Bulbous Oat Grass Arrhenatherum elatius var. bulbosum 'Variegatum' (v)
ABOUT
Arrhenatherum elatius var. bulbosum 'Variegatum', commonly known as the variegated bulbous oat grass, is a visually striking ornamental grass with a standout appearance. It is characterized primarily by its slender, arching leaves that have a distinctive coloration. Each leaf prominently features a creamy white or silvery-white stripe running along its length, contrasting sharply with the surrounding bright green. This variegation gives the foliage a light and airy appearance, adding visual texture and interest to garden spaces. The leaves themselves are flat and may have a slightly rough texture to the touch. During the growing season, the variegated bulbous oat grass produces flowering stems that top the foliage and bear small, inconspicuous flowers. These flowers are usually not the main attraction, as the real interest lies in the beautiful striped foliage which tends to draw the eye throughout the seasons. Overall, the variegated bulbous oat grass is notable for its elegant, bicolored leaves that can brighten up any space with their striking variegation.
About this plant
NamesFamily
Poaceae.
Synonyms
Bulbous Oat Grass, Variegated Bulbous Oat Grass, Variegated Tall Oat Grass, Variegated Onion Couch.
Common names
Arrhenatherum tuberosum (Cosson & Durieu) K.Richt., Avena elatior L., Avena bullata Darbyshire & Pavlick, Arrhenatherum elatius (L.) P.Beauv. ex J.Presl & C.Presl, Holcus avenaceus Salisb., Avena elatius (L.) Mert. & W.D.J.Koch.
ToxicityTo humans
The plant commonly known as bulbous oat grass (Arrhenatherum elatius var. bulbosum 'Variegatum') is not widely recognized as poisonous to humans. There is limited information available regarding its toxicity, and it generally isn't listed among the plants of concern for human poisoning. However, as with many ornamental plants, it is not intended for consumption, and ingesting any part of the plant may cause discomfort or an adverse reaction due to individual sensitivities or the presence of saponins and other irritating compounds. In the rare case that someone ingests bulbous oat grass and experiences symptoms such as gastrointestinal discomfort, it is advisable to consult a medical professional.
To pets
The plant commonly known as bulbous oat grass (Arrhenatherum elatius var. bulbosum 'Variegatum') is not typically known to be toxic to pets. It is not highlighted on the lists of poisonous plants for pets such as dogs and cats. However, individual pets might have sensitivities, and eating ornamental plants can sometimes cause mild stomach upset or other digestive issues. If your pet has consumed a significant amount of bulbous oat grass and is showing symptoms of illness (like vomiting, diarrhea, or changes in behavior), it is best to contact your veterinarian for advice.
CharacteristicsLife cycle
Perennials
Foliage type
Deciduous
Color of leaves
Variegated
Height
2 feet (60 cm)
Spread
1 foot (30 cm)
Plant type
Grass
Hardiness zones
5
Native area
Europe
Benefits
General Benefits- Ornamental Appeal: Variegated Oat Grass adds visual interest to gardens with its brightly variegated leaves that feature green and white stripes.
- Low Maintenance: It is relatively easy to care for, requiring minimal upkeep once established.
- Climate Tolerant: This plant is adaptable to a variety of climates, making it a robust choice for different garden zones.
- Erosion Control: The grass has a dense root system that can help stabilize soil and prevent erosion.
- Attracts Wildlife: Provides a habitat for beneficial insects and can attract birds that feed on the seeds.
- Seasonal Interest: Offers year-round interest, particularly in regions with milder winters, and has an attractive seed head display in late summer.
- Drought Tolerance: Once established, it can withstand periods of low water, making it suitable for xeriscaping.
Medical PropertiesThis plant is not used for medical purposes.
Air-purifying QualitiesThis plant is not specifically known for air purifying qualities.
Other Uses- Tubers from bulbous oat grass are sometimes used as a food source for livestock, particularly pigs, in times of forage scarcity.
- These tubers have also been experimented with as a potential biofuel source due to their high carbohydrate content.
- The tall and attractive foliage of bulbous oat grass is sometimes used as a filler in floral arrangements and bouquets.
- In craftwork, the dried stems can be used for making eco-friendly baskets or as a natural decorative element in home decor.
- The grass can be planted on slopes and banks for soil stabilization and to prevent erosion, taking advantage of its extensive root system.
- As a unique ornamental grass, it provides visual interest in home gardens throughout the year, even in winter when its variegated leaves contrast with snow.
- Gardeners may utilize the plant as a living barrier or border because of its dense and clumping growth habit.
