Photo of a cabbage white butterfly on a flower

Insects by Paul Freeborough (Volunteer)

Back in the 1980’s I was lucky enough to ask a question on radio’s Gardeners’ Question Time. Much to my teenage daughter’s embarrassment, my question was: “I have whitefly on my brassicas, can the panel recommend a remedy?” It turned out that the whitefly were harmless and could be washed off with a hose. There…