Acanthostachys strobilacea

Epiphytic plant with long pendant, very narrow, succulent and channeled leaves deep green with gray scurf and spiny; inflorescence on reed like stems bearing red cone like fruit. A clumping plant that's great for a hanging basket. Drought-tolerant; suitable for xeriscaping.

Acanthus ilicifolius

It is a semi-woody, sprawling shrub sometimes up to 3 m tall. Its stems are shiny green with speckles, and a pair of spines at the leaf's angles.

It grows in mangrove forest, pure freshwater or waterlogged areas, and on dry land.

Acanthus sp.

Acanthus montanus, also known as African mountain acanthus, False Thistle, Bear's breech, Mountain Thistle, and Alligator Plant, is a thinly branched unusual perennial with interesting foliage, basal clusters of oblong to lance-shaped glossy, dark green leaves reaching up to 12 inches long. The leaves have silver marks and wavy margins. It produces showy pink flowers in the summer to fall. It is said it is cold hardy to zone 9. The plant looks better in filtered light.

Several species, especially A. balcanicus, A. spinosus and A. mollis, are grown as ornamental plants.

Achetaria azurea, Otacanthus caeruleus

Free branching spreading small shrub with bluish mauve flowers with white eye. Leaves are very fragrant resembling pine scent. Everbloomer. Prefers acid soil.

Achillea sp.

Common Yarrow is a drought tolerant species of which there are several different ornamental cultivars.

The herb is purported to be a diaphoretic, astringent, tonic, stimulant and mild aromatic. Yarrows are well suited to the wildflower garden. The soft, lacy foliage makes an interesting and beautiful groundcover. The flowerheads are used in arrangements, fresh and dried.