FloraPlus
Home Plant Tools Identify Plant Disease Diagnostic
Tansy plant image
Asteraceae HERB OUTDOOR Placement Primary: Medicinal Ornamental Aromatic Dye Companion

Tansy

Tanacetum vulgare

Identified By Marcs

Tansy is a robust, herbaceous, perennial flowering plant belonging to the aster family, Asteraceae, native to temperate Europe and Asia. It is easily recognized by its bright, button-like yellow flower clusters and deeply divided, fern-like leaves that release a strong, camphor-like scent when crushed. Historically utilized for medicinal, culinary, and preservative purposes, tansy has also found a strong place in companion planting due to its natural pest-repellent properties. However, modern horticulture approaches tansy with caution because it contains volatile oils, particularly thujone, which can be toxic if ingested in large quantities by humans or livestock. Despite these toxicity concerns, it remains a resilient garden addition that thrives in poor soils and full sun.

Also known as: Common Tansy Bitter Buttons Cow Bitter Golden Buttons

Toxicity & Safety

Is Tansy toxic to pets?

Yes, toxic to pets.

Tansy is considered highly toxic to dogs, cats, horses, and livestock. The plant contains a volatile oil called thujone, which can cause severe poisoning when ingested. Symptoms of toxicity in pets include vomiting, violent trembling, rapid heart rate, liver damage, convulsions, and potentially death. Because of these dangerous properties, pets should be strictly kept away from areas where tansy grows, and homeowners should avoid planting it in accessible enclosures.

Is Tansy toxic to humans?

Yes, toxic to humans.

Ingesting tansy or its concentrated essential oils can lead to severe poisoning in humans. The toxic principle is beta-thujone, which is a potent neurotoxin. Consumption can cause severe stomach pain, vomiting, uterine bleeding, kidney and liver damage, rapid pulse, delirium, and fatal convulsions. Historically, tansy extracts were misused to induce abortions, which frequently resulted in fatal poisonings or permanent internal organ damage. Therefore, oral consumption of any part of this plant is strongly discouraged.

Is Tansy safe during pregnancy?

Caution advised during pregnancy.

Tansy is strictly contraindicated during pregnancy and breastfeeding. It has historically been utilized as an abortifacient due to its powerful ability to stimulate uterine contractions. Ingesting even small amounts can trigger premature labor, severe hemorrhaging, or miscarriage. The volatile compounds within the plant easily cross physiological barriers, posing extreme risks to both the developing fetus and the pregnant individual, making it a critical hazard to avoid completely.

Growth & Dimensions

Height 50 - 150 cm
Width 40 - 100 cm
Growth Rate Fast
Care Level Easy
Lifespan Perennial

Ideal Environment

Temperature -25°C - 30°C
Sunlight Hours 6 - 10 hrs/day
Sun Exposure Full sun
Soil pH 6 - 7.5
Watering Interval 7 - 14 days
Humidity 30.00% - 70.00%
USDA Zone 3 - 9

Temperate Europe and Asia

Climate: Thrives in temperate continental and maritime climates characterized by warm summers and cold winters with moderate seasonal rainfall.

Soils: Loam Sand Clay Gravel
Annual Rainfall: 500 - 1200 mm

Native Regions

Europe
Temperate Asia

How to Care for Tansy

How should I handle sunlight requirements?

Tansy thrives best when planted in an area that receives full sun for the majority of the day. Providing at least six hours of direct sunlight ensures vigorous stem growth, healthy leaf development, and abundant production of its distinctive yellow button flowers. While it can tolerate partial shade, insufficient light often results in leggy, weak growth and significantly fewer blooms.

How should I handle watering guidelines?

Once established, tansy is remarkably drought-tolerant. During the first growing season, water deeply and regularly to help establish a strong root system. For mature plants, allow the soil to dry out moderately between watering sessions. Avoid waterlogged or soggy soil conditions, as excessive moisture around the roots can lead to root rot and fungal diseases.

How should I handle soil and fertilization?

