Just like our changing perceptions of weeds. Who would have thought 100 years ago that we would be planting 'Wild Flower Gardens' or weed patches.
Could it be that in the near future we will be trying to farm grasshoppers and worms as tasty delicacies. The French are fond of Frogs and Snails and I remember ant farms being a popular children's toy a few years back (until the occupants escaped).Remember being horrified by the Japanese eating raw fish, and now sushi restaurants are really popular?
We often see Asian markets on TV with stalls selling crispy scorpions and other strange creatures to eat, and then there are the bush tucker trials on TV.
So maybe in a few years time we will be growing lettuce in the greenhouse, not to eat, but to encourage some delicious slugs and snails maybe served on a bed of lettuce with a side order of greenfly sauce.
It is a shame that we have forgotten what wild plants are edible, I remember eating young hawthorn leaves on my way home from school and calling them bread and cheese. Maybe it is time to become a forager and get away from the blandness of supermarket. A lady at my Tai Chi class was telling me about a foraging course that she had been on which sounded really interesting although she was a little uneasy making a meal for the family.
The trouble is how to be sure what is safe to eat, some plants are safe to eat, but a very similar one may be totally poisonous. We used to pick wild mushrooms for breakfast which were delicious, but now we see horror stories in the papers about poisonous toadstools that look like mushrooms.
One solution that I have found is to buy a packet of seeds of some wildflowers and grow my own. It seems a little crazy, but as you probably know, it is really easy to grow weeds. My excuse is that I wanted a supply of some particular bittering herbs for brewing.
Our ancestors would have known all about this but we never listened.