Guinea grass (Megathyrsus maximus)
Care, watering, light and tips for Guinea grass on Floravia.
Quick facts
- Family: Poaceae
- Difficulty: Easy to care for
- Watering: every 4 days
- Light: Partial shade
- Temperature: 10–30 °C
About Guinea grass
Megathyrsus maximus, commonly known as Guineagrass, is a fast-growing, vigorous perennial grass native to Africa. It forms dense clumps of broad leaves and tall stems that can reach several meters in height, topped with feathery flower panicles. It is an ideal plant for erosion control on slopes, livestock forage, or as a large ornamental plant in tropical and subtropical gardens.
Native range
Sub-Saharan Africa
Care tips
It prefers full sun for optimal growth, although it tolerates some partial shade. It is adaptable to a wide range of soils, but thrives best in well-drained and fertile substrates. Regular watering is required during dry periods, especially in its early stages, to establish a strong root system. A common mistake is allowing it to spread unchecked in unwanted environments, as it can become invasive in warm, humid climates.
How to save a dying Guinea grass
- Warning signs
- Yellowish or brown leaf tips, stunted growth, weak and droopy stems. Young plants may show rapid wilting.
- First aid
- Replant in well-draining or looser soil. Ensure moderate, consistent watering if dry, or reduce if waterlogged.
- What kills it
- Prolonged root waterlogging is fatal. Extreme drought also kills, especially young or newly established plants.
- Can it be saved?
- Yes, if roots aren't completely rotted or dried. Act fast by correcting watering and drainage to see new shoots.