Cenchrus setaceus
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Cenchrus setaceus

آبشاری · Fountain grass · Crimson fountaingrass · Grass · African Fountain Grass

Tier 1 Difficulty: easy Water: low Light: full_sun Toxicity: low
Temperature
20–37 °C
Soil pH
6–7
Hardiness
Zone 9–11
Click count
316
Observations
2,675

Description

Source: leafsnap

Cenchrus setaceus, commonly known as crimson fountaingrass, is a C4 perennial bunch grass that is native to open, scrubby habitats in East Africa, tropical Africa, the Middle East and south-western Asia. It has been introduced to many parts of the world as an ornamental plant, and has become an invasive species in some of them. It is drought-tolerant, grows fast, reaches 3 feet in height, and has many purple, plumose flower spikes.

💡 Crimson fountain grass, scientifically known as Cenchrus setaceus, is an invasive perennial bunch grass that has spread to many regions worldwide. Originally introduced from South Africa as an ornamental plant, it has become a threat to native species in other areas. Additionally, this plant is recognized as a wildfire hazard.

🌳 One interesting use of crimson fountain grass is as a source of vivid pink dyes, suitable for various purposes including fabric dyeing and artistic projects. It is also valued for its biomass, providing a renewable feedstock for biofuel production that promotes sustainability.

🎭 Giving, well-being, unity

Care Guide

💧 Water

Crimson fountain grass is native to the scrublands of East Africa and thrives in well-drained soil with moderate drought tolerance. During its active growth period, it should be watered twice a week. When grown indoors, this plant enhances spaces with its textured appearance and does well in bright light, highlighting its low-maintenance nature and ability to thrive with minimal watering.

FAQ
When should I water my Crimson Fountain Grass?

Timely watering is essential for the growth and health of Crimson Fountain Grass, enhancing its crimson foliage and overall hardiness. The need for water is indicated by the curling or color change of the leaves and by the dryness of the soil's surface in the pot or container. It's important not to let the soil become overly dry, as it can stress the plant. Fast growth slowdown indicates insufficient water, and the ideal time for watering is in the early morning or late evening. Improper watering timing can lead to overwatering issues like root rot or dehydration consequences, so monitoring these signs regularly is crucial.

How should I water my Crimson Fountain Grass?

Crimson Fountain Grass, known for its drought tolerance, requires well-drained soil. It benefits from deep soaking rather than frequent light watering, especially after establishment. A deep watering technique using a hose or watering can with a long spout helps water reach the roots and encourages strong root system development. Using a moisture meter can assist in preventing both over and under-watering. Focus the watering at the plant's base, avoiding the foliage to prevent fungal diseases. Mulching and avoiding overhead watering, while preferring morning hours, also helps in maintaining soil moisture and preventing diseases.

How much water does Crimson Fountain Grass really need?

The amount of water Crimson Fountain Grass needs depends on the pot's size and the plant's root depth, which influence water absorption. A palm-sized plant typically requires about half a cup of water, but larger plants need a deep soak reaching their entire root system. Optimal watering is indicated by bright, lush leaves and a dense, bushy shape. Over or under-watering can lead to symptoms like stunted growth, leaf browning, or discoloration. It's crucial to avoid overwatering to prevent root rot and ensure the plant's vitality and beautiful appearance are maintained.

What kind of water is best for Crimson Fountain Grass?

Crimson Fountain Grass is moderately sensitive to water types and does best with distilled water, as it is free of harmful contaminants or minerals. Rainwater is a suitable alternative if it's pollutant-free, and filtered water can be used if other sources are not available. Tap water is the last resort due to potential chlorine, fluoride, or other minerals that the grass might be sensitive to. Letting tap water sit for 24 hours before use can help dissipate chlorine. Room temperature water (68-72°F or 20-22°C) is preferred to avoid shocking the plant.

How do Crimson Fountain Grass's watering needs change with the seasons?

Crimson Fountain Grass's watering requirements vary seasonally. In spring, slightly moist soil supports new growth, avoiding over or under-watering. Summer demands increased water due to active growth and heat resistance, but avoid waterlogged conditions. Autumn's cool, reduced evaporation rates mean less frequent watering, maintaining moist soil without saturation. Winter marks a dormant period with minimal watering needed, only light watering if the soil is completely dry, to prevent root rot or diseases. Adjust watering based on natural rainfall and indoor conditions.

☀️ Light Full sun

Crimson fountain grass grows most vigorously with plenty of sunlight, which greatly aids its healthy development. Although it can tolerate some shade, insufficient light may dull its bright color and restrict growth. In its native habitat, this plant is accustomed to abundant sunshine.

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

Crimson fountain grass thrives best under full sun, requiring more than 6 hours of sunlight to maintain its vibrant color and healthy growth. It can tolerate partial sun, approximately 3-6 hours of sunlight, but may exhibit duller colors and stunted growth under these conditions. In its natural habitat, this plant is accustomed to abundant sunlight. Indoor plants, in particular, require adequate lighting for optimal growth, and when natural sunlight is insufficient, artificial lighting can be a valuable substitute to encourage healthy growth.

What are the symptoms of inadequate light for crimson fountain grass?

Symptoms of inadequate light in crimson fountain grass include smaller new leaves, leggy or sparse growth, faster leaf drop, slower or no new growth, lighter-colored new leaves, chlorosis (leaves turning yellow), sunscald, leaf curling, wilting, and leaf scorching. These symptoms indicate the plant's struggle with insufficient sunlight, affecting its health and appearance significantly.

