Switchgrass Panicum virgatum 'Hänse Herms'
ABOUT
The plant known as 'Hänse Herms' is a cultivar of switchgrass. It displays a robust, upright growth habit with a profusion of narrow, green leaves that exhibit a lush, arching demeanour as they mature. Changing with the seasons, the foliage undergoes a transformation, showcasing stunning red and orange tones in fall, creating a warm, inviting display in the landscape. During summer, the plant produces airy, open flower panicles which rise above the foliage, adding a delicate, textured effect. These blooms eventually give way to seeds, extending visual interest into the wintertime. The switchgrass cultivar is well-regarded for its resilience and the lively movement it brings to a garden setting with its tall, elegant stems that sway gracefully in the breeze.
About this plant
NamesFamily
Poaceae
Synonyms
Switchgrass, Wand Panic Grass, Tall Panic, Wild Redtop, Thatchgrass, Blackbent
Common names
Panicum virgatum.
ToxicityTo humans
Switchgrass is a cultivar of Panicum virgatum known generally as 'Hänse Herms'. This ornamental grass is not commonly known to be poisonous to humans. Ingesting switchgrass, in general, isn't associated with serious toxicity or symptoms of poisoning. However, as with many plants, individuals may have allergies or sensitivities that could cause mild discomfort if they were to ingest or handle the plant.
To pets
Switchgrass is not commonly considered to be toxic to pets. It is a cultivar known as 'Hänse Herms' of the Panicum virgatum species. Pets that ingest switchgrass typically do not show signs of poisoning or serious illness purely due to the plant's toxicity. However, ingestion of plant material can sometimes lead to gastrointestinal upset in pets, not specifically due to toxicity but as a reaction to consuming non-digestible matter.
CharacteristicsLife cycle
Perennials
Foliage type
Deciduous
Color of leaves
Green
Flower color
Varies
Height
4-5 feet (1.2-1.5 meters)
Spread
2-3 feet (0.6-0.9 meters)
Plant type
Herb
Hardiness zones
4-9
Native area
North America
Benefits
General Benefits- Low maintenance - This plant requires minimal care once established, making it ideal for gardeners with limited time.
- Drought tolerant - It is highly resistant to drought, which can be very useful in areas with water restrictions or low rainfall.
- Erosion control - The deep roots of Switchgrass help stabilize soil and prevent erosion.
- Wildlife habitat - Provides shelter and food for birds and other wildlife, enhancing biodiversity.
- Fall interest - Exhibits vibrant autumn colors that add aesthetic value to landscapes in the fall season.
- Winter interest - Sturdy stems and seed heads remain upright in winter, offering a scenic view against the snow.
- Bioenergy crop - Recognized as an important crop for producing biofuel, contributing to renewable energy solutions.
- Tolerant of poor soils - Can grow in a variety of soil types, including sandy and clay soils, which makes it versatile for different landscapes.
- Ornamental appeal - As an ornamental grass, it offers a visually appealing texture and movement to garden designs.
Medical PropertiesThis plant is not used for medical purposes.
Air-purifying QualitiesThis plant is not specifically known for air purifying qualities.
Other Uses- Erosion Control: Switchgrass can be planted on slopes and water edges to prevent soil erosion due to its extensive root system.
- Thatching Material: The dry stems of switchgrass can be used as a natural material for thatching roofs in rustic or traditional building techniques.
- Animal Bedding: Dried switchgrass can be used as bedding for livestock due to its absorbency and softness.
- Sound Insulation: The dense growth habit of switchgrass can act as a natural sound barrier when planted along highways or between properties.
- Biofuel Production: Switchgrass has potential as a biomass crop for producing ethanol and other biofuels, thanks to its high energy yield per acre.
- Biodegradable Mulch: Shredded switchgrass can be used as a biodegradable mulch in gardens to suppress weeds and retain soil moisture.
- Craft Material: Dried stems and seed heads of switchgrass can be used in floral arrangements or as a material for making crafts such as baskets.
- Wildlife Habitat: The dense clumps of switchgrass provide shelter and nesting material for birds and small mammals.
- Green Manure: When plowed back into the soil, switchgrass can act as a green manure, adding organic matter and nutrients to the earth.
- Phytoremediation: Switchgrass can be used to remove or stabilize pollutants in contaminated soils, helping to reclaim and improve these areas.
Interesting Facts
Feng ShuiThe Switchgrass is not used in Feng Shui practice.
