Eryngium alternatum
Care, watering, light and tips for Eryngium alternatum on Floravia.
Quick facts
- Family: Apiaceae
- Difficulty: Easy to care for
- Watering: every 7 days
- Light: Partial shade
- Temperature: 10–30 °C
About Eryngium alternatum
Eryngium alternatum, commonly known as Hierba del sapo, is a perennial herbaceous plant from the Apiaceae family, characterized by its spiny leaves and conical, bluish-grey flower heads. Its robust appearance and unusual texture make it ideal for rock gardens, path edges, or as an accent in xeriscapes. It provides unique architectural interest and is an excellent low-maintenance garden specimen.
Native range
Argentina, Bolivia, Brazil, Chile, Paraguay, Uruguay
Care tips
Eryngium alternatum thrives in full sun in well-drained soils, preferably sandy or stony, as it is highly susceptible to waterlogging. It requires moderate watering once established, being drought-tolerant; overwatering is the most common mistake to avoid. It does not need frequent fertilization and prefers poor soils, which contributes to its hardiness and low maintenance.
How to save a dying Eryngium alternatum
- Warning signs
- Soft, yellowing or blackish leaves, drooping stems. Indicates overwatering or poor drainage.
- First aid
- Remove plant, check roots (cut if soft/dark), repot in dry, well-draining substrate.
- What kills it
- Overwatering is its main enemy, rotting its roots. Also, lack of light.
- Can it be saved?
- Yes, if you act quickly to remove excess moisture. It's tough, but won't tolerate waterlogging.