Argentine senna (Senna corymbosa)
Care, watering, light and tips for Argentine senna on Floravia.
Quick facts
- Family: Fabaceae
- Difficulty: Easy to care for
- Watering: every 7 days
- Light: Full sun
- Temperature: 5–35 °C
- Toxicity: Toxic to pets
About Argentine senna
Senna corymbosa, commonly known as Argentine Senna, is a fast-growing deciduous shrub or small tree, valued for its profuse, bright yellow blossoms. Its dense clusters of flowers, appearing from late summer into autumn, make it ideal for adding color to sunny gardens, informal hedges, or as a standalone specimen. It's a robust and attractive plant that enhances any Mediterranean or temperate landscape.
Native range
Argentina and Uruguay
Care tips
It thrives in full sun for optimal flowering, though it can tolerate some partial shade. Regular watering is needed during establishment and dry periods, but once mature, it is quite drought-tolerant. It requires well-draining, fertile, slightly acidic to neutral soil; avoid heavy or very clayey soils that retain too much moisture. A common mistake is neglecting formative pruning, which can lead to leggy growth; prune in late winter to maintain its shape and encourage abundant blooms.
How to save a dying Argentine senna
- Warning signs
- Yellowish or brown, wilting leaves, premature leaf and flower drop, soft stems.
- First aid
- Check watering (over or under), sun exposure, and drainage. Repot if soil is compacted.
- What kills it
- Constant waterlogging, lack of direct sun, or heavy, poorly drained soils.
- Can it be saved?
- Yes, if you act quickly to correct watering and location. It's quite resilient.