Dallis Grass
Paspalum dilatatum
Dallisgrass
About this plant
Paspalum dilatatum, commonly known as Dallis Grass, is a perennial grass native to South America. It has broad, flat leaves and produces seed heads with multiple branches. It is often used as pasture grass and for erosion control due to its fast growth and tolerance to drought. It can spread quickly and sometimes becomes invasive outside its native range.
Taxonomy
- Genus
- Paspalum
- Family
- Poaceae
- Higher classification
- Poales (order)
- Plant type
- Perennial
- Lifespan
- Perennial
Origin & Distribution
- Native region
- South America
- Distribution
- Native to South America; widely naturalized in North America, Australia, and other warm regions.
Care
- Light preference
- Full sun
- Suitable locations
- Outdoor, Balcony, Greenhouse
- Watering frequency
- Moderate
- Watering interval
- 3–7 days
- Humidity
- Normal
- Minimum
- -5 °C
- Maximum
- 35 °C
- Optimal
- 15-30 °C
- USDA hardiness zones
- 8-11
- Soil pH
- 6.0-7.5 (neutral to slightly acidic)
- Soil type
- well-draining loam or sandy soil
Watering. Water regularly during dry periods but avoid waterlogging. This grass tolerates drought once established but grows best with moderate moisture.
Fertilizing. Apply a balanced fertilizer in early spring to support growth. Additional feeding during the growing season can help maintain vigor, especially in poor soils.
Paspalum dilatatum is a hardy grass that grows quickly and tolerates dry conditions well. It prefers full sun and well-drained soil. It requires minimal maintenance but may need occasional mowing if grown as turf. Overwatering or poor drainage can cause root problems.
Propagation
- Propagation methods
- Seeds, Division
- Care difficulty
- Easy
Ornamental features
- Flowering
- Yes
- Flowering period
- summer
Broad green leaves and branched seed heads that appear in summer.
Toxicity & Safety
- Toxic to humans
- Non-toxic
- Toxic to pets
- Non-toxic
- Weed potential
- Potentially invasive
Non-toxic to humans and pets. Safe to have around children and animals.
Allergy information
- Allergy risk
- Low
- Allergy triggers
- Pollen
- Pollen level
- Moderate
Paspalum dilatatum can produce pollen that may cause mild allergic reactions in sensitive individuals, such as sneezing or itchy eyes. People with grass pollen allergies should be cautious around this plant, especially during its flowering season. To reduce exposure, avoid mowing or disturbing the grass when it is flowering and keep windows closed during high pollen times.
Common problems
Overwatering or poor drainage can lead to root rot. It may become invasive in some areas if not managed properly. Weeds and pests are generally not a major problem.
Uses
Used mainly as pasture grass for livestock, erosion control, and sometimes as a lawn grass in warm climates.
Notes
This grass can spread aggressively in favorable conditions, so regular mowing or trimming may be needed to control its growth. It is not typically grown indoors.