Tansy is not demanding regarding soil quality and can easily adapt to poor, sandy, or gravelly soils as long as drainage is adequate. It prefers neutral to slightly alkaline pH levels. Avoid rich, heavily fertilized soils, as excessive nutrients will cause the plant to grow too rapidly, become floppy, and lose its compact, upright form.

How should I handle pruning and maintenance?

Because tansy spreads aggressively via underground rhizomes, it is important to cut back flower heads before they go to seed to prevent unwanted self-seeding across your garden. In late autumn, cut the entire plant down to ground level to tidy up the garden bed and encourage fresh, healthy shoots to emerge vigorously the following spring.

How to Propagate Tansy

How to propagate Tansy by division?

Propagating tansy through root division is a simple and reliable method best performed in early spring or autumn. Carefully dig up a mature, established clump of tansy, making sure to preserve a healthy root system. Using a sharp, clean spade or garden knife, separate the root mass into smaller sections, each containing several robust shoots and healthy roots. Immediately replant these divided sections into prepared garden soil at the same depth they were growing previously, and water them thoroughly to help settle the soil and stimulate new root growth.

How to propagate Tansy by seed?

Growing tansy from seeds is another effective way to establish new plants in your garden. Sow the seeds directly into the garden soil in spring after the danger of hard frost has passed, or start them indoors in seed trays approximately six to eight weeks before the final frost date. Lightly press the tiny seeds into the soil surface, as they require light to germinate effectively. Keep the soil moderately moist until seedlings sprout, which typically occurs within two weeks. Once seedlings are large enough to handle safely, transplant them outdoors with adequate spacing.

Common Diseases & Pests of Tansy

What is Powdery Mildew and how is it treated?

Fungal
Symptoms:

Powdery mildew manifests as a distinct white or gray powdery coating on the surface of tansy leaves and stems. As the fungal infection progresses, infected leaves may yellow, curl, dry out, and eventually drop prematurely from the plant, weakening its overall vitality and aesthetic appeal.

Treatment:

Treat infected plants by removing severely affected foliage immediately to reduce fungal spread. Apply organic fungicidal sprays such as potassium bicarbonate, neem oil, or sulfur-based solutions directly to the affected areas during early morning or late evening hours.

Prevention:

Prevent powdery mildew by ensuring adequate spacing between plants to promote proper air circulation. Always water the base of the plant rather than overhead spraying to keep foliage dry, and plant tansy in a location that receives full sun throughout the day.

What is Root Rot and how is it treated?

Fungal
Symptoms:

Root rot causes the underground roots of the tansy plant to turn brown, mushy, and decay. Above-ground symptoms include sudden wilting, yellowing of leaves, stunted growth, and eventual collapse of the entire stem structure despite adequate soil moisture levels.

Treatment:

Unfortunately, heavily rotted plants cannot be saved and must be discarded completely along with surrounding contaminated soil. For mild cases, gently dig up the plant, trim away decayed roots using sterilized shears, and replant in fresh, fast-draining soil.

Prevention:

Prevent root rot by selecting a planting location with excellent soil drainage. Avoid overwatering and never plant tansy in heavy, compact clay soils that retain excessive moisture around the root zone for prolonged periods.

Properties & Benefits of Tansy

Aromatic Plant

Uses & Health Benefits

What are the benefits of natural pest repellent properties in Tansy?

Tansy has long been valued in companion planting and organic gardening for its potent aromatic qualities. The strong scent produced by its foliage acts as a natural deterrent against various common garden pests, including ants, flies, squash bugs, and fleas. Gardeners frequently plant tansy near vulnerable crops or use dried leaves to create natural sachets that keep insects away from living spaces, reducing the need for harsh synthetic chemical pesticides.

Precautions: The volatile oils can cause skin irritation or allergic contact dermatitis in sensitive individuals when handled without gloves.

