under trees, is ideal. The intensity of light can affect the plant’s foliage color; more shade may result in deeper green leaves, while brighter indirect light can enhance the bronze or reddish hues in some varieties. Observe your plant’s foliage for signs of stress, such as pale or yellowing leaves, which may indicate too much light. Consider the location of your Barrenwort in relation to the sun’s path throughout the day to ensure it receives adequate shade protection.
How do I care for Barrenwort?
Barrenwort thrives in partial to full shade, requiring protection from harsh sunlight, especially during the hottest part of the day. Plant in well-draining soil rich in organic matter. Water regularly during the first growing season to establish a strong root system; after that, it is relatively drought-tolerant. Fertilize in early spring with a balanced, slow-release fertilizer to promote healthy growth and abundant flowering. Prune away any dead or damaged foliage in late winter or early spring before new growth emerges. Mulch around the plants to retain moisture, suppress weeds, and regulate soil temperature. Divide established clumps every few years to rejuvenate the plants and prevent overcrowding. Monitor for pests such as aphids and spider mites, and treat as needed with insecticidal soap. Barrenwort is generally low-maintenance and disease-resistant.
How do I propagate Barrenwort?
Barrenwort can be propagated by division, a relatively simple method. In early spring or fall, carefully dig up an established clump and divide it into smaller sections, ensuring each section has roots and foliage. Replant the divisions in well-draining soil and water thoroughly. Stem cuttings are possible but more challenging. Take semi-hardwood cuttings in late spring, dip them in rooting hormone, and plant them in a moist potting mix. Keep the cuttings humid and warm until they root. Keiki formation is not a typical method of propagation for Barrenwort. Root division is the most reliable way to produce new plants.
Tansy
What are the light requirements for Tansy?
Tansy thrives in full sun, requiring at least 6 hours of direct sunlight each day to promote healthy growth and abundant blooms. An east- or south-facing window is ideal when growing indoors. Insufficient light can result in leggy growth, reduced flowering, and pale foliage. If natural light is limited, supplement with a grow light to provide the necessary intensity. Rotate the plant regularly to ensure even exposure to light on all sides. Avoid placing Tansy in excessively shaded areas, as this can weaken the plant and make it more susceptible to pests and diseases.
How do I care for Tansy?
Tansy requires well-draining soil and prefers a sunny location with at least 6 hours of direct sunlight per day. Water thoroughly when the top inch of soil feels dry, allowing excess water to drain away. Fertilize monthly during the growing season (spring and summer) with a balanced liquid fertilizer diluted to half strength. Prune regularly to encourage bushier growth and remove spent flowers. Maintain moderate humidity levels. Provide adequate air circulation to prevent fungal diseases. Repot every 1-2 years as needed, using a slightly larger pot. Protect from frost in colder climates. Monitor for pests such as aphids and spider mites, and treat accordingly. Avoid overwatering, which can lead to root rot. Ensure good drainage to prevent waterlogged soil.
How do I propagate Tansy?
Tansy can be propagated through division, stem cuttings, or seeds. For division, carefully separate the root ball of a mature plant into smaller sections, ensuring each section has roots and foliage. Replant each section in a separate pot with well-draining soil. For stem cuttings, take a 4-6 inch cutting from a healthy stem, remove the lower leaves, and place the cutting in water or directly into moist soil. Keep the soil consistently moist until roots develop. Seeds can be sown directly into the garden in spring or started indoors 6-8 weeks before the last frost. Keep the soil moist and provide adequate light until germination. Transplant seedlings outdoors after the risk of frost has passed. Rooting hormone can be used to encourage quicker root development for stem cuttings.
Last updated: May 4, 2026 — Plant care data reviewed and verified by our editorial team.