Store in refrigerator. Spinach - Harvest when large leaves are 4 to 6 inches long. Pull larger, whole plants or harvest older leaves and allow new growth to develop. Wash leaves thoroughly and store in refrigerator. Squash - Harvest when fruit is 4 to 6 inches long for yellow crookneck squash 6 to 8 inches for yellow straight neck and 3 to 4 inches in diameter for white scallop.
Glossy color indicates tenderness.
Harvest winter squash when fruits are full size. Light frost will not damage mature fruit. Tomatoes - Harvest when they are fully colored but still firm. Harvest red tomatoes for eating fresh cooking or canning. If necessary, pick mature green or slightly pink tomatoes and ripen at room temperature, out of direct sunlight.