Origanum libanoticum has pendulous pink, white or pale green, hop-like flower heads revealing small rose-pink flowers

Origanum 'Gilt Trip' is an ornamental oregano with lilac flowers, mauve calyxes and aromatic, chartreuse-yellow foliage.

Origanum 'Kirigami' forms mounds of aromatic, light green foliage and purple, pink, and green, hops-like inflorescences.

Origanum 'Amethyst Falls' is an ornamental oregano with cool shrimp-like pink and amethyst flowers.

Origanum 'Bellissimo' is an ornamental oregano with pendulous purple-pink and white hop-like flower heads and green hop-like foliage.

Origanum 'Drops of Jupiter' is an ornamental oregano with pink flowers and aromatic, chartreuse-yellow foliage.

Origanum 'Kent Beauty' has cute shrimp-like, pink flowers held in pendulous clusters from blue-green foliage.

Ornithogalum nutans has spikes of fragrant, outward-facing to slightly nodding, star-shaped flowers coloured white and grey-green.

Ornithogalum pyramidale forms pyramidal spikes of fragrant, outward-facing, pure white, star-shaped flowers with green-striped reverses in early summer.

Ornithogalum reverchonii is a rare star-of-Bethlehem with spikes of fragrant, outward-facing, pure white, bell-shaped flowers on stems 24-36 inches tall.

Ornithogalum saundersiae is a South African bulb with clusters of fragrant, upward facing, white flowers on long stems.

Orostachys ‘Chinese Hat’ is a succulent hybrid that forms succulent rosettes of pale silver/grey foliage with yellow flowers.

Orostachys japonica is a hardy rosette succulent with many cylindrical, pointed, light green leaves that can flush orange.

Osmanthus fragrans has fragant white flowers aging to yellow. Used in China in teas and desserts.

Osmanthus fragrans f. aurantiacus has small, orange, extremely fragrant, edible flowers famous in China for use in teas and other foods.

Osmanthus fragrans f. thunbergii has small, pale yellow, extremely fragrant, edible flowers famous in China.

Osmunda cinnamomea, the cinnamon fern, has lush green vegetative fronds and cool rusty orange sporophytic fronds.

Othonna capensis or little pickles is an extremely hardy ground-covering succulent with blue-green leaves and yellow daisy flowers.

Pachyphytum bracteosum 'Silver Jelly Bean' is an Echeveria relative with thick, oval, silver-blue leaves and yellow flowers.

Pachyphytum compactum has thick, rounded, pointed, grey-green leaves with white crystal-like markings.

Pachyphytum oviferum is a gorgeous succulent with palest silver blue, rounded, balloon-like leaves that can flush pink.

Pachyphytum rzedowskii has cylindrical, succulent leaves with pointed tips in shades of bluish white flushing purplish.

Pachyphytum bracteosum is an Echeveria relative with thick, rounded, silver-blue leaves.

Pachyphytum 'Blue Haze' has broad, flattened, rounded, succulent leaves that can be silver blue or flush with pink.

Pachyphytum 'Pink Bunny' has broad, flattened, succulent leaves that can be palest silver blue or flush with pink with a little stress.