Common oak, Quercus robur, leaves infested with the common spangle gall caused by the cynipid wasp.

Chilli pepper, Capsicum annuum 'Zimbabwe black', purple flowers and buds with a small black chilli and purple tinged leaves.

Chilli pepper, Capsicum annuum 'Zimbabwe black', purple flowers and buds with a small black chilli and purple tinged leaves.

Chilli pepper, Capsicum annuum 'Zimbabwe black', purple flowers turning into a small black chilli and purple tinged leaves.

Sea holly, known as Miss Wilmott's ghost, Eryngium giganteum, spikey silvery leaves in soft focus creating a wintery abstract pattern.

Smoke bush, Cotinus coggygria 'Royal Purple', masses of tiny flowers with dark purple leaves behind and contrasted against golden foliage in soft focus.

Sweet leaf, Stevia rebaudiana, a natural sweetener. Close up of 2 single leaves showing serrated edges, cut out against white.

Sweet leaf, Stevia rebaudiana, a natural sweetener. Close up of sprig showing serrated leaves cut out against white.

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.

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