Sweet leaf, Stevia rebaudiana, a natural sweetener. Close up showing serrated leaves.

Sweet leaf, Stevia rebaudiana, a natural sweetener. Close up showing serrated leaves.

Sweet leaf, Stevia rebaudiana, a natural sweetener. Close up showing serrated leaves.

Cornflower, Centaurea cyanus 'Double blue'.

Brussel sprout,Brassica oleracea var. gemmifera 'Nautic', seedlings growing in small pots.

Swiss chard, Beta vulgaris 'Bright Lights', close up of the colourful stems.

Coffee, Coffea arabica, flower clusters on stem with beans forming.

Coffee, Coffea arabica, close up of flower with beans forming behind.

Rice, Oryza sativa close up.

Rice, Oryza sativa close up.

Sunflower, Helianthus annuus, bouquet of flowers in an antique metal can in the garden.

Sunflower, Helianthus annuus, bouquet of flowers in an antique metal can in the garden.