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

Gladiolus nanus 'Impressive' has orchid-like, light pink flowers with bold red and magenta prints on the upper three petals.

Gladiolus 'Bibi' is an exotic-looking light pink gladiolus with dramatic fuchsia detailing. Every flower is different.

Gladiolus 'Irish Gold' is a hardy gladiola with large, ruffled yellow flowers with a green glow

Gladiolus x colvillei 'Red Drizzle' is a stunning hardy gladiola with deep cherry red flowers with faint white markings.

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

Gloriosa carsonii has striking flowers with yellow rippled petals centred with burgundy-red.

Gloriosa greenii offers greenish yellow to lemon yellow flowers with thick, leathery, lightly rippled petals.

Gomphocarpus physocarpus (previously Asclepias) is a cool milkweed relative known as balloon plant or hairy balls!

Goodyera oblongifolia is a terrestrial orchid that spreads into small colonies of evergreen, ornately-variegated leaves.

Graptopetalum bellum (aka Tacitus bellus) has grey-green rosettes and one of the most beautiful flower displays with starry, bright pink flowers.

Graptopetalum filiferum is an intriguing species related forming a tight, symmetrical rosette of grey-green leaves each with a pink, hair-like tip.

Grewia asiatica is a small deciduous shrub known as sherbet berry that produces sour-sweet edible purple berries.

The oak fern, Gymnocarpium dryopteris, is a native garden-worthy fern with beautiful dainty fronds in shades of vibrant green.