Genus · Acoraceae
Acorus
2 species tracked in Horta’s catalog, and the named cultivars growers keep. Walk down to a species for its full care record, or into a cultivar for its traits and provenance.
Species in this genus
The ones growers meet most — each links to its own page.
Acorus calamus
Calamus
Acorus calamus is a rhizomatous marginal wetland perennial from temperate Eurasia, growing along the edges of ponds and slow water. Unlike most houseplants it tolerates and prefers consistently wet, boggy soil that should not dry out fully; water when the surface begins to feel less than saturated, keeping the mix evenly moist. Give it bright light and high humidity, the conditions of its open wetland habitat.
Acorus gramineus
Slender Sweet Flag
Acorus gramineus is a rhizomatous, grass-like perennial native to the wet margins of streams and marshes across temperate and subtropical Asia. Unlike most houseplants, it is a semi-aquatic wetland species that wants consistently damp soil and dislikes drying out; keep the mix evenly moist and water when the surface just begins to feel less than wet. Give it bright indirect light and steady humidity, and avoid letting it sit in cold, stagnant conditions.
About the genus
A genus-level overview — shared traits, history, the botany that ties these plants together — is on its way. For now, the species and cultivars above and below carry the genus.
Kept true by its growers
Acorus keeps evolving — species move, cultivars appear, IDs get corrected. If you can place an unplaced plant or add a species we’re missing, the whole genus gets truer.
Overview derived from 2 tracked species · the contribute flow arrives with the next slice.