Foxglove, Digitalis, Pink coloured flowers emerging from tall stem.

Poker Flower, Dicotyledon, Side view of yellow coloured flower growing outdoor.

Celsia, Great-Flowered Celsia, Verbascum Creticumm, Tall yellow flower stem growing outdoor covered in water droplets.

Golden Rod, Dicotyledon, Growing outdoor.

Sitka Spruce trees in fog, Samuel H Boardman State Scenic Corridor, Oregon, USA.

Japanese Maple tree in autumnal colours, Portland Japanese Gardens, Oregon, USA.

Buttercup, Meadow buttercup, Ranunculus acris, Single yellow flower growing outdoor amid green foliage.

Buttercup, Meadow buttercup, Ranunculus acris, Yellow flowers in a meadow in Upper Teesdale, North Pennines, Co Durham.

Buttercup, Meadow buttercup, Ranunculus acris, Yellow flowers in a meadow in Upper Teesdale, North Pennines, Co Durham.

Buttercup, Meadow buttercup, Ranunculus acris, Yellow flowers in a meadow in Upper Teesdale, North Pennines, Co Durham.

Coneflower, Cutleaf coneflower, Rudbeckia laciniata 'Juligold', Yellow coloured flower growing outdoor.

Buttercup, Meadow buttercup, Ranunculus acris, Mass of small yellow coloured flowers growing outdoor.