potatoes at any size but generally do not dig before tubers are 1 1/4 to 1 1/2 inches in diameter.  Let potatoes dry several hours in garden after digging.  Do not expose potatoes to sunlight for any length of time.  Remove adhering soil but do not wash before storage.  Store in cool, dry area.
Potatoes, sweet - Harvest late in fall but before first early frost.  Lift to avoid cuts, bruises and broken roots.  Remove adhering soil but do not wash.  Cure for at least 14 days in a warm, well ventilated location.  Store in a cool, dry place.
Pumpkins - Pick when the fruits are full size, the rind is firm and glossy and the bottom of the fruit is cream to orange colored.  Store in a cool, dry area.
Radishes - Harvest when diameter reaches approximately 1 inch.  Wash and chill immediately.
Rutabagas - Harvest when roots reach full size but before heavy fall frosts.  Thin early to insure rapid, uniform growth and highest quality. 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 in diameter 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.  The rind is firm and glossy and bottom of fruit is cream to orange in color.  Light frost will not damage mature fruit.  Squash like cucumbers, are susceptible to chilling injury; do not store at cold temperatures for more than 2 to 3 days.
Tomatoes - Harvest when they are fully colored but still firm.  Harvest red tomatoes for eating fresh, cooking or canning.  Do not can overripe tomatoes!  If necessary, pick mature green or slightly pink tomatoes and ripen at room temperature, out of direct sunlight.  Store ripe tomatoes in the refrigerator.
Turnips - Harvest when roots are 1 1/2  to 2 1/2 inches in diameter, but before heavy fall frosts.  For greens, harvest leaves 4 to 6 inches in length.  Keep topped turnips cold and humid.