Nigel Cattlin / Farmer covering Cauliflower (Brassica oleracea botrytis) seedlings with polythene, Lincolnshire, UK, April.

Nigel Cattlin / Cauliflower (Brassica oleracea botrytis) with flowering curd, Devon, August.

Nigel Cattlin / Cauliflower (Brassica oleracea botrytis) bought cut and trimmed from supermarket, UK.

Nigel Cattlin / Three harvested 'Amadeus' Cauliflowers (Brassica oleracea botrytis) placed beside plant in field, Lincolnshire, UK.

Nigel Cattlin / Cauliflower (Brassica oleracea botrytis) with flowering curd, Devon, August.

Paul Harcourt Davies / Dyer's alkanet (Alkanna tinctoria), Basket of gold (Alyssum saxatile) and Star of Bethlehem (Ornithogalum umbellatum) in flower on rocky ground, Gargano, Puglia, Italy. April.

Paul Harcourt Davies / Rosy cress (Arabis collina) in flower, Santa Maria di Pulsano, Gargano, Puglia, Italy. April.

Paul Harcourt Davies / Gargano aubrieta (Aubrieta columnae italica) in flower on limestone rock, Monte Sant Angelo, Gargano, Puglia, Italy. April.

Paul Harcourt Davies / Golden alyssum (Alyssum saxatile) in flower on rocky limestone ground, nr Monte Saint Angelo, Gargano, Puglia, Italy. April.

Paul Harcourt Davies / Gargano pansies (Viola heterophylla graeca) with Golden alyssum (Alyssum saxatile) in flower at edge of woodland, nr San Giovanni Rotondo, Gargano Peninsula, Italy. April.

Paul Harcourt Davies / Seven-leaflet bittercress (Cardamine heptaphylla) flowering in woodland, Il Sasseto, Torre Alfina, Lazio, Italy. April.

Paul Harcourt Davies / Appennine treacle mustard (Erysimum pseudorhaeticum) in flower, Simbruini Mountains, Apennines, Italy, June.