Onion grass (Xyris pauciflora)

Onion grass

Onion grass is named pauciflora, which means few-flowered in Latin because of the single small yellow flower that appears at the end of each of the plant's few stems. This plant flowers in fall so this is the best time to seek it out in low to medium altitude subtropical habitats like valleys, fields, swamps, and similar damp locations.

Scientific classification

Species

Onion grass (Xyris pauciflora)

Grasses, sedges and allies

Instantly identify plants with a snap

Snap a photo for instant plant ID, gaining quick insights on disease prevention, treatment, toxicity, care, uses, and symbolism, etc.

Download the App for Free

Perennial

Lifespan

Herb

Plant Type

Yellow

Flower Color

Evergreen

Leaf type

Images of Onion grass

Distribution of Onion grass

Distribution Map

Onion grass is natively found in tropical and subtropical regions of Asia, ranging from the southeast to the Himalayan foothills. Its presence is noted in broad geographic areas such as the Malay Archipelago, Indo-China, and along certain parts of the Himalayas. It does not have a notable introduced range outside of its native locales, thereby maintaining a distribution primarily within Asian ecosystems.

Native

Cultivated

Invasive

Introduced

No species reported

Discover plant distribution and habitat

Gain insights into where plants thrive and how they adapt, helping you identify, cultivate, and protect them with essential information on habitats, distribution maps, and climate trends.

Download the App for Free

Care Guide for Onion grass

Every week

Water

Full sun

Sunlight

15 - 35 ℃

Ideal Temperature

Water: Onion grass thrives in humid environments, absorbing moisture effectively. It requires weekly watering to maintain its lush appearance. As an evergreen, it retains foliage year-round and relies on consistent hydration for optimal health.

Fertilize: Optimal growth of onion grass requires careful fertilization using balanced nutrients, applied quarterly at moderate rates. Adjust quantities during spring and summer growth, and always water after fertilizing to distribute nutrients and prevent root burn, enhancing onion grass's health and longevity.

Pruning: Onion grass features grass-like leaves and yellow flowers, thriving with minimal pruning. Prune in early to late spring to promote healthy growth, enhance vigor, and prevent disease. Use clean, sharp tools for best results, as regular pruning encourages dense foliage, making onion grass an attractive garden addition.

Propagation: Onion grass thrives in moist, acidic soils and prefers sunny habitats. Propagation occurs through cuttings with at least one node, placed in peat and perlite for rooting. Use a plastic cover for humidity. Gradually acclimate young plants before transplanting.

Get tips and tricks for your plants.

Keep your plants happy and healthy with our guide to watering, lighting, feeding and more.

Download the App for Free

Learn More About Onion grass

How to Transplant

How to Prune

How to Grow and Care

Plant disease auto-diagnose & prevention

AI-powered plant doctor helps you diagnose plant problems in seconds.

Download the App for Free