Greatleaf Yarrow Achillea grandifolia Friv.
ABOUT
Achillea grandifolia, commonly known as largeleaf yarrow, is a herbaceous perennial plant known for its distinctive foliage and floral characteristics. The appearance of largeleaf yarrow is characterized by its lush, green leaves that are typically broader than those of other yarrow species, hence the name "largeleaf." These leaves are often deeply dissected, giving them a feathery or fern-like texture that adds to the plant's overall visual interest. The flowers of largeleaf yarrow are grouped into large, flat-topped clusters called corymbs, which rise above the foliage on sturdy stems. These flower clusters present an array of tiny, tightly-packed blossoms that can vary in color, typically found in shades of yellow or white. Each individual flower is generally small in size but their collective mass can create a bold display. The blooms are known to attract various pollinators such as bees and butterflies, adding a dynamic aspect to their appearance. Overall, largeleaf yarrow exudes a natural, almost wildflower-like charm. It often gives off a distinctly pleasant aroma as well when the foliage is crushed or brushed against. This plant can be a striking addition to gardens and natural landscapes, offering both visual and aromatic qualities without specific considerations for its size.
About this plant
NamesFamily
Asteraceae
Synonyms
Large-Flowered Yarrow, Great Yarrow
Common names
Achillea grandifolia
ToxicityTo humans
Achillea grandifolia, commonly known as large-leaved yarrow, is not typically considered toxic to humans. However, like many plants, it may cause reactions in some individuals, particularly if they have allergies or sensitivities to the Asteraceae family. Ingesting large amounts of yarrow can potentially lead to increased perspiration, dizziness, or skin irritation. Most people who handle or ingest the plant in moderate amounts do not experience adverse effects. Care should always be taken when handling or using plants for consumption or medicinal purposes, especially by individuals who are pregnant, as yarrow has been traditionally used to induce menstruation and could potentially affect pregnancy.
To pets
Large-leaved yarrow (Achillea grandifolia) is not commonly listed among plants that are toxic to pets such as dogs and cats. However, individual pets may have sensitivities or allergic reactions to plants that are generally considered non-toxic. If a pet ingests large amounts of yarrow, it might experience mild gastrointestinal upset, including vomiting or diarrhea. As a general precaution, it's advisable to monitor pets around plants and keep any plants known to be toxic well out of their reach. If you suspect your pet has ingested a harmful plant or is showing symptoms of poisoning, it is recommended to consult a veterinarian promptly.
CharacteristicsLife cycle
Perennials
Foliage type
Deciduous
Color of leaves
Green
Flower color
Varies
Height
2-3 feet (0.6-0.9 meters)
Spread
2-3 feet (0.6-0.9 meters)
Plant type
Herb
Hardiness zones
3-9
Native area
Balkans
Benefits
General Benefits- Attracts Pollinators: Achillea grandifolia, commonly known as large-leaved yarrow, is known to attract beneficial insects such as butterflies and bees, which help in the pollination of gardens and ecosystems.
- Drought Resistance: Once established, large-leaved yarrow is tolerant of drought, making it suitable for xeriscaping and low-water gardens.
- Landscape Aesthetics: With its large, showy flower clusters and attractive foliage, large-leaved yarrow adds visual interest and aesthetic value to gardens and landscapes.
- Soil Erosion Control: Due to its extensive root system, it can help stabilize soil and prevent erosion on slopes and banks.
- Low Maintenance: Large-leaved yarrow requires minimal care once established, making it a practical choice for gardeners looking for low-maintenance plant options.
- Companion Planting: It can be used in companion planting to enhance the growth of other plants and repel harmful pests naturally.
- Habitat for Wildlife: Provides food and habitat for various species of wildlife, including birds and small mammals.
- Culinary Use: Leaves of large-leaved yarrow may be used in moderation as a flavoring agent in certain traditional culinary practices, typically as a bitter herb.
- Craft and Ornamental Use: The dried flower heads can be used in floral arrangements and crafts, maintaining their shape and color well when dried.
- Ecological Contribution: As a native species in some regions, it contributes to local biodiversity, supporting the ecosystem's overall health.
Medical Properties- Anti-inflammatory: Achillea grandifolia has been used to reduce inflammation.
- Antiseptic: The plant has properties that help in preventing the growth of microbes.
- Astringent: It may be used to contract skin cells and other body tissues.
- Carminative: It has been known to help in relieving flatulence.
- Diaphoretic: Achillea grandifolia can induce sweating and may help in fever management.
- Haemostatic: The plant's use may aid in stopping bleeding.
- Vulnerary: It has been applied to help heal wounds and sores.
Air-purifying QualitiesThis plant is not specifically known for air purifying qualities.
Other Uses- Achillea grandifolia, commonly known as Great Yarrow, can be used as a natural dye, providing a range of colors from yellow to green depending on the mordant used.
- The flowers and leaves of Great Yarrow can be incorporated into potpourri mixtures, contributing to the aromatic quality of the blend.
- In companion planting, Great Yarrow can enhance the growth and flavor of certain herbs and vegetables when planted nearby.
- The plant is sometimes used in ornamental garden designs for its feathery foliage and clusters of white flowers.
- Great Yarrow can serve as a natural fertilizer when added to compost due to its high levels of essential nutrients.
