Agave maculata aka Spice Lily

Agave maculata, commonly known as Texas tuberose or spice lily, is a small succulent-like perennial native to southern Texas and northeastern Mexico. Originally described by Eduard von Regel in 1856, it has a tangled taxonomic history: Hooker independently described the same plant as Agave maculosa in 1859, and it has also been placed in the genera Manfreda (Manfreda maculosa) and Polianthes (Polianthes maculosa). Plants of the World Online currently treats Manfreda maculosa as the accepted name, while GBIF retains Agave maculata Regel; both refer to the same taxon. Recent molecular work showed Manfreda is nested within Agave, but morphological differences — particularly its herbaceous, bulbous habit — have led some authorities to keep Manfreda as a distinct genus.

The plant grows as an acaulescent rosette of fleshy, silvery-green leaves marked with distinctive purple spots, giving rise to its species epithet "maculata" (spotted). The leaves often lay flat in low light and may wither nearly to nothing during prolonged drought, regrowing after rain. Underground, the plant is a rhizomatous geophyte, meaning it survives unfavorable seasons via fleshy storage organs that persist when the foliage dies back. From this rosette, a slender flower stalk emerges between April and September, typically reaching about 60 cm tall, though some sources note it can exceed 1.5 m (5 ft) under good conditions.

The flowers are particularly striking: each tubular bloom opens white and shifts color over three to four days, passing through pink to a deep dark red. The seedpods undergo a similar transition, ripening from green to purple to black. The species is the primary host plant for the caterpillars of the rare manfreda giant-skipper butterfly (Stallingsia maculosus), and habitat loss has prompted conservation efforts including seed collection and seedling reintroduction to prairie remnants. Flower stalks and rosettes are also browsed by deer, javelina, and feral pigs in the wild.

In cultivation, Agave maculata thrives in well-drained soil and tolerates extended drought, though garden plants flower best with regular summer water and light afternoon shade in the hottest sites. It is suitable for groundcover, rock gardens, and containers within its native warm-temperate to subtropical range.