Salad mixes are cool-season essentials—quick, easy, and tasty. Sow seeds before cold weather sets in (plants mature in about six weeks). Our pick: Baby Red Mix from Cook’s Garden (cooksgarden.com), for its colors, flavors, and textures. For cooking, try Renee’s Stirfry Mix, from Renee’s Garden Seeds (reneesgarden.com). It blends Asian red kale with tangy red mustard, mizspoona (a new cross between sweet mizuna and succulent tatsoi), and a white-stemmed pak choi.