Stephen Dalton / Orange tip butterfly (Anthocharis cardamines) male in flight amongst Lady's smock or Cuckooflower (Cardamine pratensis),England.

Edwin Giesbers / Orange tip butterfly (Anthocharis cardamines), two females on Cuckooflower (Cardamine pratensis) in marshy grassland, egg visible on stem. April 2009.

Edwin Giesbers / Orange tip butterfly (Anthocharis cardamines) two females on Cuckooflower (Cardamine pratensis). The Netherlands. March.

Edwin Giesbers / RF - Green-veined white butterfly (Pieris napi) on Cuckooflower (Cardamine pratensis), in meadow amongst Buttercup (Ranunculus sp) flowers. The Netherlands. March. (This image may be licensed either a...

Alex Hyde / Orange-tip butterfly (Anthocharis cardamines) egg and newly-emerged caterpillar on seed pod of Garlic Mustard (Alliaria petiolata). Peak District National Park, Derbyshire, UK. May. Focus stacked imag...

Alex Hyde / Orange-tip Butterfly egg (Anthocharis cardamines) on seed pod of Garlic Mustard (Alliaria petiolata). Peak District National Park, Derbyshire, UK. May. Focus stacked image.

Michael Hutchinson / Female Goldenrod spider (Misumena vatia) on Annual honesty (Lunaria annua) flower, trying to catch a hoverfly, Bristol, England, UK, April.

Michael Hutchinson / Wide angle shot of a female Goldenrod spider (Misumena vatia) on Annual honesty (Lunaria annua) flower, with flies flying nearby, Bristol, England, UK, April.

Michael Hutchinson / Close-up of a female Goldenrod spider (Misumena vatia) on Annual honesty (Lunaria annua) flower, feeding on hoverfly prey, Bristol, England, UK, April.

Michael Hutchinson / Close-up of a female Goldenrod spider (Misumena vatia) catching a hoverfly, on Annual honesty (Lunaria annua), Bristol, England, UK, April.

Guy Edwardes / Field of flowering Poppies (Papaver rhoeas) at sunrise, Val d'Orcia, Tuscany, Italy. May 2019.

John Shaw / Abandoned house in middle of a wheat field. Palouse farming area, south eastern Washington, USA, August.

Jack Dykinga / Massive wildflower display Lanceleaf monolopia 1+Monolopia lanceolata+2 Great Valley phacelia 1+Phacelia civiliata+2 and purple Lemmon's mustard 1+Caulanthus anceps+2 The Temblor Range in evening...

Dave Bevan / Large white (Pieris brassicae) caterpillars eating Broccoli (Brassica oleracea) leaves, with Small white (Pieris rapae) caterpillars, Carmarthenshire, Wales, UK. September.

Cyril Ruoso / Oilseed rape (Brassica napus) fields in flower, Burgundy, France, May.

Alex Hyde / Orange tip butterfly egg (Anthocharis cardamines) on Cuckoo flower / Lady's smock (Cardamine pratensis). Peak DIstrict National Park, Derbyshire, UK. May.

Simon Colmer / Green-veined White butterfly egg (Pieris napi) above, Orange-tip butterfly egg (Anthocharis cardamines) below, on Garlic mustard (Alliaria petiolata) Sussex, UK. June.

Gary K. Smith / Marsh harrier (Circus aeruginosus) adult female circling over Oilseed rape crop, Norfolk, England, May. Digital composite.

Nick Upton / Pollen and nectar flower mix strip with Mustard (Brassicaceae), Common sainfoin (Onobrychis viciifolia) and Red clover (Trifolium pratense) bordering a Barley crop (Hordeum vulgare), Marlborough Downs...

Paul Harcourt Davies / Floral colour in fields on the Piano Grande from Poppies (Papaver rhoeas), Cornflowers (Centaurea), Mustard (Brassica) and Mayweed (Anthemis), Umbria, Italy, June

Visuals Unlimited / Male Spring peeper frog (Hyla crucifer) calling, North America.

