Lost half my tomatoes to the dreaded yellow leaf with brown spots, however I got a reasonable crop of a dozen full size tomatoes and over two hundred marble sized Golden Cherry, Tumbling Tom and Tiny Tim.
Lavender attracts the bees.
My great-neice contributed two good ideas. Garlic grows very easily. The shoots taste mildly garlicy and peppery, a nice addition to salads. Spring onions put into water will continue growing.
I find the living lettuce grows more successfully and lasts longer if divided into two pots. Love my salads!