Gaillardia Commotion 'Moxie' is a blanket flower with warm yellow fluted petals around orange-red centres. Mounds of colour all summer long.

'Colorado Gold' is an unusual, super hardy Gazania with narrow, dark green foliage and large, bright yellow, daisy-like flowers.

Gelsemium 'Margarita' is a hardy Carolina jessamine with masses of large, bright yellow flowers on a semi-evergreen vine.

Gerbera Garvinea 'Sweet Vibe' is a Gerber daisy with yellow petals and dark centres that blooms from spring to fall. Hardy to zone 7!

'Tequila Sunrise' is a Geum with semi-double flowers with lemony yellow petals and flushes and edges of rose-red.

Geum Tempo Yellow produces multicoloured, semi-double flowers in shades of pink, peach, yellow, and creamy yellow all at the same time.

Gladiolus primulinus 'Las Vegas' is a hardy glad with yellow funnel-shaped flowers with broad orange-red borders.

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

Gladiolus 'Goldrush' has delicately ruffled yellow blooms edged with an orange-coppery glow.

Globba schomburgkii has large, dark green, tropical leaves and large, golden yellow clusters of branched, ginger-like flowers.

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

Gloriosa lutea has pale lemon-yellow flowers that are crisped on the edges and turn orange-yellow as they age.

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