Cortaderia 'Blue Bayou' is a dwarf pampas grass with blue foliage and classic white flower plumes on plants of a manageable size.

Corydalis solida 'Beth Evans' is an exquisite spring ephemeral with masses of pink tubular flowers. Choice.

Corydalis solida 'Firebird' is the best red Corydalis, producing sweetly fragrant flowers above finely dissected, fern-like foliage.

Corydalis 'G.P. Baker' has amazing near-red flowers atop delicate bluish-green foliage in spring.

Corydalis solida 'Purple Bird' has warm purple flowers atop delicate bluish-green foliage in spring.

Corydalis solida 'White Knight' is an exquisite spring ephemeral with masses of pure white tubular flowers.

Crassula 'Hummel's Sunset' is a gold version of the jade plant with red leaf edges.

Crocosmia 'George Davidson' has bright orangey-yellow flowers in summer. A magnet for hummingbirds.

Crocosmia masoniorum is a giant montbretia with blazing-orange flowers. A magnet for hummingbirds and butterflies.

'Carmine Brilliant' is a stunning Crocosmia with carmine-pink flowers, scarlet-orange on the reverse and with cheery, yellow throats.

A hummingbird magnet with red tubular flowers, Crocosmia 'Lucifer' is the best of the genus.

Crocosmia 'Okavango' is a hummingbird magnet with apricot-orange tubular flowers.

Crocosmia ‘Emily Mackenzie’ offers extra large, dark orange flowers with yellow throats each surrounded by a red ring.

Crocosmia 'Honey Angels' has bright yellow tubular flowers in summer. A magnet for hummingbirds.

Crocosmia 'Orange Pekoe' is a montbretia with multi-coloured flowers of reddish orange, orange, and yellow. A hummingbird magnet.

Crocosmia 'Peach Melba' is a montbretia with vivid dark orange flowers atop tall, spiky, sword-like foliage.

Crocosmia 'Prince of Orange' has vivid red-orange blossoms with burgundy speckled gold centres. Interesting seedpods in fall.

Crocosmia 'Spanish Ballerina' has vivid bi-coloured red and yellow flowers atop tall, spiky, sword-like foliage.

Crocosmia 'Sunglow' is a montbretia with brilliant yellow flowers atop tall, spiky, sword-like foliage.

Crocus cartwrightianus is a fall-flowering species with palest mauve flowers with purple feathers.

Crocus cartwrightianus 'Albus' has pure white flowers in fall with deep orange pistils and yellow anthers.

Crocus goulimyi is fall-flowering with goblet-shaped, lavender flowers on long tubes.

Crocus laevigatus 'Fontenayi' is a rare fall-flowering species with lovely lavender flowers with dark purple markings.

Crocus ochroleucus is a white fall-flowering species with a beautiful, delicate shape.