Clematis Vancouver 'Danielle' has deep purple blue flowers with striking red tipped stamens.

Clematis Vancouver 'Fragant Star' has a vanilla fragrance that is quite unique for a large, white flowered clematis.

Clematis Vancouver 'Morning Mist' has large soft pink flowers with a frilled pink edge and striking yellow stamens.

Clematis Vancouver 'Mystic Gem' has large pink and white flowers with red stamens.

Clematis Vancouver 'Plum Gorgeous' produces velvety, plum coloured blooms that fade to a purple-blue.

Clematis Vancouver 'Sea Breeze' has lavender colored wavy edged tepals and sometimes have a somewhat rosy tone.

Clematis Vancouver 'Starry Night' has flowers that are a brilliant purple with a red bar, or blue with a mauve bar.

'Violet Stardust' is a bush clematis with violet-blue, star-shaped flowers followed by pretty seed heads.

Clethra alnifolia 'Hummingbird' is a compact shrub with white bottlebrush flowers that are fragrant and nectar-rich.

Clethra alnifolia 'Ruby Spice' is a compact shrub with pink and white bottlebrush flowers that are fragrant and nectar-rich.

Clethra alnifolia 'Summer Sparkler' is a compact shrub with long, twisting racemes of white flowers that are fragrant and nectar-rich.

Codonopsis clematidea produces pale blue, bell-shaped flowers yellow, orange, dark purple, and maroon inside.

Colchicum autumnale 'Album' is a vigorous cultivar with vase-shaped, snow white flowers produced in profusion.

Colchicum autumnale 'Nancy Lindsay' has bright mauve-pink flowers with a white line down the middle of each petal.

Colchicum autumnale 'Pleniflorum' (syn. 'Roseum Plenum') has double violet-pink flowers produced in profusion.

Colchicum byzantinum (syn. C. autumnale var. major) produces large bright mauve-pink flowers.

Colchicum byzantinum 'Innocence' is a beautiful autumn crocus with large white petals flushed with pink.

Among the largest of the autumn crocus, Colchicum macrophyllum has long, pointed, tesselated petals in pink and white.

Colchicum speciosum 'Atrorubens' is a vigorous plant with deep pink to wine purple flowers with icy white centres atop purple stems.

Colchicum x agrippinum is an easy-to-grow autumn crocus producing multiple flowers that are checkered with pink and white.

Colchicum 'Jarka' is a vigorous plant with deep violet-pink flowers tipped with white.

Colchicum 'Violet Queen' is a vigorous plant with bright purple, tesselated flowers with white lines down the throats.

Colchicum 'Waterlily' is one of the most beautiful of the autumn crocus producing multiple double-petaled, lavender-pink flowers per bulb.

Colocasia esculenta is a taro or elephant ear with large, shiny, green tropical foliage.