How to Preserve Fruits and Vegetables

Canning, Drying, Pickling & Making Jams and Jellies from Your Garden Harvest

By Marie Iannotti,

When you’re lucky enough to have an abundant harvest or to live close enough to farms to take advantage of farmer’s markets, you’ll want to put every last tomato and peach to good use. Preserving the harvest can let you enjoy the fruits of your labor for months to come. There are several methods for preserving your fruits, vegetables and herbs. Which method you choose will depend on the type of fruit or vegetable you are preserving and your ambition level.

The National Center for Home Food Preservation has an excellent, up-to-date web site with information on all types of food preservation. Specific links are listed below, along with some general tips and recipe suggestions. We may live in the age of supermarkets, but you’re still going to need some help finding uses for all those end of the season green tomatoes.

Farm Spotlight

Houdes Tree Farm
171 Berlin RoadMarlborough MA 01752
(508) 485-1609

Storing Fruits and Vegetables

Storing is the easiest method for keeping your harvest, but most vegetables don’t have a long shelf life. There is an excellent listing here of vegetables from beets to winter squash and the best methods and duration for storage. Root vegetables and vegetables that can be cured, like onions and winter squash, will last the longest.

Some basic tips for storing fruits & vegetables:

  • Only store fully mature, healthy vegetables. Any bruised or immature vegetables should be eaten fresh or preserved by other means.
  • Clean of soil and allow the outside of vegetables to dry before freezing.
  • Keep a few inches on stem on winter squash and also cut the green tops of root crops to an inch or so.

Freezing Fruits and Vegetables

Many vegetables keep well in the freezer. When blanched and frozen soon after harvesting, this can be the best method for retaining nutrients, as well as color, texture and flavor. Most vegetables can last 8 – 12 weeks in the freezer.

Some basic tips for freezing fruits & vegetables:

  • Freeze food immediately after packaging.
  • Keep freezer temperature at 0 degrees F. Or lower. You can set your freezer control for -10 degrees F. the day before freezing, to speed the process.
  • Don’t try to pack your freezer with unfrozen produce. This will only lower the temperature in the freezer and lengthen the time needed for the produce to chill.


Canning is a great method for preserving fruits and vegetables with a high water content, like tomatoes, mushrooms, beans and peaches, but it is essential you follow canning guidelines to the letter.

Some basic tips for canning fruits & vegetables:

  • Choose only disease free fruits or vegetables and wash them well before processing
  • Use clean jars and new seal lids
  • Process in boiling water or a pressure canner for the specified amount of time


Drying fruits, vegetables and herbs is also a very easy process and can be done without any special equipment or speeded up by using the oven or a dehydrator. Dried fruits, seeds, jerky, leather and even popcorn can be done by these methods.

Some basic tips for drying fruits, vegetables & herbs:

  • Be sure the fruits and vegetables are fully mature and disease free.
  • Provide good air circulation while drying, to prevent spoilage.
  • Don’t rush the process. Partially dried fruits, vegetables and herbs won’t last long.


Cucumbers come to mind when we think of pickling, but many vegetables and fruits can be preserved in this manner, including peppers, cauliflower, apples and pears. Relishes are also prepared by pickling.

Some basic tips for pickling fruits & vegetables:

  • Always follow a tested recipe. Even in vinegar, spoilage can happen. Canning pickled products by the boiling water methods further stops spoilage.

Jams & Jellies

No method of preserving food smells as wonderful as making jams and jellies.

Some basic tips for making jams and jellies:

  • The freshest, sweetest fruit makes the best jelly.
  • The acidity level has to be right for the fruits to gel. Lemon juice is added to low acid fruits.
  • Don’t alter sugar amounts in recipes. Sugar helps preserve and gel the fruits.