- Bulbous oat grass is sometimes used in outdoor educational settings, like school gardens, to teach about different types of grasses and variegation.
- In largescale landscaping, this grass is used to create textural contrast with other perennial plants and grasses due to its distinct striped leaves.
- Photographers and artists may use this grass as a subject or backdrop due to its unique appearance and the way it catches light.
Interesting Facts
Feng ShuiThe plant name is not used in Feng Shui practice.
Zodiac Sign CompitabilityThe plant name is not used in astrology practice.
Plant Symbolism- Resilience: Arrhenatherum elatius var. bulbosum 'Variegatum', commonly known as the variegated bulbous oat grass, reflects resilience as it is a hardy perennial that can survive in various conditions.
- Adaptability: The plant's ability to thrive in a range of environments symbolizes adaptability, representing the capacity to prosper in diverse situations.
- Growth: As a grass species that grows well and can spread, it represents growth, both in a literal sense as well as metaphorically in personal or professional development.
WaterThe Bulbous Oat Grass should be watered deeply but infrequently to encourage a strong root system, typically once a week providing about one inch of water each time. During the hotter and drier summer months, water usage might increase to twice per week. Ensure the soil has good drainage to prevent waterlogging. Adjust the watering schedule based on rainfall; during periods of heavy rain, additional watering may not be necessary. It's best to water early in the morning to reduce evaporation and allow the foliage to dry out over the course of the day.
LightBulbous Oat Grass thrives in full sun to partial shade conditions. An ideal spot would be where the plant can benefit from at least 4 to 6 hours of sunlight daily. Avoid deep shade areas, as this can lead to weak growth and fewer variegations in the foliage.
TemperatureBulbous Oat Grass prefers temperatures between 60°F and 75°F for optimal growth. It is cold hardy and can withstand temperatures down to around 20°F but should be protected or covered if temperatures are expected to fall below this point. High temperatures above 85°F may stress the plant, so provide some afternoon shade in hotter climates.
PruningPrune Bulbous Oat Grass to maintain shape and encourage new growth; this is best done in early spring before new growth starts. Cut back the dead foliage to a few inches above the ground. Pruning once a year is typically sufficient. Removing spent flower stems after blooming can also help to prevent self-seeding and encourage more foliage growth.
CleaningAs needed
SoilThe best soil mix for the bulbous oat grass (most common name) is a well-drained, loamy soil enriched with organic matter. The ideal soil pH for bulbous oat grass should be slightly acidic to neutral, ranging from about 6.0 to 7.0.
RepottingBulbous oat grass, being a hardy perennial, typically doesn't need frequent repotting. Repotting can be done every 2-3 years or as necessary when it outgrows its container or the soil becomes depleted.
Humidity & MistingBulbous oat grass prefers average humidity conditions and is tolerant of varied atmospheric moisture levels, making it adaptable to most ambient humidity conditions found in temperate regions.
Suitable locationsIndoor
Use well-drained soil and provide ample light.
Outdoor
Plant in well-drained soil, full sun to part shade.
Hardiness zone
4-9 USDA
Life cycleThe life cycle of Arrhenatherum elatius var. bulbosum 'Variegatum', commonly known as bulbous oat grass, begins with seed germination, typically taking place in the spring when temperatures become conducive for growth. Once sprouted, the seedling develops into a clump of variegated green and white foliage, entering the vegetative stage where it focuses on root and foliage growth. During the mature phase in late spring to early summer, bulbous oat grass produces tall, erect flowering stems topped with oat-like spikelets, signaling its reproductive stage. After pollination and seed set, the plant enters a period of dormancy, with the grass often dying back partially or completely in regions with colder winters. However, the plant has bulbous structures at the base of the stem, which help it survive adverse conditions; it resumes growth from these structures or new seeds the following spring. Multiple-year individuals can live in a perennial cycle, regenerating from their bulbous bases, while annual individuals complete their life cycle within one growing season.
PropogationPropogation time
Spring to Summer
The most popular method of propagation for Arrhenatherum elatius var. bulbosum 'Variegatum', commonly known as bulbous oat grass, is by division. This grass is best propagated in the spring just as new growth begins. To do so, dig up an established clump and gently separate the crowns, ensuring that each section has a piece of the root system. Replant these divisions promptly, spacing them approximately 12 to 18 inches apart (which converts to about 30 to 45 centimeters), to give each new plant sufficient room to grow. It's important to water these new divisions thoroughly after planting to help establish them. This simple vegetative method is effective because it maintains the variegation of the parent plant and ensures a true to type specimen.
