Thanks. I have saved seed before but it hasn't been particularly successful. I saved carrot and parsnip but there was poor germination and rather small veg. I've had more success with flowers like nasturtiums and marigold but they tend to self-seed anyway. I'll give it a go with lettuce.
My neighbour saved the seeds from capsicum (red bell peppers) that they'd kept, dried and planted in Spring. They gave me 3 small plant pots with approximately 4 inch plants in them. I put them on the kitchen window sill and cropped about a dozen small, very sweet and tender mini capsicums. When I think of how many seeds are inside bell peppers, that I normally just throw away!
A couple of years ago we were inundated with snails. I spent ages picking them off my garden. We have not had as many as that since and I have not put down slug pellets but dropped them in a bucket of water.
I love growing my plants (mostly flowers) from seeds, I get a great satisfaction watching as they develop in the greenhouse. For some years I did collect the seeds from the plants that grew, but I had very mixed results as to germination. In many cases the second generation were a poor shadow of the parent plants and some never grew at all. I prefer to just buy packet seeds each year.
I save flower seeds; things like zinnias, calendula, snap dragons, lupins; but even when we had an allotment, the only veg seeds I saved were peas and beans and germination was often hit and miss. Not sure whether, with so many vegetable varieties being F1 hybrids, you’d get the same result - or indeed any result - from saved seed. I’m happy to be corrected.