Key Nutrients / Compounds

Thujone rich in Variable essential oil compound

OTHER PLANTS

Colchicum

Colchicum

Colchicum is a fascinating genus of perennial cormous plants belonging to the family Colchicaceae. Commonly known as autumn crocus or meadow saffron, they are famous for producing their delicate, goblet-shaped flowers in the autumn without any leaves present. The lush, broad green foliage emerges the following spring, eventually dying back before the blooming cycle repeats in late summer or autumn. While highly prized in ornamental horticulture for bringing vibrant color to the garden when most other flowers are fading, every part of the plant is exceptionally toxic due to the presence of colchicine, requiring careful handling and placement away from children and grazing animals.

Care guide
Bellflower

Bellflower

Bellflowers belong to the genus Campanula, comprising a vast and diverse group of herbaceous plants known for their distinctive bell-shaped flowers, which typically bloom in vibrant shades of blue, purple, pink, and white. These charming and resilient plants are extremely popular in garden landscapes, rockeries, and border plantings across temperate regions. Most species are hardy perennials, though some are annuals or biennials. They generally thrive in moderate climates with well-drained soils and benefit from partial shade to full sun depending on the specific species and regional summer heat intensities.

Care guide
False Castor Oil Plant

False Castor Oil Plant

The False Castor Oil Plant, scientifically known as Jatropha curcas, is a species of flowering plant in the spurge family, Euphorbiaceae. Native to the American tropics, it is now widely cultivated in tropical and subtropical regions worldwide. This robust shrub or small tree is primarily recognized for its drought resistance and the high oil content found within its seeds, which has made it a significant candidate for biofuel production. Despite its numerous industrial applications and traditional medicinal uses, all parts of the plant are highly toxic to humans and animals due to the presence of toxalbumin and other phytotoxins. It features large, lobed green leaves and produces small yellowish-green flowers followed by oval fruits.

Care guide
Velvet Leaf Anthurium

Velvet Leaf Anthurium

Anthurium clarinervium is a breathtaking tropical epiphyte native to the rainforests of southern Mexico. Celebrated primarily for its striking, heart-shaped dark green velvety leaves adorned with prominent, contrasting white or pale green veins, it is a prized specimen for indoor plant enthusiasts. As a member of the Araceae family, it thrives in warm, humid environments with dappled sunlight. Due to its epiphytic nature, it requires an extremely well-aerated, chunky soil mix that mimics its natural tree-dwelling habitat, allowing its thick roots to breathe and prevent root rot while maintaining adequate moisture levels throughout the growing season.

Care guide
Alocasia Polly

Alocasia Polly

Alocasia Polly is a stunning and highly popular tropical indoor foliage plant known for its striking, glossy, dark green leaves adorned with prominent, contrasting white or silvery veins. This compact hybrid features deeply lobed, arrowhead-shaped leaves that give it a unique, almost sculptural appearance resembling an African tribal mask. As an indoor houseplant, it requires careful attention to environmental conditions, particularly regarding humidity, warmth, and moisture levels, making it slightly more challenging for novice gardeners but deeply rewarding for dedicated plant enthusiasts seeking dramatic aesthetic appeal.

Care guide
Eggplant

Eggplant

Eggplant, scientifically known as Solanum melongena, is a tender perennial plant belonging to the nightshade family Solanaceae, typically cultivated as an annual in temperate agricultural zones. Grown primarily for its spongy, absorbent edible fruit, the plant features coarse, often lobed leaves, delicate purple to white flowers, and stems that can sometimes bear prickles. Originating in tropical Asia, particularly India, eggplants require warm climates, abundant sunshine, and rich, well-draining soil to thrive. The fruit comes in a diverse range of shapes, sizes, and colors, stretching from the traditional large, glossy deep purple globe cultivars to elongated Asian types and tiny white or variegated varieties. Nutritionally, eggplants are valued for supplying dietary fiber, potassium, and various antioxidant compounds, making them a popular culinary staple in Mediterranean, Middle Eastern, and Asian cuisines.

Care guide
Okra

Okra

Okra, known scientifically as Abelmoschus esculentus, is a vibrant and versatile warm-season vegetable prized for its edible green seed pods. Cultivated widely in tropical, subtropical, and temperate regions, the plant belongs to the mallow family and features striking hibiscus-like flowers with pale yellow petals and deep red centers. As an agricultural and garden staple, okra thrives in rich, well-draining soils under full sunlight and provides a robust harvest of nutritious pods that are widely utilized in various culinary traditions around the world, particularly in stews, gumbos, and fried dishes, due to its unique thickening properties.

