The heat-loving squash-melon-cucumber family are the last of the seedlings to be started. They’re coming up now and headed for the field as soon as they’ve fully emerged, no waiting for true leaves. Depending on the crop, each pot has 2, 3 or 4 seedlings to be transplanted together, with extra space between pots. This replaces single planting and spacing, which saves transplanting time and makes early cultivation easier.