Plant a mix of varieties suitable for your area: a couple of slicers, a cherry type, a beefsteak, and something unusual, like striped ‘Green Zebra’ or the ‘Blue Beauty’, which is high in antioxidants. And choose early-, mid-, and late-season varieties, indicated on labels as “days to maturity” (DTM). That way, says tomato-growing expert Scott Daigre, “you’ll get lucky. If it’s too hot for some varieties to set fruit in midsummer, others will.”