Care guide
Winged Bean

Winged Bean

The winged bean is a tropical legume plant native to New Guinea, highly prized for its exceptional nutritional value and versatility in tropical agriculture. Every part of the plant is edible, including the pods, leaves, flowers, seeds, and tuberous roots. It gets its common name from the distinctive four longitudinal wings with frilly edges that run along the length of the green pods. Thriving primarily in warm, humid climates, this vigorous climbing vine requires strong support structures to maximize pod production and prevent fungal issues caused by ground contact.

Care guide
Cassava

Cassava

Cassava is a woody shrub native to South America of the spurge family, Euphorbiaceae. It is extensively cultivated as an annual crop in tropical and subtropical regions for its edible starchy tuberous root, a major source of carbohydrates. Cassava is remarkably drought-tolerant, capable of surviving in poor soils where many other crops would fail. Its starchy roots can be processed into flour, bread, and tapioca. Despite its agricultural importance, all parts of the plant contain cyanogenic glucosides, which require proper and thorough processing before safe human or animal consumption to prevent severe toxicity and health issues.

Care guide
Crocosmia

Crocosmia

Crocosmia is a stunning genus of perennial cormous flowering plants belonging to the iris family, Iridaceae. Native primarily to the grasslands of South Africa, these vibrant plants are celebrated for their fiery spikes of red, orange, and yellow tubular flowers that bloom brilliantly throughout the mid to late summer months. They possess sword-shaped, pleated green leaves that create an attractive architectural contrast in garden beds and borders. Crocosmia plants are well-loved by gardeners for their resilience, ability to attract pollinators like hummingbirds and bees, and their exceptional performance as long-lasting cut flowers. They thrive in fertile, well-draining soils under full sun to partial shade conditions and multiply rapidly via underground corms.

Care guide
Panda Plant

Panda Plant

The Panda Plant, scientifically known as Kalanchoe tomentosa, is a fascinating and popular succulent native to Madagascar. It is widely celebrated for its thick, velvety, fleshy leaves that feature a soft, silvery-gray coating and charming brownish-black spots along the scalloped margins. This distinctive fuzzy texture helps the plant reduce moisture loss in its native arid habitats by trapping a thin layer of humid air around the leaf surface. As an exceptionally drought-tolerant perennial, the Panda Plant is remarkably well-suited for indoor container gardening, requiring minimal maintenance, bright indirect sunlight, and infrequent watering to thrive successfully in typical household environments.

Care guide
Zebra Haworthia

Zebra Haworthia

The Zebra Haworthia, scientifically known as Haworthiopsis fasciata, is a charming, compact succulent native to South Africa, specifically the Eastern Cape province. It is widely celebrated for its striking dark green leaves adorned with distinctive, raised white horizontal stripes that resemble zebra patterns. Growing in small rosettes, this resilient plant typically reaches a height of 10 to 15 centimeters, making it an ideal choice for windowsills, small apartment spaces, and terrariums. As a succulent, it stores water in its fleshy leaves, allowing it to withstand periods of drought with ease. It is particularly popular among beginner gardeners due to its low maintenance requirements and high tolerance for indoor growing conditions.

Care guide
Tree Aeonium

Tree Aeonium

The Tree Aeonium (Aeonium arboreum) is a striking succulent subshrub native to the Canary Islands, known for its rosette-forming, fleshy leaves and branching woody stems. This architectural plant typically grows up to one to two meters in height, producing large, glossy rosettes that can range in color from vibrant green to deep purple or almost black, depending on the cultivar and sunlight exposure. In winter or spring, mature rosettes produce large, conical panicles of bright yellow, star-shaped flowers. As a popular ornamental plant in Mediterranean and arid gardens, it thrives in mild climates and well-draining soils, requiring minimal water once established. Its ability to withstand coastal conditions makes it a favorite for seaside landscaping, rock gardens, and container planting.

