Poaceae
Guinea grass: Ground Cover Plant
Megathyrsus maximus
An extremely hardy plant that requires full sun and space to grow. Ideal for tropical climates, requiring little maintenance once established.
Every 14 days
Direct sun
15° - 40°C
50% - 85%
Categories
What is Guinea grass?
Guinea grass (Megathyrsus maximus) is a easy-care plant from the Poaceae family. Megathyrsus maximus, popularly known as Guinea grass, is a large perennial grass native to Africa. It is widely recognized for its robustness, rapid growth, and formation of dense clumps. Its leaves are long and linear, and its inflorescences occur in open, branched panicles. Although it is one of t...
Guinea grass grows up to 3.5m, with spread of 150cm, watering every 14 days, 15°C – 40°C, 50–85% humidity. It is not suitable for indoor environments and safe for pets.
Unlike many tropical plants, Guinea grass tolerates watering mistakes. Best for beginners. Unlike many popular species, Guinea grass is safe to keep around pets.
How to Care for Guinea grass?
TLDR: Guinea grass needs Direct sun, watering every 14 days, and temperatures between 15-40°C with 50-85% humidity.
How Often Should You Water Guinea grass?
Water regularly during the first year. Once established, the plant shows good drought tolerance but benefits from watering during prolonged dry spells.
How Much Light Does Guinea grass Need?
This grass reaches its full potential under full sun; a lack of direct light can result in etiolation and loss of vigor.
What Is the Best Soil for Guinea grass?
Prefers deep, fertile, and well-drained soils, but tolerates acidic soils if there is good nutrient availability.
What Pot Should You Use for Guinea grass?
Cultivation in pots is not recommended due to its vigorous root system and tall stature; prefer direct planting in the ground.
Care Schedule
Fertilize
Every 21 days
What Is Guinea grass and Where Does It Come From?
Megathyrsus maximus, popularly known as Guinea grass, is a large perennial grass native to Africa. It is widely recognized for its robustness, rapid growth, and formation of dense clumps. Its leaves are long and linear, and its inflorescences occur in open, branched panicles. Although it is one of the world's main tropical forages, it is also used in degraded area recovery projects and as a visual barrier in large gardens.
How to Propagate Guinea grass?
Clump Division
- Perform division preferably on cloudy days or in the late afternoon
- Cut back some foliage to reduce water loss by transpiration immediately after planting
- 1 Clump Extraction
Using a shovel, dig around the base of the plant and carefully lift the clump to retain as many roots as possible.
- 2 Dividing the Clumps
Use a sharp knife or hoe to separate the clump into smaller parts, ensuring each new plant has healthy roots and shoots.
- 3 Planting
Plant the divisions immediately in the desired location, cover with firm soil, and water thoroughly.
Materials needed:
Sowing
- Keep the soil moist until complete germination
- Sowing should be avoided during frost periods
- 1 Soil Preparation
Clear the area of weeds and loosen the topsoil layer.
- 2 Spreading
Spread the seeds evenly over the planting area.
- 3 Covering
Lightly cover the seeds with a thin layer of soil or simply press them against the soil to ensure contact.
Materials needed:
How Big Does Guinea grass Grow?
TLDR: Guinea grass can reach up to 3.5m tall with Fast growth rate.
Max height
3.5m
Spread
1.5m
Growth rate
Fast
Foliage
Semi-evergreen
Plant Uses
Ornamental
Great for decoration
Ground Cover
Soil coverage
Is your plant showing symptoms?
Click on the symptom to discover possible causes:
What Diseases Commonly Affect Guinea grass?
TLDR: Guinea grass is susceptible to 8 known diseases. Monitor regularly for early detection.
Rust
Rust is a common fungal disease caused by fungi in the order Pucciniales that affects a wide variety of plants. The disease gets its name from the characteristic orange, yellow, or reddish-brown pustules that appear on leaves, resembling metal rust. This obligate fungal parasite requires living plants to survive and can cause significant economic losses in agricultural crops.
Leaf Spot
Leaf spot is a common fungal disease caused by various pathogens including Alternaria, Ascochyta, Colletotrichum, Septoria, and Venturia. It primarily affects leaves, causing discolored spots that can lead to premature leaf drop if left untreated.
Root Rot
Root rot is a serious fungal disease that affects the root system of plants, causing them to decay and die. It is primarily caused by overwatering, poor drainage, or soil-borne fungi such as Pythium, Phytophthora, Rhizoctonia, and Fusarium. The disease thrives in waterlogged conditions where roots are deprived of oxygen, making them susceptible to fungal infection.
Overwatering
Overwatering occurs when plants receive too much water, depriving roots of oxygen and causing root rot. This environmental stress is one of the most common causes of houseplant death, as waterlogged soil prevents roots from breathing and functioning properly.
Meaning & Symbolism
Represents the strength of tropical nature and the capacity for constant renewal.
Compare with similar plants
| Attribute | Difficulty | Light | Watering | Pet Safe |
|---|---|---|---|---|
| Peace Lily | Easy | Low light | 4d | ⚠️ |
| Swiss Cheese Plant | Easy | Partial shade | 10d | ⚠️ |
| Golden Pothos | Easy | Low light | 8d | ⚠️ |
| ZZ Plant | Easy | Low light | 18d | ⚠️ |
