Posted: 17/06/2015 at 21:39
That's a good point, Katherine, about food production vs cosmetic purposes. I am prepared to do whatever it takes to protect my fruit and vegetables, but am much more relaxed about ornamental plants, lawns etc.
It's the same with watering - my ornamental plants just have to make do with rainfall but I water the food crops as necessary. When we had a water shortage I was quite angry when farmers could use mains water on crops, while gardeners were not allowed to do so. I feel rather the same about using chemicals on food crops, although I can see that it would be impractical to ban certain substances from use on flowers and allow them on fruit and veg.
If I were to lose my whole tomato crop to blight or all my salads to slugs, I'd end up going to a shop to buy replacements which would almost certainly have been subjected to much higher levels of pesticides etc than I would have used - how often do you find a slug or aphids on a bought lettuce?