Coffee senna (Senna occidentalis)

Also known as: Mogdad Coffee, Stephanie Coffee, Styptic weed, Coffeeweed

Coffee Senna (*Senna occidentalis*) is a perennial shrub that thrives in warm, humid climates. Often found in open woodlands, waste areas, and along roadsides, this plant is sometimes regarded as an invasive species. It features yellow blossoms in the spring and produces brown fruit by late summer to early fall. The seeds of Coffee Senna can be roasted and used as a caffeine-free coffee alternative.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting Toxicity

Attributes of Coffee senna

Lifespan

Annual, Perennial

Plant Type

Herb, Shrub

Plant Height

61 cm to 1.2 m

Spread

60 cm to 1.2 m

Leaf Color

Green

Flower Size

2.5 cm to 5 cm

Flower Color

Yellow

Images of Coffee senna

Quickly Identify Coffee senna

Erect herbaceous form, up to 3 feet (91 cm) tall.

Compound leaves with 4-5 pairs of lanceolate leaflets.

Bright yellow flowers with 5 sepals and 5 petals.

Distinctive elongated dark brown pods, 4-4.7 inches (10-12 cm) long.

Light green stout stem, up to 2 inches (5 cm) in diameter.

Scientific Classification of Coffee senna

Phylum

Vascular plants

Class

Dicotyledons

Order

Fabales

Family

Legume

Genus

Sennas

Species

Coffee senna

Planting and Growing of Coffee senna

Care Difficulty

Easy

Watering Schedule

Every 2 days

Sunlight Requirements

Full sun

Sunshine Duration

4-6 hours

Ideal Temperature

68-86℉

Soil Type

Potting Mix, Peat Mix

Soil pH

5.5-8.5

Fertilizer Type

Balanced

Pruning Season

Spring, Summer

Pruning Area

Branches, Leaves

Pruning Frequency

2 times a year

Repotting Season

Spring

Pot Type

Ceramic, Plastic

How to Water Coffee senna?

Senna occidentalis prefers a balanced watering approach. It thrives when the soil is kept moist without being waterlogged. During each watering, ensure that 500 ml of water thoroughly wets the soil, reaching the root zone but allowing excess to drain to prevent standing water.

What are the symptoms of an underwatered Coffee senna? ›

What should I do if my Coffee senna is not getting enough water? ›

What are the symptoms of an overwatered Coffee senna? ›

How to save an overwatered Coffee senna? ›

What Are the Sunlight Requirements for Coffee senna?

Sunlight Requirements: Full sun, Partial sun

Duration of light: 6 to 8 hours

Full sun for optimal growth; ensures vibrant foliage, strong stems, and maximum flowering.

What is the best lighting condition for Senna occidentalis? ›

How can you achieve ideal lighting for this plant? ›

What benefits does ideal lighting bring to Senna occidentalis? ›

More About Sunlight Requirements Techniques→

What Is the Ideal Temperature Range for Coffee senna?

Ideal Temperature: 68 ~ 86℉

The ideal temperature range for growing Senna occidentalis is between 68°F to 86°F. This range provides optimal growth conditions, promoting healthy foliage and flowering while minimizing stress on the plant.

What Soil is Best for Coffee senna?

Soil type: Loam, Sandy loam, Sandy soil

Soil PH: 5.5 ~ 8.5

Senna occidentalis thrives in well-drained soils as it prevents waterlogging and ensures proper root aeration. This is crucial for preventing root rot and promoting healthy plant growth. While not overly demanding, Senna occidentalis benefits from soil with moderate fertility. This ensures the plant receives enough nutrients for robust growth without risking nutrient burn. A soil pH ranging from slightly acidic to neutral supports the plant's nutrient uptake processes, ensuring optimal availability of essential nutrients for its development. More About Soil→

How to Fertilize Coffee senna?

Fertilizer type: Balanced

Senna occidentalis requires a balanced amount of nutrients. For liquid fertilizers, dilute them to half the recommended strength to avoid overfeeding. For slow-release fertilizers, use about 50 grams per plant, ensuring even distribution around the root zone. More About Fertilizing Techniques→

How to Prune Coffee senna?

