Rough horsetail (Equisetum hyemale)
Also known as: Scouringrush horsetail, Snake grass
Rough horsetail (Equisetum hyemale) is a robust, evergreen perennial ideal for wetland areas. It grows aggressively, spreading through spores rather than flowers. Thriving in both full sun and partial shade, it's also resistant to pests. This plant is excellent for erosion control and can add a unique touch to water gardens. Typically, it reaches a height of 61 to 91 cm.
In This Article
Attributes of Rough horsetail
Lifespan
Perennial
Plant Type
Fern
Plant Height
1 m
Spread
30 cm to 1.8 m
Leaf Color
Green
Flower Size
N/A (it doesn't produce traditional flowers)
Flower Color
Yellow Brown
Images of Rough horsetail
Quickly Identify Rough horsetail
1
Hollow, jointed stems with pronounced ridges and black bands at nodes.
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Silica-infused, evergreen stems reaching up to 6 feet (180 cm) in height.
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Sparse, black toothed leaves forming a sheath-like structure at stem nodes.
4
Distinctive segmented appearance due to straight, unbranched stems with nodes.
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Fertile stems bear spore-bearing cones with sharp points for reproduction.
Scientific Classification of Rough horsetail
Phylum
Vascular plants
Class
Equisetopsida
Order
Horsetails
Family
Horsetail
Genus
Horsetails
Species
Rough horsetail
Planting and Growing of Rough horsetail
Care Difficulty
Easy
Watering Schedule
Every 2 days
Sunlight Requirements
Partial sun
Sunshine Duration
4-6 hours
Ideal Temperature
50-77℉
Soil Type
Potting Mix, Peat Mix
Soil pH
6.5-7.5
Fertilizer Type
Balanced
Pruning Season
Spring, Summer
Pruning Area
Branches, Leaves
Pruning Frequency
2 times a year
Repotting Season
Spring
Pot Type
Plastic, Ceramic
How to Water Rough horsetail?
Equisetum hyemale, also known as horsetail, thrives in moist conditions, mimicking its natural habitat. Ensure the soil remains damp by watering approximately 500 ml per session, enough to moisten the soil thoroughly but not so much as to cause waterlogging.
What are the symptoms of an underwatered Rough horsetail?
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What should I do if my Rough horsetail is not getting enough water?
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What are the symptoms of an overwatered Rough horsetail?
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How to save an overwatered Rough horsetail?
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What Are the Sunlight Requirements for Rough horsetail?
Equisetum hyemale thrives best in partial sun to full sun environments, where it can enjoy the benefits of natural bright light. This exposure supports its structural growth, leaf health, and enhances its ornamental qualities.
What is the best lighting for Equisetum hyemale?
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How to ensure Equisetum hyemale gets enough light?
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What benefits does proper lighting provide?
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What Is the Ideal Temperature Range for Rough horsetail?
The ideal temperature range for Equisetum hyemale, also known as horsetail, is between 50°F and 77°F. This range provides a conducive environment for optimal growth and metabolic activities. Consistent temperatures in this range help the plant maintain vibrant foliage and robust growth. In these ideal conditions, Equisetum hyemale can thrive and maintain its unique structure.
What Soil is Best for Rough horsetail?
Equisetum hyemale thrives in soil that retains moisture efficiently. This requirement ensures the plant receives ample hydration, promoting healthy growth and vibrant foliage. The plant benefits from soil rich in organic matter and nutrients. This supports robust growth and the characteristic tall and sturdy stems of Equisetum hyemale. While it loves moisture, Equisetum hyemale also needs soil with good drainage to prevent waterlogging. Proper drainage prevents root rot and keeps the plant healthy.
How to Fertilize Rough horsetail?
Equisetum hyemale, commonly known as horsetail, benefits from a balanced nutrient supply. Use liquid fertilizer at a diluted concentration of about 1/4 the normal strength. During active growth phases in spring and summer, this ensures that the plant receives enough nutrients without overwhelming its root system.
How to Prune Rough horsetail?
Before pruning, carefully inspect the plant to identify any stems that appear brown, brittle, or unhealthy. These should be prioritized for removal during the pruning process. When cutting a stem, make your cut just above a node. This encourages new growth from the node, helping the plant maintain its structural integrity and encouraging bushier regrowth. After pruning, collect all cuttings and dispose of them properly. This prevents any potential spread of disease and keeps the growing area tidy, further promoting a healthy growth environment.
How to Propagate Rough horsetail plant?
1
Begin by selecting a healthy Equisetum hyemale plant in early to late spring. Water the plant thoroughly a day before division to ease the process. Use a garden spade to carefully dig around the plant, loosening the soil and exposing the rhizomes for division.
2
Gently lift the plant from the ground and inspect the rhizomes. Use clean pruning shears to cut sections of the rhizomes, ensuring each section has roots and a few stem nodes. Avoid damaging the delicate roots during this step as they are crucial for reestablishing the plant.
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Prepare the planting site by loosening the soil and improving drainage if necessary. Plant the divisions at the same depth they were growing originally, spacing them to allow for growth. Firm the soil around the plants and water them lightly to settle the soil.
How to Repot Rough horsetail plant?
1
Equisetum hyemale needs repotting when its container becomes cramped, roots start circling around the pot edges, or growth noticeably slows. This usually occurs every one to two years. Choose a time in early spring or autumn when the plant is not in its vigorous growth phase. Signs that repotting is needed include poor water retention and roots peeking out from the drainage holes.
2
Select a pot that is only slightly larger than the current one—about 2 inches wider in diameter. This prevents excess soil from retaining too much moisture. A pot with drainage holes is critical to avoid water-logging. The material is less critical, but terracotta can aid in moisture absorption, creating a healthier environment for Equisetum hyemale.
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The ideal soil mix for repotting Equisetum hyemale is sandy soil combined with peat. This combination ensures good drainage while retaining adequate moisture, mimicking its natural habitat. The sandy component prevents compaction, allowing roots to breathe, and peat provides necessary organic matter, supporting robust growth.
Toxicity of Rough horsetail
Is Rough horsetail toxic to humans?
Rough horsetail may pose toxicity risks if consumed in excessive quantities, primarily due to its thiaminase content, which can interfere with vitamin B synthesis in the body, potentially leading to a deficiency of this essential vitamin. When ingested in small amounts, rough horsetail is generally not regarded as toxic, particularly for individuals who maintain a diet rich in vitamin B. Additionally, this plant possesses diuretic properties, promoting the elimination of water from the body through urination; overconsumption can lead to significant dehydration. It is strongly advised to completely avoid consuming rough horsetail during pregnancy, given the lack of sufficient evidence regarding its safety, as well as for individuals who are suffering from alcoholism, due to the associated risk of thiamine deficiency. Those who are allergic to carrots or nicotine, as well as individuals with diabetes or low potassium levels, should exercise particular caution.
WARNING
The judgment on toxicity and danger is for reference only. We DO NOT GUARANTEE any accuracy of such judgment. Therefore, you SHALL NOT rely on such judgment. It is IMPORTANT TO SEEK PROFESSIONAL ADVICE in advance when necessary.
