Thuarea involuta
🍃leaf (1)
🌸flower (1)
🌿habit (1)

Thuarea involuta

Kuroiwa Grass · Tropical beach grass · Beachgrass

Tier 2 Difficulty: easy Water: low Light: full_sun
Temperature
20–37 °C
Soil pH
5–7
Hardiness
Zone 10–12
0
Observations
2

Care Guide

💧 Water
☀️ Light Full sun

Kuroiwa grass is a perennial herbaceous plant that favors sunny, open habitats and is commonly found in meadows and grasslands. It prefers full sun but can also tolerate partial sun.

Ideal: Full sun
FAQ
What are the sunlight requirements for Kuroiwa grass?

Kuroiwa grass, also known by its botanical name Thuarea involuta, thrives best in conditions that meet specific sunlight requirements. For optimal growth, it needs 'Full sun' which is defined as receiving above 6 hours of sunlight daily. However, it can also tolerate 'Partial sun' conditions, meaning it can grow with about 3-6 hours of sunlight. It's crucial to observe the way sunlight shifts throughout your garden to find the ideal spots that offer the right mix of light and shade. This consideration helps ensure your Kuroiwa grass remains healthy and happy.

🌡️ Temperature 20–37.8°C

Kuroiwa grass comes from tropical areas, where the climate is generally warm and humid. Therefore it is well adapted to high temperatures and humidity. It dislikes sudden temperature changes and prefers a stable thermal environment, so avoiding temperature fluctuations indoors is important. It typically does not tolerate cold and requires higher temperatures to grow. If the environmental temperature falls too low, the plant may stop growing or even die.

Ideal temperature: 20–37.8°C
💨 Humidity
Humidity:
🪴 Soil 5-7
Soil pH: 5-7
🌱 Fertilizer

Kuroiwa grass needs extra nutrients to encourage healthy new growth. In spring, applying compost around the plant’s base can effectively supply the nutrition it requires. Fertilization supports robust growth and helps the plant withstand diseases and pests.

🪴 Pot & Repot
✂️ Pruning

To maintain healthy Kuroiwa grass, it's important to regularly prune it in early spring. This involves cutting back about one-third of its height, which helps remove dead stems and encourages new growth. Doing so also keeps the grass in a compact form, improves airflow, and lowers the risk of disease. For the best results, always use clean, sharp tools when pruning.

🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Grass
Life Cycle
Perennial
Genus
Thuarea
Family
Poaceae
Hardiness Zone
10-12
Mature Height
4 cm to 10 cm
Mature Spread
49 cm to 91 cm
Leaf Color
Green
Leaf Type
Evergreen
Flower Color
White
Flower Size
1.02 cm to 2.03 cm
Bloom Time
Summer, Early fall, Mid fall
Planting Time
Spring, Summer, Autumn
Harvest Time
Late summer, Fall, Early winter
Native Area
Sri Lanka, Malaysia, Vanuatu, Philippines, Madagascar, Bangladesh, Fiji, China, Indonesia, Cambodia, Vietnam, Japan, Singapore, Thailand

Tags (5)

Common Names (3)

en Kuroiwa Grass
en Tropical beach grass
en Beachgrass