'Little Janie' has gorgeous bicolour flowers with rose-pink grading towards pure white with darker pink veins. A unique colour form in Gaura.

Gaura 'Sparkle White' has elegant, white, butterfly-like flowers that wave in the wind on two foot stems.

Gaura lindheimeri Walberton's 'Silver Fountain' has variegated foliage and spikes of pink buds opening to white flowers.

Geranium ‘Double Jewel’ has star-shaped double white flowers accented with a flare of pink-purple at the centre.

'Laura' has charming white double flowers that stand out nicely against the mid green foliage.

It's a bloody cranesbill but with pure white flowers against lush green foliage.

Geranium 'Coombland White' flowers emerge white with the palest pink blush quickly aging to pure white all with thin, purple-red veins.

Gerbera Garvinea 'Sweet Frosting' has snow white flowers with yellow and brown centres blooming from spring to fall. Hardy to zone 7!

Gethyllis oligophylla has cool grey-green spiralled leaves and white, fragrant flowers.

Gethyllis oliverorum has cool grey-green spiralled leaves and white, fragrant flowers.

Gillenia trifoliata is worthy of more attention with elegant white flowers with wine-red sepals like a Gaura for shade.

Gladiolus nanus 'Carine' has orchid-like, ivory white flowers with bright pink markings and a green flush in the throat.

Gladiolus nanus 'Elvira' has orchid-like, palest pink flowers with bold dark pink spots and a dark pink throat.

Gladiolus nana is a smaller, hardy Gladiolus native to Africa. 'Halley' has ivory flowers with creamy centres.

Gladiolus nanus is a smaller, hardy gladiola. 'Nymph' has white florets with pretty, hot pink markings.

Gladiolus 'Prins Claus' has orchid-like, pure white flowers with bold magenta and pink spots on the three lower petals.

Gladiolus 'Frozen Sparks' is a hardy gladiola with large, ruffled white flowers tipped and speckled with deep pink or purple.

Gladiolus 'Galaxian' is a dramatic hardy gladiola with dark pinky red and white flowers that look like bicolour butterflies.

Gladiolus 'The Bride' has funnel-shaped white flowers 5 cm wide with creamy middle vein.

Gladiolus 'My Love' offers white flowers gently edged with pretty pink blushes on 3-4 foot stems.

Glaucidium palmatum 'Album' is a choice Japanese woodlander with large, silky, creamy white blossoms over attractively textured foliage.