Adiantum pedatum, the northern Maidenhair fern, is one of the most beautiful of all ferns with distinctive palmate fronds.

Adiantum raddianum 'Fragrantissimum' is an evergreen maidenhair fern with arching black stems and light green aromatic fronds.

Andromischus clavifolius 'Indian Clubs' forms clusters of pointed, cylindrical, light green to yellowish green, red-mottled, succulent leaves on narrow stems.

Andromischus cooperi var. festivus has plump, nearly cylindrical, succulent, grey leaves with purple blotches and lobed tips.

Andromischus marianiae Antidorcatum Group forms clusters of long, cylindrical, light green, pointed, succulent leaves with bold red spots.

Andromischus marianiae 'Herrei' is one crazy succulent with pointed, cylindrical, purple-red leaves completely covered in bumpy, warty projections.

Andromischus subdistichus is a cute little succulent with short branching stems tightly packed with circular leaves.

Likely Aeonium (Greenovia) dodrantale forming multi-branching colonies of small rose buds.

Agapanthus Fireworks is a striking lily-of-the-Nile with bicolour flowers of violet blue and white.

Agapanthus 'Northern Star' has gorgeous bicolour flowers of dark blue with dark violet stripes down the middle of each petal.

Agapanthus 'Poppin' Purple' is a compact, fast-growing lily-of-the-Nile with violet purple flowers.

Agapanthus 'Summer Love Blue' has fragrant violet-blue flowers on strong green stems and green, strap-like foliage.

Agastache cana 'Double Bubble Mint' is a Texas hummingbird mint with fragrant magenta coloured flowers and aromatic foliage.

Agastache 'Blue Bayou' is a long-blooming hummingbird mint with blue tubular flowers and aromatic foliage.

'Crazy Fortune' is a sport of Agastache 'Blue Fortune' with lavender blue flowers and variegated foliage.

Agastache 'Danish Delight' is an anise hyssop with vibrant hot pink to reddish-purple blooms and fragrant green foliage.

Agastache 'Pink Pearl' is a stunning hummingbird mint with dense spikes of mid pink buds opening to glowing light pink flowers.

Agastache Meant to Bee 'Queen Nectarine' has soft peach flowers with mauve calyxes on tall three foot stems.

Agastache 'Royal Raspberry' is a long-blooming hummingbird mint with fragrant purple tubular flowers and aromatic foliage.

Agastache Sunrise 'Blue' is a long-blooming hummingbird mint with violet-blue tubular flowers and fragrant foliage.

Agastache Sunrise 'Rose' is a long-blooming hummingbird mint offering a beautiful display of tubular pink flowers.

Agave angustifolia var. letonae has long, sword-like leaves in shades of green to grey-green and can develop nice trunks.

Agave filifera var. schidigera has green leaves marked with silver-white and with curling threads along the leaf edges.

'Impressive' is a beautiful selection of Agave impressa with intricate white dotted lines across the bright green leaf blades.

Agave macroacantha is a beautiful medium-sized century plant with numerous bluish grey leaves each tipped with a bold black spine.