Nigel Cattlin / St John's wort (Hypericum perforatum), Bladder campion (Silene vulgaris) hedge bedstraw (Galium mollugo) flowering in high summer on chalk downland, Berkshire, June

Nigel Cattlin / Gall of a bedeguar gall wasp (Diplolepis rosae) or robin's pincushion on the stem of a wild dog rose, Rosa, canina, Berkshire, September

Nigel Cattlin / Immature potato crop in even ridged rows converging towards the the horizon on a rising field

Nigel Cattlin / Neat rows of weed-free young sugar cane (Saccharum officinarum) crop with palms behind on the island of Negros in the Philippines

Nigel Cattlin / Black nightshade plant (Solanum nigrum) a young plant of an annual arable weed with several true leaves, Berkshire, July

Nigel Cattlin / Grey mould (Botrytis cinerea) rotted Lemon fruit (Citrus limon) on the tree, Campania, Italy, May

Nigel Cattlin / Hairy bittercress (Cardamine hirsuta) young plant rosette on soil, Devon, England, UK, April.

Nigel Cattlin / Japanese knotweed (Reynoutria japonica) flowering plants on waste ground, Devon, England, UK. September

Nigel Cattlin / Japanese knotweed (Reynoutria japonica) flowering plants on waste ground, Devon, England, UK. September

Nigel Cattlin / Japanese knotweed (Reynoutria japonica) flowering plants on waste ground, Devon, England, UK. September

Nigel Cattlin / Leaf & pod spot (Alternaria brassicae) discreet black lesions on the stem and seed pods of oilseed rape crop