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Senna occidentalis
Coffee Senna
Senna occidentalis
Senna occidentalis, also known as Coffee Senna, is a herbaceous plant in the legume family. It is a widespread species, often found in disturbed areas. It is characterized by its compound leaves and yellow flowers. The plant gets its name from the roasted seeds that have been used as a coffee substitute. It is often considered a weed due to its rapid growth and tendency to spread.
CategoryDetails
Medicinal UsageMedicinal Usage
Duration to maturity3 months to harvest
Estimated Plant Lifespan1 year lifespan
Toxic to humansToxic to humans
ToxicityToxic to: Livestock
Sun Requirements6+ hours direct sunlight (Full Sun)
Pollination

Method: Self-pollination, insect pollination

Notes: Senna occidentalis can self-pollinate, but is also visited by insects for pollination, increasing seed production.

Watering Requirements

Method: Water at the base of the plant.

Frequency: Water regularly, especially during dry periods, allowing the soil to dry slightly between waterings.

Notes: Avoid overwatering, which can lead to root rot.

Humidity Requirements

Level: Moderate

Maintenance: Generally does not require special humidity maintenance.

Cleaning RequirementsSenna occidentalis can be pruned to control its size and shape. Be cautious as the plant may cause skin irritation on sensitive people. Wear gloves and long sleeves when handling.
Temperature Range

Min: 15°C

Max: 35°C

Tagetes erecta
Mexican marigold
Tagetes erecta
Marigolds are known to repel nematodes and other soil-borne pests that can affect Senna occidentalis.
Bidens pilosa
Hairy Beggarticks
Bidens pilosa

Hairy Beggarticks compete for resources like sunlight, water, and nutrients due to their similar growth habits and preferences for disturbed habitats.

Leaf miners

Leaf miners create tunnels within the leaves, causing cosmetic damage and potentially reducing the plant's photosynthetic capacity. Look for light-colored, squiggly lines on the leaves.

Aphids

Aphids suck sap from the plant, causing leaves to curl and yellow. They can also transmit plant viruses. Look for small, soft-bodied insects clustered on stems and undersides of leaves.

Steps:

    • Collect seeds from mature pods.
    • Scarify the seeds by lightly scratching the seed coat or soaking in warm water overnight.
    • Sow seeds directly into the ground or in containers.
    • Keep the soil moist until germination.
    • Transplant seedlings to their permanent location once they are established.

Neem Oil

Neem oil can be used to control leaf miners and aphids.

Compost

Adding compost to the soil improves drainage and provides nutrients to support healthy growth.