Judicious thinning, replanting, gifts, and sales use of the surplus seedlings. Litter and mulch preserve soil organisms, and the steady temperature and moisture conditions which encourage other organisms hostile to the Phytophora fungi. Another way to protect soils, preserve moisture and prevent weeds is to develop a living mulch of herbs such as mint and lemon balm. In fact it is difficult not to. Garlic bulbs, if allowed to multiply for two years give a constant crop.
Corn is a good interplant for summer.
Seed potatoes can be left under mulch to sprout in spring, and lettuces let go to seed will scatter seedlings around their base for replanting. Parsley and many flat-seeded species reseed freely in mulch, and their seedlings can be set out to grow. Some people keep carrot tops in a dark or cool place, let them sprout again, and set them out to grow in soft soil. Others cut their cabbages low, split the stalk crosswise with a knife, let small spouts start, then divide up the root mass and replant. All these methods eliminate resowing or making seed beds, and keep the garden turning over crop.