Kerria, Kerria japaonica 'Pleniflora', Yellow coloured flower growing outdoor.

Kerria, Kerria japaonica 'Pleniflora', Yellow coloured flower growing outdoor.

Kerria, Kerria japaonica 'Pleniflora', Yellow coloured flower growing outdoor.

Birch tree, Betula cultivar, Yellow flowers growing outdoor.

Birch tree, Betula cultivar, Yellow flowers growing outdoor.

Dandelion, Taraxacum officinale, Yellow coloured flowers growing outdoor with butterfly.

Dandelion, Taraxacum officinale, Yellow coloured flowers growing outdoor with butterfly.

Dandelion, Taraxacum officinale, Yellow coloured flowers growing outdoor.

Sunflower 'The Bees Knees', Helianthus annuus 'The Bees Knees', Yellow flower growing outdoor.

Poppy, Californian poppy, Eschsclolzia califonica, Open yellow flower head showing stigma, filaments and stamen.

Begonia, Hanging open white flower head with a touch of yellow in the centre.

Red hot poker, Kniphofia, Two red and yellow coloured flowers growing outdoor.