- The dried stems of Great Yarrow have been used in traditional handcrafts, such as basket weaving, due to their durability.
- Used as a floral food for livestock, Great Yarrow can offer certain nutritional benefits when mixed with feed in moderate amounts.
- The robustness of the plant allows it to act as a natural erosion control agent on slopes and banks.
- Great Yarrow can be planted to attract beneficial insects like bees and butterflies, promoting biodiversity in the garden.
- When dried and burned, the plant can act as a natural insect repellent, helping to keep pests away from outdoor living spaces.
Interesting Facts
Feng ShuiThe Achillea, commonly known as yarrow, can be used in Feng Shui to enhance the energy of the health, love, and marriage guas due to its associations with healing and balance.
Zodiac Sign CompitabilityThe Achillea, or yarrow, is not used in astrology practice.
Plant Symbolism- Healing: Achillea grandifolia Friv., commonly known as "Yarrow," shares the symbolic meaning of healing with other plants in the Achillea genus. This association comes from the mythological figure Achilles, who is said to have used yarrow to treat the wounds of his soldiers in the Trojan War.
- Courage: Because of its connection with the warrior Achilles, yarrow can symbolize courage and heroism in the face of adversity.
- Protection: Yarrow is often thought to ward off negative energies and is sometimes used in amulets or sachets for protection.
- Love Divination: In folklore, yarrow has been used in rituals to foretell one’s romantic future, making it a symbol of love divination.
- Perseverance: Due to its hardy nature and ability to thrive in challenging conditions, yarrow represents perseverance and the ability to withstand hardships.
WaterThe Giant Hyssop should be watered deeply but infrequently to encourage deep root growth, typically once a week, depending on the climate and the soil moisture level. Provide about 1 inch of water each week, which equates to roughly 0.6 gallons per square foot. During the growing season, increase the frequency to twice a week if the weather is very hot or dry. Always allow the soil to dry out slightly between waterings to prevent root rot. It's best to water this plant in the morning to reduce evaporation and give the foliage time to dry out, which helps prevent disease.
LightThe Giant Hyssop thrives in full sun, which means it does best when it receives at least 6 to 8 hours of direct sunlight per day. Place the plant in a location where it can get unobstructed sunlight throughout the day for optimal growth and bloom production. Avoid shaded spots as this can lead to leggy growth and fewer flowers.
TemperatureThe Giant Hyssop prefers a temperate climate and can tolerate a temperature range from as low as 5°F to as high as 80°F without damage. The ideal temperature for promoting healthy growth and flowering lies between 60°F and 70°F. Take measures to protect the plant during extreme temperatures, applying mulch or coverings as needed.
PruningPruning the Giant Hyssop is essential to maintain its shape, encourage new growth, and enhance blooming. Cut back the spent flower stems after blooming and prune lightly in early spring to promote bushier growth. Pruning can be done annually or biannually, always ensuring to remove any damaged or diseased foliage as it appears. The best time for a major prune is late winter or early spring, just before new growth starts.
CleaningAs needed
SoilThe best soil mix for Yarrow (Achillea grandifolia) should be well-draining and fertile with a pH range of about 5.5 to 7.0. A mixture of garden soil, compost, and sharp sand or perlite is ideal to encourage good drainage and provide ample nutrients.
RepottingYarrow (Achillea grandifolia) does not require frequent repotting and can thrive in the same container for several years. It should be repotted only when the root system outgrows the current pot, which is typically every 2-3 years.
Humidity & MistingYarrow (Achillea grandifolia) is tolerant of a wide range of humidity conditions and does well in average room humidity. High humidity is not necessary for this plant, and it can thrive in dry conditions as well.
Suitable locationsIndoor
Place Yarrow in a sunny spot, water sparingly, provide good air circulation.
Outdoor
Plant Yarrow in full sun, well-draining soil, water moderately.
Hardiness zone
3-9 USDA
Life cycleThe life cycle of Achillea grandifolia Friv., commonly known as Giant Yarrow, commences with seed germination which occurs in early spring when temperatures are suitable and soil moisture is adequate. The seedlings emerge and develop into a rosette of leaves at the soil surface; this is the vegetative growth phase where the plant invests in photosynthesis and root development. As the Giant Yarrow matures, it enters the reproductive stage in the late spring to summer, sending up tall flowering stalks that bear clusters of small, typically white or pale pink flowers. These flowers are pollinated by insects, leading to seed formation within the flower heads. Once seeds are mature, they are dispersed by wind, animals, or simply drop to the ground near the parent plant. The plant may die back in winter, especially in colder climates, but can re-sprout from its root system or the seeds may overwinter and germinate with the return of favorable conditions.
PropogationPropogation time
Spring to early summer
Achillea grandifolia Friv., commonly known as large-flowered yarrow, is typically propagated through division, which is the most popular method for this perennial plant. Division involves separating an established clump into smaller parts that can be transplanted. It is best carried out in the early spring or fall when the plant is not in active growth. To propagate by division, dig up the parent plant ensuring you have a good amount of roots attached to each division. Each section should have at least one shoot and a portion of the root system. Replant the divisions immediately at the same soil depth they were originally growing, spacing them about 18 inches (approximately 45 centimeters) apart to allow for adequate growing room. Water the new transplants thoroughly to help establish them in their new location.
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