Extend Your Michigan Harvest Year-Round
Preserving the Michigan Summer Harvest
Michigan's growing season is compressed but intense — July and August produce more food than most families can eat fresh. Preserving that harvest extends it through winter, reducing grocery costs by $400–800 for a well-managed home garden. This guide covers the three most important preservation methods for Michigan produce.
The payoff: A half-bushel of paste tomatoes from Eastern Market ($15–20) processed into canned tomatoes produces 14–18 quarts — enough for a year of pasta sauces, soups, and chili. The same product at retail costs $56–72 for comparable quality.
A well-stocked Michigan pantry from summer preservation reduces winter grocery bills by hundreds of dollars.
Preservation Methods
Which Method for Which Michigan Crop
| Crop | Best Method | Equipment Needed | Shelf Life | Notes |
|---|---|---|---|---|
| Tomatoes | Water bath canning (crushed, sauce, salsa) | Water bath canner, mason jars, lids | 12–18 months | Add lemon juice or citric acid — critical for food safety with low-acid tomato varieties |
| Green beans | Pressure canning | Pressure canner (required), jars | 12–18 months | Low-acid vegetable — water bath canning is NOT safe for green beans. Pressure canner is essential. |
| Cucumbers | Water bath canning (pickles) | Water bath canner, jars, pickling salt | 12 months | Use pickling cucumbers for best texture. Adding grape leaf to each jar helps keep pickles crisp in Michigan's soft water. |
| Corn | Blanch and freeze | Large pot, freezer bags | 8–12 months frozen | Blanch 4 minutes, cool immediately in ice water, cut from cob, freeze in quart bags. Retains sweetness far better than canning. |
| Zucchini / squash | Freeze (shredded) or dehydrate | Freezer bags or dehydrator | 8–12 months frozen | Shred, squeeze dry, portion into 2-cup amounts for baking use all winter. |
| Herbs | Freeze (basil) or air dry (woody herbs) | Ice cube trays, twine | 6–12 months | Basil in olive oil frozen in cubes. Thyme, oregano, rosemary bunched and hung to dry. |
| Garlic | Cure and store dry | Dry, ventilated space | 6–9 months | Cure by hanging in bunches in a warm, well-ventilated space for 3–4 weeks after harvest. Store at room temperature — NOT refrigerator. |
| Berries | Freeze or jam | Freezer bags or water bath canner | 8–12 months frozen; 12 months jam | Freeze individually on sheet trays before bagging to prevent clumping. Michigan blueberries and raspberries preserve beautifully. |
Canning Safety
Michigan Canning — Safety First
Understand acid levels
High-acid foods (tomatoes with added lemon juice, pickles, jams) are safe in a water bath canner. Low-acid foods (vegetables, meats, soups) MUST use a pressure canner. This is non-negotiable food safety — not a guideline.
Use tested recipes only
The USDA and Ball Blue Book provide tested recipes with exact processing times. Do not reduce acid, alter proportions, or change jar sizes without re-testing. Michigan State University Extension offers excellent free canning resources at canr.msu.edu.
Check seals and storage
After processing, jars should seal with a satisfying pop as they cool. Press the center of each lid — it should not flex. Store sealed jars in a cool, dark location (Michigan basements are ideal). Refrigerate any unsealed jars and use within a week.
More Michigan Gardening Resources
Seed Starting Guide
Planting Zones by City
Soil Testing 101
Last Frost Dates by City
Raised Beds for Clay Soil
Cool-Season Vegetables
When to Plant Tomatoes
Vegetable Planting Calendar
Eastern Market Detroit
Companion Planting Guide
Organic Pest Control
Best Herbs to Grow
Watering Your Garden
Succession Planting
Backyard Composting
Fall Vegetable Garden
Native Plants for Pollinators
Winterizing Your Garden
Seed Saving Guide