Care guide
Heliotrope

Heliotrope

Heliotrope is a cherished garden perennial grown primarily for its intensely fragrant, vanilla-scented purple or blue flower clusters and rich, dark green foliage. Native to Peru, this charming plant brings both visual elegance and a delightful aroma to outdoor borders, containers, and patios. It thrives best in warm climates with plenty of sunshine and moist, well-draining soil. Gardeners frequently use heliotrope as an annual in cooler temperate regions, appreciating its long blooming season that extends from early summer right through the first autumn frosts. While visually stunning and adored by pollinators like butterflies, all parts of the plant contain pyrrolizidine alkaloids, meaning it is toxic if ingested by pets or humans.

Care guide
Garden Phlox

Garden Phlox

Garden Phlox is a magnificent, classic perennial powerhouse deeply cherished in traditional cottage gardens for its breathtaking, sweetly fragrant blossom clusters that burst into vibrant shades of pink, purple, red, and white during the peak of summer. Reaching impressive heights, this robust plant serves as an exceptional structural element in perennial borders, reliably drawing in a diverse array of essential pollinators such as butterflies and hummingbirds. Originating primarily from the rich woodlands and moist meadows of North America, garden phlox adapts wonderfully to cultivated landscapes provided it receives adequate moisture, fertile soil, and sufficient air circulation to thrive harmoniously.

Care guide
Sweet Alyssum

Sweet Alyssum

Sweet Alyssum is a popular, low-growing, mounding annual plant belonging to the Brassicaceae family. Highly appreciated for its dense carpets of tiny, fragrant white, pink, or purple flowers that emit a sweet, honey-like scent, it is a favorite for garden borders, rockeries, containers, and hanging baskets. This resilient plant attracts a wide array of beneficial insects, including pollinators like bees and butterflies, making it an excellent companion plant for vegetable gardens. Thriving best in cooler weather, Sweet Alyssum is remarkably easy to cultivate from seeds and can bloom continuously from spring until the first heavy frost if properly maintained with occasional trimming. Its compact habit and drought tolerance once established make it an indispensable choice for both novice and experienced gardeners seeking reliable, long-lasting floral displays and wonderful fragrances in their outdoor living spaces.

Care guide
French Marigold

French Marigold

The French Marigold, scientifically known as Tagetes patula, is a popular herbaceous annual flowering plant belonging to the Asteraceae family. Native to Mexico and Central America, it is widely cultivated across the globe for its vibrant, cheerful blooms in shades of yellow, orange, red, and mahogany. Renowned for its pungent, distinct aroma and brightly colored compound flowers, this resilient plant is a favorite in ornamental gardening, companion planting, and border landscaping. It acts as a natural pest deterrent in vegetable gardens, helping to repel nematodes and various harmful insects, making it an invaluable asset for organic gardeners seeking sustainable pest management solutions alongside aesthetic beauty.

Care guide
Pot Marigold

Pot Marigold

Pot Marigold, scientifically known as Calendula officinalis, is a popular and cheerful flowering plant belonging to the daisy family Asteraceae. Native to the Mediterranean region, this hardy annual or short-lived perennial is widely celebrated for its vibrant yellow and orange blossoms that brighten up any garden landscape. Beyond its ornamental appeal, the pot marigold has a rich history in herbal medicine, culinary arts, and cosmetics. Its petals are frequently used to add color to salads, infuse oils, and create soothing salves for skin irritations. Exceptionally easy to grow from seed, it thrives in a variety of soils and full sun, making it a favorite companion plant for vegetable gardens due to its ability to deter certain pests and attract beneficial pollinators.

Care guide
Strawflower

Strawflower

The strawflower, scientifically known as Xerochrysum bracteatum, is a remarkable and popular ornamental plant native to Australia. It is widely celebrated for its uniquely stiff, papery bracts that surround the actual flowers, giving them a dry, straw-like texture that lasts indefinitely even after being cut. This characteristic makes strawflowers an absolute favorite for dried floral arrangements, crafts, and long-lasting bouquets. They thrive in warm climates with plenty of sunshine and well-draining soil, offering a vibrant splash of yellow, red, orange, pink, and white colors throughout the summer and autumn months. As resilient annuals or short-lived perennials in warmer zones, they are remarkably drought-tolerant and easy to grow for both novice and experienced gardeners alike.