Zodiac Sign CompitabilityThe Switchgrass is not used in astrology practice.
Plant Symbolism- Resilience: Prairie Switchgrass is known for its ability to thrive in harsh conditions, symbolizing the capacity to endure and recover from challenges.
- Adaptability: Its wide-ranging habitat and tolerance for various soil types represents adaptability and versatility in life.
- Growth: As a perennial that regrows annually, it signifies new beginnings and continuous personal growth.
- Sustainability: The use of Switchgrass in biofuel production and ecological restoration projects symbolizes sustainable practices and environmental consciousness.
- Balance: Its role in its natural ecosystem, providing habitat and soil conservation, embodies the concept of balance and coexistence with nature.
WaterThe switchgrass 'Hänse Herms' should be watered deeply to encourage root growth but let the soil dry out between watering sessions. During the first growing season, water the plant once a week with about 1 inch of water to help establish an extensive root system. Once established, switchgrass is drought-tolerant and may only need additional water during prolonged dry spells. Mature plants typically require less frequent watering, perhaps once every two to three weeks with the same amount, depending on the climate and soil conditions.
LightSwitchgrass 'Hänse Herms' thrives in full sun conditions and will do best when planted in a location that receives at least 6 hours of direct sunlight daily. It can tolerate partial shade, but full sun exposure maximizes its growth and flowering potential. Ensure that the plant is positioned away from taller structures or plants that may cast significant shade.
TemperatureSwitchgrass 'Hänse Herms' is quite hardy and can withstand a wide range of temperatures, generally surviving winter lows down to -20°F and summer highs well above 100°F. The ideal temperature range for the plant is between 75°F and 85°F, which promotes active growth and robust health.
PruningTo maintain switchgrass 'Hänse Herms' in its best form, prune it once a year in late winter or early spring before new growth begins. Cut the dried foliage back to about 4 inches above the ground to stimulate fresh growth and maintain a tidy appearance. This annual pruning also helps to manage the size of the plant and encourages healthy, vigorous growth in the upcoming season.
CleaningAs needed
SoilSwitchgrass (Panicum virgatum 'Hänse Herms') thrives in a well-draining soil mix with a pH ranging from 4.5 to 7.4. A mixture containing loam, sand, and some organic matter such as compost will support healthy growth. Water retention should be moderate, avoiding over-saturation.
RepottingSwitchgrass is a perennial grass and typically does not require repotting. It is planted and allowed to grow undisturbed, dividing only when necessary for propagation or to manage its size.
Humidity & MistingSwitchgrass prefers moderate humidity levels consistent with outdoor environments. It is highly adaptable and does not require specific humidity control when grown outside.
Suitable locationsIndoor
Keep in bright light, ensure pot has drainage, water sparingly.
Outdoor
Full sun, well-draining soil, tolerates drought and cold.
Hardiness zone
4-9 USDA
Life cycleThe life cycle of Panicum virgatum 'Hänse Herms', commonly known as switchgrass, starts with seed germination in the spring, once the soil temperatures are consistently warm. Young seedlings emerge and develop a network of roots and shoots in their growth phase during late spring to early summer. Throughout the summer, the plant matures and forms tall, stiff stems with broad leaves, and then it produces airy, reddish-pink flower panicles by late summer. As autumn approaches, the flowers are pollinated and develop into small seeds that are dispersed by wind or wildlife. In the fall, the plant's foliage turns to a striking orange or copper color, contributing to the landscape's seasonal beauty, before entering dormancy in winter, where it conserves energy and resources. The plant will remain dormant through the cold months, until the following spring when the cycle begins anew with fresh growth from the existing root system.
PropogationPropogation time
Spring-Early Summer
Propogation: Panicum virgatum 'Hänse Herms', well-known as Switchgrass, is commonly propagated through division, a method best performed in the spring as the plant emerges from dormancy or in the late fall after the growing season ends. To propagate by division, carefully dig up an established clump of Switchgrass, ensuring a substantial root ball is intact. Then, using a sharp spade or knife, divide the clump into smaller sections, each with a part of the root system and several shoots. These sections should be immediately replanted at the same soil depth they were originally growing, spaced about 18 to 24 inches apart for adequate room for growth. Water the new plantings thoroughly to help establish roots in their new location, providing the equivalent of 1 inch (25.4 mm) of water per week if rainfall is insufficient. This method proves to be effective as it maintains the vigor of the plant and allows for rapid establishment in the landscape.
