Cenchrus alopecuroides — an easy houseplant, prefers full sun light
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Cenchrus alopecuroides

Cenchrus Alopecuroides

Updated · 688 observations
ON THIS PLANT

Cenchrus alopecuroides, previously Pennisetum alopecuroides, commonly known as the Chinese pennisetum, Chinese fountaingrass, dwarf fountain grass, foxtail fountain grass, or swamp foxtail grass, is a species of perennial grass native to Asia and Australia. The culms are erect, and 60–100 cm long. The leaf-blades are erect or drooping; flat, or conduplicate or involute (spiral); and from 10 to 45 cm long by 3–6 mm wide.

A note from PlantMom

Chinese fountaingrass is disease-resistant and is generally unlikely to develop illnesses. Regarding care, this plant is fairly low-maintenance. When grown outdoors it needs only minimal watering, and larger specimens usually do not require pruning. Smaller plants, however, should be trimmed after they have finished blooming. Chinese fountaingrass is suitable for anyone with outdoor space, such as a garden or deck, and does not demand extensive plant-care experience.

— PlantMom
CARE GUIDE

How to keep Cenchrus Alopecuroides.

Light

Chinese fountaingrass does best when it gets plenty of sunlight for most of the day. It can also tolerate locations with moderate shade. However, sites with a severe shortage of light may restrict its growth. Native to sunny environments, the plant can adjust to variations in light exposure, but long periods without enough sunlight can lead to poor health.

Water

Chinese fountaingrass flourishes in grasslands and prefers moderate watering. During its growth period, weekly watering helps maintain its drought tolerance. For optimal health, it requires well-draining soil to prevent root rot, mimicking its natural habitat.

Temperature

Chinese fountaingrass originates from habitats with temperatures between 41 and 95 °F (5 to 35 °C). It grows best in moderate conditions and may need extra care during periods of extreme heat or cold.

Fertilizer

Chinese fountaingrass benefits from extra nutrients to encourage healthy new growth. In spring, spreading some compost around the plant’s base can effectively supply the nutrition it needs. Fertilizing helps support vigorous growth and improves the plant’s resistance to diseases and pests.

Pruning

Chinese fountaingrass is known for its tufts of fluffy seed heads. Pruning in early spring to about 6 inches (15 cm) above the ground helps remove old growth. This practice improves air circulation, reduces the risk of disease, and promotes healthy growth. However, it's important to avoid over-pruning to maintain the plant’s vigor.

Pot & Repot

Repot Chinese fountaingrass every 2-3 years into a larger container to support its tufted growth. After repotting, ensure it receives plenty of light and water it thoroughly, but be careful not to overwater. For optimal health and to showcase its fountain-like foliage, Chinese fountaingrass thrives in well-draining soil.

CHARACTERISTICS

Botanical profile.

Plant Type
Grass
Life Cycle
Perennial
Genus
Cenchrus
Family
Poaceae
Hardiness Zone
5-9
Mature Height
1.22 m
Mature Spread
1.22 m to 1.52 m
Leaf Color
Green, Blue, Yellow, Gold
Leaf Type
Deciduous
Flower Color
Tan
Flower Size
2.54 cm
Bloom Time
Mid summer
Planting Time
Spring, Summer, Autumn
Harvest Time
Mid summer, Late summer, Early fall
ALSO KNOWN AS

Other names.

en Fountain Grass en Black Fountaingrass en Swamp foxtail grass en Chinese pennisetum en Chinese fountain grass en Dwarf Fountain Grass en Chikarashiba (JP)
FREQUENTLY ASKED

Reader questions.

What should I do if I give my Chinese fountaingrass too much or too little water?

Proper watering is crucial for the health of this beautiful ornamental grass. When planted in the ground, watering issues can be resolved. However, in a container, over or under-watering can quickly lead to the death of Chinese fountaingrass. If the grass doesn't receive the right amount of water, it may stop growing. Overwatering will cause yellow leaves with brown tips, while underwatering leads to drooping leaves, weak seed head production, and browned leaves. If you suspect watering issues, the first step is to determine if there is too much or too little water. If there is excessive watering, stop watering immediately and wait for the soil to dry out. Once new growth appears, test the soil for moisture and decide if more water is needed. If the grass is not getting enough water, simply provide it with a deep drink and observe if it improves. It is important to remember that long, deep watering is better than frequent shallow waterings. Deep watering helps grass develop deep roots, making them more resistant to drought and watering-related problems.

Why should I put fertilizer on my Chinese fountaingrass?

Fertilizing Chinese fountaingrass has a simple purpose: to provide your plant with the extra nutrients it needs for healthy new growth. These additional nutrients also support the health of the existing growth and can help protect your plant from diseases and pests.

What are the sunlight requirements for Chinese fountaingrass?

Chinese fountaingrass requires full sun, defined as over 6 hours of sunlight a day, to thrive optimally. It can also tolerate partial sun, which means about 3-6 hours of sunlight. Ensuring your garden or planting area receives the right balance of light and shade is crucial for the health and happiness of your plants. It's important to observe how sunlight moves through your garden to choose the best spots for planting.

What is the native temperature range for Chinese fountaingrass?

Chinese fountaingrass is native to environments where temperatures range from 41 to 95°F (5 to 35°C). It thrives best in moderate temperatures and may require additional care in extreme heat or cold seasons.