How can I address inadequate lighting for my crimson fountain grass?

To address inadequate lighting, gradually move the plant to a sunnier location until it receives at least 6 hours of direct sunlight daily. For indoor plants, use a south-facing window and keep curtains open during the day or provide additional light with artificial lighting for at least 8 hours daily. Outdoor plants should be moved to a sunnier spot gradually to avoid sunburn. Removing obstructions and possibly transplanting smaller plants to areas with better sunlight can also improve lighting conditions. Note that parts of the plant affected by insufficient sunlight may not recover, but new growth should be healthy with improved light exposure.

🌡️ Temperature 20–37.8°C

In its native environment, crimson fountain grass flourishes in hot temperatures ranging from 68 to 100 ℉ (20 to 38 ℃). The plant tends to thrive in warm weather and is less productive in cooler conditions. During fall and winter, it is best kept in a room with a temperature no lower than 60 ℉ (15 ℃) to prevent damage.

Ideal temperature: 20–37.8°C
FAQ
What are the ideal temperature conditions for Crimson Fountain Grass?

Crimson fountain grass thrives in warm weather, with optimal temperatures ranging from 68 to 100°F (20 to 38°C). It is less productive in cooler conditions and requires a minimum temperature of 60°F (15°C) during fall and winter to avoid damage. This plant is extremely heat-tolerant but can be harmed by cold temperatures, so it's recommended to bring it indoors and place it near a bright window during colder seasons, keeping it away from heaters to maintain beneficial growth conditions.

How does low temperature affect Crimson Fountain Grass and what are the solutions?

Crimson fountain grass is not tolerant of low temperatures and prefers temperatures above 20°C. Exposure to temperatures below 0°C is detrimental, and temperatures below -5°C may cause the leaves to lighten in color. Following frost damage, leaves can turn brown or black, showing signs of wilting and drooping. To remedy frost damage, trim off affected parts and move the plant indoors to a warm environment, ideally near a south-facing window for ample sunlight, while avoiding placement near heaters or air conditioning vents to prevent excessive dryness.

How does high temperature affect Crimson Fountain Grass and what are the solutions?

Crimson fountain grass should be kept below 38°C during the summer to prevent high temperature stress. When temperatures exceed 43°C, the plant's leaves may lighten in color, indicating susceptibility to sunburn. To address sunburn, trim away the sunburned and dried-up parts and relocate the plant to a shaded area during the midday and afternoon sun. Ensuring that the plant is watered in the morning and evening will help keep the soil moist and support the plant's health.

💨 Humidity
Humidity:
🪴 Soil 6-7
Soil pH: 6-7
🌱 Fertilizer

Crimson fountain grass needs extra nutrients to encourage healthy new growth. In spring, spreading some compost around the plant's base can effectively supply the nutrition it requires. Fertilizing helps support vigorous growth and assists the plant in resisting diseases and pests.

FAQ
Why should I put fertilizer on my Crimson fountain grass?

Fertilizing Crimson fountain grass is important for a few reasons. Firstly, it provides the necessary nutrients for the plant to grow strong and healthy. Secondly, these nutrients also help to maintain the well-being of older parts of the plant, while aiding in disease and pest resistance.

When should I put fertilizer on my Crimson fountain grass?

To ensure the survival of Crimson fountain grass in your garden, it's important to know when to fertilize. This plant doesn't need a lot of nutrients, especially when it's dying back. While you can use diluted fertilizer at the beginning of the growing season, it's not the best practice. Instead, consider adding mulch or compost around the base of the plant.

When is a bad time to fertilize my Crimson fountain grass?

If you're not using packaged fertilizers, you don't need to be concerned about when to stop feeding Crimson fountain grass. Simply applying a layer of compost or mulch in the spring will be sufficient to keep the grass happy all year. There's no need to worry about mulching or composting during the dormant winter period.

What kind of fertilizer does my Crimson fountain grass require?

You can skip buying fertilizer for Crimson fountain grass. Instead, use compost in the spring to provide the necessary nutrients. Additionally, if you mulch your garden annually, the bark will keep your plant well-fed and content.

How can I add fertilizer to my Crimson fountain grass?

When planting Crimson fountain grass, whether you choose to use mulch or compost, the steps are the same. First, apply a layer of the chosen material, ensuring it covers the base of the plant. If you decide to use both mulch and compost, remember to decrease the amount of compost used. Additionally, adding a layer of mulch can offer two benefits: it helps the soil retain moisture and provides additional nutrients for your plant.

🪴 Pot & Repot 2-3 years

When repotting Crimson fountain grass, pick a pot 1-2 inches (2.5–5.1 cm) larger with plenty of drainage. Use a well-draining potting mix. Repot in spring or fall, making sure the root ball sits slightly below the rim of the pot. Water thoroughly after repotting and place it in a warm spot with indirect sunlight.

Suggested frequency: 2-3 years
✂️ Pruning
🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Grass
Life Cycle
Perennial, Annual
Genus
Cenchrus
Family
Poaceae
Hardiness Zone
9-11
Mature Height
0.2 m to 1.22 m
Mature Spread
0.61 m to 1.22 m
Leaf Color
Green, Blue, Red, Purple
Leaf Type
Deciduous
Flower Color
Pink
Flower Size
15.24 cm
Bloom Time
Summer
Planting Time
Spring, Summer
Harvest Time
Mid summer, Late summer, Early fall

Tags (6)

Common Names (6)

ar آبشاری
en Fountain grass
en Crimson fountaingrass
en Grass
en African Fountain Grass
en Crimson fountain grass