Care guide
Love-Lies-Bleeding

Love-Lies-Bleeding

Love-Lies-Bleeding, scientifically known as Amaranthus caudatus, is a remarkable and striking ornamental plant famous for its cascading, rope-like clusters of deep crimson or purplish-red flowers. Native to the tropical regions of the Americas, this annual herb can grow quite tall, creating a dramatic architectural statement in gardens and floral arrangements. The flowers can stretch downwards for up to sixty centimeters, giving the plant its vivid and melancholy common name. It thrives in warm weather, requires plenty of sunlight, and adapts well to a variety of well-drained soils. Beyond its stunning visual appeal, parts of the plant, including the nutritious seeds and leaves, have historically been utilized for culinary purposes by indigenous cultures in South America, making it both a feast for the eyes and a source of sustenance.

Care guide
Statice

Statice

Statice, scientifically known as Limonium sinuatum, is a remarkably popular ornamental plant celebrated for its brightly colored, papery calyces that retain their vibrant hues long after being cut. This makes them an absolute favorite in the floral industry for fresh bouquets as well as dried flower arrangements. Native to the Mediterranean region, statice thrives in coastal environments and poorly fertile soils, showcasing an exceptional resilience to drought and salty conditions. The plant features deeply lobed, basal leaves and produces stiff, winged stems topped with clusters of tiny, delicate flowers. Gardeners appreciate statice for its long blooming season, spanning from late spring straight through the autumn frosts, adding reliable splashes of purple, pink, yellow, white, or blue to garden beds and borders.

Care guide
Baby's Breath

Baby's Breath

Baby's Breath, scientifically known as Gypsophila paniculata, is a popular ornamental flowering plant belonging to the carnation family, Caryophyllaceae. Native to parts of Europe and Asia, it is widely celebrated for its delicate, cloud-like clusters of tiny white or pink flowers that add an ethereal, airy texture to floral arrangements and garden borders. This hardy herbaceous perennial thrives in well-drained, alkaline soils and full sun exposure, making it remarkably drought-tolerant once established. While it is a cherished favorite among florists globally, it can behave as an invasive species in certain agricultural regions due to its prolific seed production and deep taproot system.

Care guide
Sweet William

Sweet William

Sweet William is a popular ornamental garden plant belonging to the Caryophyllaceae family. Renowned for its dense, flat-topped clusters of vibrant flowers that feature shades of red, pink, white, and bicolors, this charming flowering plant is a favorite in traditional and cottage gardens. Typically grown as a biennial or short-lived perennial, Sweet William thrives in cooler temperate climates and is well-appreciated for its delightful, spicy fragrance reminiscent of cloves. It attracts various pollinators, including butterflies and bees, making it a wonderful ecological addition to backyard landscapes. Cultivating Sweet William is relatively straightforward, as it prefers well-drained soils and plenty of sunshine, though it can tolerate partial shade in hotter regions.

Care guide
Foxtail Palm

Foxtail Palm

The Foxtail Palm, scientifically known as Wodyetia bifurcata, is a magnificent and highly sought-after ornamental palm native to the rocky outcrops of Cape Melville in Queensland, Australia. Renowned for its distinctive, bushy fronds that resemble the bushy tail of a fox, this single-trunked palm can reach heights of up to 10 meters in cultivation. It features a smooth, self-cleaning, gray trunk and a striking crownshaft that adds a vibrant tropical elegance to landscapes. Highly adaptable to various tropical and subtropical climates, the Foxtail Palm is exceptionally popular in modern landscaping due to its resilience, striking aesthetic appeal, and relatively fast growth rate under optimal conditions. It thrives in well-drained soils and requires abundant sunshine to showcase its lush green foliage at its absolute best.

Care guide