Eryngium agavifolium, Agave-Leaved Sea Holly is found in the central-northern Argentinian provinces of Santiago del Estero, Córdoba and San Luis to elevations of 1000m. Its spectacular foliage forms a cluster of large dramatic rosettes with broad serrated leaves resembling an Agave. Unlike an Agave, the spines are relatively soft and can not be considered dangerous. In summer it sends up tall branched inflorescences of pale greenish-white flowerheads with spiny-toothed bracts at their base. These cylindrical cone-shaped flowerheads are often undervalued yet are remarkable and elaborate structures with a complex and pleasing form and give the plant height and additional interest as summer turns to autumn.

Eryngium agavifolium appreciates a well-drained gritty soil, prefering full sun and dislikes a heavy water-logged loam or clay soil where its long roots are unable to breathe in the winter. A sheltered wind-free aspect is the ideal spot of Eryngium agavilfoium so tha the large seedheads do not blow over.