Pruning Time: Spring, Summer, Autumn

Begin by sterilizing your pruning tools to prevent disease spread. Start by removing any dead, diseased, or damaged branches. Focus on trimming the outermost parts of the plant to shape it and promote better airflow and sunlight penetration. When shaping Senna occidentalis, aim for a well-balanced shape. Make cuts just above a node or a leaf bud to encourage bushier growth. Keep adjusting the overall form by targeting uneven growth that disrupts the symmetry. More About Pruning Techniques→

How to Propagate Coffee senna plant?

Propagate Time: Spring, Early spring, Summer

Begin by soaking the seeds in warm water for 24 hours. This step is crucial as it softens the hard seed coat, enhancing germination rates by allowing moisture to penetrate efficiently.

Sow the seeds shallowly in the seed tray filled with sterilized potting mix. Ensure they are spaced adequately to prevent overcrowding, which can lead to unhealthy seedlings.

Water the seeds lightly to maintain consistent moisture levels. Be cautious not to overwater, as this can hinder seedling growth and foster fungal diseases.

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How to Repot Coffee senna plant?

Repotting frequency: Every 2 years

Repotting Senna occidentalis is necessary when you notice roots protruding from the drainage holes or when the plant looks root-bound and growth rate slows. It's also ideal to repot when the plant has outgrown its current container. Performing repotting in spring or early summer maximizes its adaptation and growth in the new environment.

Select a pot just one size larger than the current one, with enough drainage holes to allow excess water to escape, preventing root rot. Using a slightly larger pot helps manage the plant's evolving root system without overwhelming it with too much space, encouraging healthy growth and stability.

Use a well-draining potting mix that's rich in organic matter. This soil type provides the necessary balance of moisture retention and aeration, allowing the roots to breathe and absorb nutrients effectively. A well-chosen soil mix ensures healthier plant growth and reduces the risk of root diseases.

Toxicity of Coffee senna

Is Coffee senna toxic to humans?

Coffee senna presents a significant health hazard for humans, as every part of the plant, especially the seeds, is toxic when consumed. This plant contains powerful anthraquinones, such as chrysophanol, emodin, and physcion, along with toxalbumins, which contribute to its elevated toxicity levels. Ingestion of these compounds can lead to severe symptoms including gastrointestinal upset, liver and kidney damage, and potentially life-threatening conditions. The intensity of these symptoms can differ based on the quantity ingested, but even minimal amounts can be dangerous. It is imperative to prevent accidental consumption of any part of coffee senna to mitigate the risk of severe poisoning.

Is Coffee senna toxic to cat?

Coffee senna represents a serious toxicity hazard for cats. If accidentally consumed, every part of the coffee senna plant, especially the seeds, can be extremely toxic. Exposure to coffee senna might result in signs of severe distress, including gastrointestinal problems or neurological symptoms. Because it contains anthraquinones and toxalbumins, coffee senna poses a substantial risk of poisoning, necessitating vigilance from cat owners. Prompt veterinary care is essential for effectively addressing a cat's recovery from potential poisoning caused by coffee senna.

Is Coffee senna toxic to dog?

The coffee senna plant represents a significant toxicity threat to dogs. Canines may inadvertently consume parts of the plant, resulting in poisoning. Every part of the coffee senna is toxic, and the seeds are especially dangerous. Signs of poisoning in dogs can manifest as gastrointestinal disturbances, fatigue, a general lack of energy, and potentially more severe clinical symptoms based on the quantity ingested. If you believe your dog has ingested any part of the coffee senna, it is critical to obtain prompt veterinary attention to manage the possible health risks.

WARNING

The judgment on toxicity and danger is for reference only. We DO NOT GUARANTEE any accuracy of such judgment. Therefore, you SHALL NOT rely on such judgment. It is IMPORTANT TO SEEK PROFESSIONAL ADVICE in advance when necessary.

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