Technical sheet and botanical description of horsetail
Horsetail, Also known as horsetail o Equisetum, is a genus of perennial plants belonging to the family Equisetaceae. Although there are different species, such as Equisetum arvense y Equisetum hyemale, they all share morphological characteristics y essential physiologicalThis plant is easily recognizable by its growth vertical, its stems hollow and articulated, and for lacking true flowers and leaves.
- Common name: Horsetail, horsetail, wall rush
- Scientific name: Equisetum spp.
- Family: Equisetaceae
- Origin: Various temperate regions of Europe, Asia, North and South America
- Maximum height: Between 60 cm and 1 meter (some species may vary)
- Ideal location: Water gardens, pond edges, wet areas, non-draining pots
Its structure in the form of tube, similar to bamboo, branches only in mature stems, while younger ones have a simple, elongated appearance. Its stems are rich in silica, which gives them rigidity and a texture rough feature.

Main characteristics and curiosities of the horsetail
La Horse tail It is considered one of the oldest plants on the planet, with origins dating back to the age of the dinosaurs. It is a living fossil which still preserves the method of reproduction by spores, similar to ferns. It lacks flowers and seeds, which differentiates it from most current plants.
It is characterized by:
- Vertical and rapid growth, with segmented stems and secondary branches from the second year
- Hollow structure, which makes it light and resistant
- Intense green color which provides an elegant and modern look, ideal for separating environments in gardens, terraces and waterfronts
- Invasive trend under favorable conditions, so it is essential to control its expansion by pruning
- Great adaptability to poor soils and adverse conditions, including waterlogged soils and shady environments
In young stages, the shoots do not present branches and are easily differentiated from adult stems by their length and simplicity.
Medicinal properties and chemical composition
One of the most relevant aspects of the horsetail is its mineral-rich composition, highlighting the silicon’s most emblematic landmarks, the potassium, calcium, magnesium and other trace elements. Its silica content is especially high, reaching a 3% of the dry weight of the plant, making it a popular choice for strengthen connective tissues, nails, hair and skin.
Its active compounds include:
- Mineral salts: silica (in the form of soluble organic silicate), potassium chloride
- Flavonoids and saponins: with antioxidant and diuretic action
- Tannins and vitamin C: contribute to its anti-inflammatory and healing potential
El silicon It promotes the production of collagen and elastin, improving joint flexibility and bone strength. In addition, the potassium it provides contributes to muscle contraction and proper heart function.

Horsetail uses
- Medicinal application: It is used in traditional herbal medicine to treat urinary tract inflammation, urinary tract infections, kidney stones, rheumatism, osteoporosis, tendonitis, gout, edema, and as an adjuvant in bone consolidation.
- Aesthetic care: Its high mineral content contributes to strengthening nails and hair, and it is widely used in cosmetics and hair lotions. You may also be interested in learning about Caring for Hyssopus officinalis to complement your knowledge of aromatic and medicinal plants.
- Topical use: It provides healing, antihemorrhagic and astringent effects in external applications and sitz baths.
- Organic gardening: Its extract is used as natural fungicide and insecticide, protecting plants against fungi such as rust, monilia, peach mottling and leprosy, in addition to repelling pests.
For use in home remedies, The infussion It is the most common form, although it is also found in powder, syrup, cream, and even tablet forms. A decoction can also be prepared to spray directly onto crops affected by pests or fungal diseases.
Essential care for growing horsetail

Light and location
This plant thrives in places of semi-shadow, although many species tolerate direct sunlight if the humidity is sufficient. It is ideal for pond edges, water garden margins, or shady locations with high ambient humidity. It can be grown in pots, but it is essential that do not have drainage holes to retain the necessary water.
Temperature
Horsetail adapts well to different temperatures, being resistant to both cold and heat. It prefers mild temperatures, between 15°C y 25°C. Intense cold can slow its growth, but rarely damages the Meeting structure of the plant.
Irrigation and humidity
El watering should be frequent, always keeping the substrate moist and never letting it dry out completely. If the plant is in a pot, it is recommended to place a saucer with several centimeters of water at the base to ensure the continuous hydration of the roots. It is a perfect option for waterlogged soils and even for irrigation systems. phytodepuration in ponds.
Type of substrate and fertilizer
The substrate must be rich in organic matter and with good moisture retention. Although it is tolerant of poor soils, its development improves if compost or well-rotted manure is added. After pruning, it is advisable to fertilize with slow release fertilizers rich in nitrogen, phosphorus and potassium to stimulate vigorous sprouting.
Pruning and growth control
La annual pruning It is essential to prevent uncontrolled proliferation of the plant, especially in small spaces. It should never be pruned flush: the ideal is eliminate up to 70% of shoots and preserve the remaining 30%. This technique promotes vitality and density without compromising the health of the plant.

Reproduction of the horsetail
Horsetail reproduction can be carried out by:
- Mat division: Extract portions of the plant along with its roots and transplant them to new locations or containers
- Sporulation: The sporangia located at the tip of the stems release spores that, when germinating in a humid environment, give rise to new plants, a process similar to that of ferns.
Division is the simplest and quickest method in home gardening, while reproduction through spores is more common in natural environments or for experimental purposes.

Prevention and ecological treatments: use in agriculture
Horsetail is valued in organic farming for its potential to strengthen the defenses of other plants, enhance remineralization and act against problematic fungi. The extract is generally prepared by decoction (50g of dried plant in 5 liters of boiling water for one hour) and is used diluted to 20% in preventive sprays from spring to summer.
In combination with other plant extracts, such as nettle and comfrey, revitalizes the soil and strengthens plants. There are specific formulas to strengthen leaves and improve the garden's immunity.
Contraindications and precautions in the use of horsetail

Despite its natural origin, horsetail should be consumed responsibly. It is not recommended to consume it internally for more than a month without a break, and it is contraindicated in cases of:
- Pregnancy and breastfeeding
- Small children
- People with kidney or heart failure or hypokalemia
- Patients taking diuretics, antihypertensives, antidiabetics, lithium, or antiretrovirals
- People with vitamin B1 deficiency (may contain thiaminase) should consult a specialist.
In some cases, it can cause gastrointestinal discomfort, especially in people with gastritis. If you have any questions or are taking medication, a prior medical consultation is essential.
Frequently Asked Questions About Ponytail
- Is it easy to grow? Yes, it only requires humidity and indirect light; it's perfect for beginners and humid spaces.
- Does it work for all gardens? It is best suited to humid environments, but, if well controlled, can thrive in containers and dry gardens with adequate watering.
- Does it require special maintenance? Annual pruning and expansion control are necessary to prevent it from encroaching on the space intended for other plants.

Horsetail is a versatile, functional and decorative option, appreciated for its resistance and usefulness in ecological gardening as well as for its health and beauty applications. With its easy care and ability to adapt to different conditions, it's an ideal plant for both water gardens and pots on terraces or well-lit interiors. Taking advantage of its properties and monitoring its development will allow you to enjoy all its benefits responsibly and safely.