Alan Williams / Small tortoiseshell butterflies (Aglais urticae) on Wallflower (Erysimum) in garden, Cheshire, UK, July.

Nick Upton / Organic suburban garden with Apple (Malus domestica) tree in foreground, vegetables growing in beds iinclude Broad bean (Vicia faba), Lettuce (Lactuca sativa) and Kale (Brassica oleracea). Houses in b...

Nick Upton / Water cress (Nasturtium officinale). Wiltshire, England, UK. May.

Linda Pitkin / White mustard (Sinapis alba) growing as a sacrificial crop for birds. Beddington Park, Surrey, England, UK. July.

Linda Pitkin / Wild radish (Raphanus raphanistrum raphanistrum) growing in sacrificial crop for birds. Beddington Park, Surrey, England, UK. July.

Linda Pitkin / Water-cress (Nasturtium officinale). River Wandle, Surrey, England, UK. July.

Linda Pitkin / Field pepperwort (Lepidium campestre), Surrey, England, UK. June.

Linda Pitkin / Wild candytuft (Iberis amara). Priest Hill Surrey Wildlife Trust Reserve, England, UK. June.

Linda Pitkin / Danish scurvygrass (Cochlearia danica) on road verge. Surrey, England, UK. March.

Linda Pitkin / Danish scurvygrass (Cochlearia danica) on road verge. Surrey, England, UK. March.

Jussi Murtosaari / Large white butterfly (Pieris brassicae) caterpillars and frass on Sea kale (Crambe maritima). Korpo, Finland. September.

Ernie Janes / Naturalised wallflowers (Erysimum sp) growing on church wall, Norfolk, England, UK, April.

Colin Varndell / Shepherd's purse (Capsella bursa-pastoris) in flower. Dorset, UK. June 2019

Erlend Haarberg / Common scurvygrass (Cochlearia officinalis) amongst rocks. Varanger, Norway. June.

Fabrice Cahez / Wavy bittercress (Cardamine flexuosa) close up of flower, France, May.

Chris Mattison / Orange-tip caterpillar, (Anthocharis cardamines), pupated on Garlic mustard (Alliaria petiolata), one of its foodplants. Wales, UK. June.

Chris Mattison / Orange-tip caterpillar, (Anthocharis cardamines), on Garlic mustard (Alliaria petiolata), one of its foodplants.

Chris Mattison / Orange-tip caterpillar, (Anthocharis cardamines), recentrly pupated on Garlic mustard (Alliaria petiolata), one of its foodplants. Wales, UK. June.

Chris Mattison / Orange-tip caterpillar, (Anthocharis cardamines), starting to p[upate on Garlic mustard (Alliaria petiolata), one of its foodplants.

Chris Mattison / Orange-tip caterpillar, (Anthocharis cardamines), on Garlic mustard (Alliaria petiolata), one of its foodplants. Wales, UK. June.

Paul Harcourt Davies / Yellow whitlow grass (Draba aizoides). Col di Rodella, Dolomites, Trentino, Italy. June.

Paul Harcourt Davies / Alpine rockcress (Arabis alpina) growing amongst rocks. Ciampac, Fassa Valley, Dolomites, Trentino, Italy. June.

Paul Harcourt Davies / Chamois cress (Hornungia alpina) at 2762m. Near Refugio Lagazuoi, Falzarego Pass, Cortina, Dolomites, Italy. July.

Paul Harcourt Davies / Alpine pennycress (Thlaspi caerulescens) amongst rocks. Fedaia Pass, Dolomites, Belluno, Italy. June.

Nick Upton / Cuckoo flower / Lady's smock (Cardamine pratensis) clump flowering on a marshy water meadow, Wiltshire, UK, April.

Nick Upton / Cuckoo flower / Lady's smock (Cardamine pratensis) clump flowering on a marshy water meadow, Wiltshire, UK, April.

Edwin Giesbers / Green-veined white butterfly (Pieris napi) on Cuckooflower (Cardamine pratensis) in evening light. The Netherlands. March.