How frequently do I need to water my Chinese fountaingrass?

The watering needs of Chinese fountaingrass will vary depending on where it is planted. Generally, it is recommended to water this grass every week. However, in hot climates, watering once or twice a week during the summer may be necessary. In moderate climates, watering once every seven days or more may suffice. It is important to note that grass in containers usually needs to be watered more frequently compared to grass planted in the ground. Additionally, the location of the grass matters as shaded grasses require less watering compared to grasses planted in the ground. When watering Chinese fountaingrass, it should only be done when the soil is dry. To determine if the soil is dry, you can press your finger a couple of inches into the soil or use a portable scale to weigh the potted grass. Signs such as folded blades and thinner appearance indicate that the roots lack sufficient water. Although Chinese fountaingrass is drought tolerant, regular and deep waterings will enhance its color. In the wild, Chinese fountaingrass grows in open scrubland, exposed to extreme heat, bright sun, and intermittent rain. While it is drought resistant, it still requires care and attention. Gardeners suggest that consistent watering is beneficial for this hardy grass. Initially, when it is first planted, Chinese fountaingrass will need more frequent watering until its deep roots are established. In pots, the soil tends to dry quickly, especially if exposed to hot, direct sun. It is advisable to test the soil every 3 to 4 days and water only when it feels dry. Chinese fountaingrass planted in the ground generally requires less watering, but this can vary depending on the type of soil. Heavy clay holds water for a longer time, so it may appear dry on the surface while still retaining moisture below ground. On the other hand, sandy soils that drain quickly will need to be watered more often.

When should I put fertilizer on my Chinese fountaingrass?

To ensure the survival of Chinese fountaingrass in your garden, it is important to know the right time for fertilization. This grass doesn't need a lot of nutrients, especially when it is dying back. It is generally not recommended to apply diluted fertilizer at the beginning of the growing season. Instead, a better option is to use mulch or compost around the base of the plant.

How does Chinese fountaingrass respond to different lighting conditions?

Originate from environments abundant in sunlight, Chinese fountaingrass adjusts well to fluctuations in light exposure. It thrives best in areas where it can receive ample sunlight for the majority of the day but can manage moderate shade. However, severe lack of light may impede its growth. During periods of insufficient natural sunlight, especially in winter or less sunny spaces, indoor plants can benefit from artificial lighting. LED lights are recommended, providing 30-50W/sq ft for full sun plants, 20-30W/sq ft for partial sun plants, and 10-20W/sq ft for full shade plants. The light source should be placed 12-36 inches above the plant for 8-12 hours per day.

Does Chinese fountaingrass require special frost protection measures during winter?

Chinese fountaingrass has strong cold resistance, and special frost protection measures are usually not necessary during winter. However, if winter temperatures are expected to drop below -25°C, it is important to provide cold protection by covering the plant with materials such as soil or straw. Additionally, watering the plant abundantly before the first freeze in autumn to ensure the soil remains moist and enters a frozen state is recommended to help prevent drought and water scarcity during winter and early spring.

What should I watch out for when I water my Chinese fountaingrass during different seasons, climates, or when it's growing?

To determine if you are watering your grass enough, pay attention to how fast it is growing. Chinese fountaingrass, for example, tends to double in size during the hottest months of the year. So, if the weather is hot but the grass isn't growing vigorously, you may need to adjust your watering schedule. In winter, you might only need to water once a month, but it's still important to check the soil's moisture level. The grass requires more water during its growth cycle in the warmest months, but during winter and cooler months, its water needs decrease significantly. One crucial thing to remember is that the soil should always be completely dry before you water the Chinese fountaingrass.

When is the best time for me to not add fertilizer to my Chinese fountaingrass?

If you're not using packaged fertilizers, you can relax about when to stop feeding Chinese fountaingrass. Just apply a layer of compost or mulch in the spring and that will be sufficient to keep it happy all year. No need to worry about mulching or composting in the winter when the plant is dormant.

What are the common symptoms of inadequate lighting for Chinese fountaingrass?

Inadequate lighting can lead to several symptoms in Chinese fountaingrass, including smaller new leaves, leggy or sparse growth, faster leaf drop, slower or no new growth, and lighter-colored new leaves. These symptoms indicate the plant is not receiving enough sunlight, hindering its ability to photosynthesize and grow healthily. Chlorosis, or the yellowing of leaves due to lacking chlorophyll, along with sunscald, leaf curling, wilting, and leaf scorching, are also common issues when the plant is exposed to inappropriate light levels.

How does Chinese fountaingrass respond to low temperatures?

Chinese fountaingrass is cold-tolerant and thrives best when the temperature is above 5°C. During winter, it should be kept above -20°C. When the temperature falls below -25°C, there might not be any noticeable changes during winter, but there may be a decrease in sprouting or even no sprouting during springtime. If parts of the plant fail to sprout in spring, it is recommended to remove those parts.

PLATES
Cenchrus alopecuroides leaf
PLATE 01 · leaf
Cenchrus alopecuroides leaf
PLATE 02 · leaf
Cenchrus alopecuroides flower
PLATE 03 · flower
Cenchrus alopecuroides flower
PLATE 04 · flower
Cenchrus alopecuroides fruit
PLATE 05 · fruit
Cenchrus alopecuroides fruit
PLATE 06 · fruit
ALSO IN THE LIBRARY

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