Gaillardia Commotion 'Frenzy' is a blanket flower with fluted firey red flowers tipped with yellow.

Gaillardia 'Fanfare Blaze' has red and orange flaming blanket flower pinwheels from spring until fall in containers or the garden.

Gasteria 'Little Warty' has light grey-green leaves with raised pale silvery-green stripes with bumpy tubercles.

Gasteria 'Silver Bullion' is an intriguing variegated succulent in shades of forest green, grey-green, light green and ivory white.

Geranium 'Jolly Jewel Red' forms dense, low cushions of bluish-green leaves bearing magenta-red flowers with deep magenta-black centres.

Gerbera Garvinea Sweet Glow has fiery orange red flowers around a yellow centre, blooms from spring until fall, and is hardy to zone 7!

Gerbera Garvinea Sweet Love is a Gerbera daisy with red petals and red and yellow centres that blooms from spring to fall. Hardy to zone 7!

Geum 'Sangria' has big, firey red flowers are produced above mounds of fuzzy green leaves.

Geum 'Scarlet Tempest' is an avens that produces a multitude of semi-double flowers or red-orange with yellow centres.

Geum Tempo 'Coral' is a compact avens that produces a multitude of semi-double coral-red flowers.

Gladiolus papilio 'Ruby' is a hardy glad with stunning, bright magenta red flowers.

Gladiolus primulinus 'Atom' is a 1946 hybrid with graceful, scarlet flowers with a white picotee edge.

Gladiolus primulinus 'Laura Jay' is a hardy glad with funnel-shaped flowers with red and white contrasting petals.

Gladiolus x colvillei 'Claudia' is a stunning hardy glad with rich red flowers with white highlights.

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

Gladiolus 'Buccaco' is known as the Chocolate Gladiolus with gentle shading of burnt orange to brown with creamy white streaks.

Gladiolus 'Rostov' displays blends of red, blue and pink on ruffled flowers.

Gladiolus 'Stereo' displays contrasting colours of red and sunny yellow on tall stems.

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

Gloriosa superba 'Himalayan Select' is a rare selection with bright, firey red flowers with recurved tepals (frequently more twisted than the picture) and a lemon-yellow base.

Gloriosa superba 'Rothschildiana' has striking flowers with broad, bright red, rippled petals with golden yellow bases.