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Minnesota Midget Cantaloupe · Zones 3–9
Growing Details
Zone-by-Zone Planting Calendar
| Zone | Indoor Start | Transplant | Direct Sow | Harvest |
|---|---|---|---|---|
| Zone 3 | April – May | May – June | June – June | August – September |
| Zone 4 | April – May | May – June | May – June | August – September |
| Zone 5 | April – May | May – June | May – July | July – September |
| Zone 6 | March – April | April – June | May – July | July – October |
| Zone 7 | March – April | April – June | April – July | June – October |
| Zone 8 | February – March | March – June | April – August | June – October |
| Zone 9 | January – February | February – June | March – August | May – November |
Complete Growing Guide
Start Minnesota Midget cantaloupe indoors 2-4 weeks before your last frost date if you're in zones 3-5, as this gives you the best chance of a full harvest in short-season areas. Sow seeds in 4-inch pots using seed-starting mix, keeping soil temperature between 70-85°F for optimal germination. Plant two seeds per pot, ½ inch deep, and thin to the strongest seedling once they develop their first true leaves.
Prepare your garden bed by working in 2-3 inches of well-aged compost or rotted manure into sandy loam soil. Minnesota Midget thrives in slightly alkaline soil with a pH between 6.0-7.0. Create raised beds or mounded rows if your soil has drainage issues, as waterlogged roots will kill your plants faster than anything else.
Transplant seedlings after soil consistently reaches 65°F and nighttime temperatures stay above 50°F. Space plants 2-3 feet apart instead of the typical 4-6 feet for standard cantaloupes, since these compact vines only spread 3-4 feet. Immediately after transplanting, cover with row covers or Wall O' Water to protect from late cold snaps that can stunt growth permanently.
Fertize with a balanced 10-10-10 fertilizer at planting, then switch to a low-nitrogen, high-phosphorus fertilizer once flowers appear to encourage fruit development over excessive vine growth. Side-dress with compost every 3-4 weeks throughout the growing season.
Avoid overwatering, which causes root rot and bland-tasting fruit. Water deeply once weekly, providing about 1 inch total, and always water at soil level to prevent foliar diseases. Mulch around plants with straw or grass clippings to retain moisture and suppress weeds.
The biggest mistake with Minnesota Midget is harvesting too early. Unlike large cantaloupes, these small melons can look ripe when they're still developing their full sugar content. Wait for the full slip stage and proper color development for the best flavor.
Harvesting
Minnesota Midget cantaloupes are ready to harvest when the background color changes from green to creamy tan or golden buff, typically 70-75 days from planting. The distinctive cantaloupe netting should be well-developed and slightly raised. Most importantly, the fruit should easily separate from the vine with gentle pressure - this is called 'full slip.' If you need to tug or cut the stem, the melon isn't ripe.
Press gently on the blossom end (opposite the stem); ripe melons yield slightly to pressure and emit a sweet, musky fragrance. The stem end may also develop small cracks around the attachment point. Unlike larger varieties, Minnesota Midget melons can go from underripe to overripe quickly, so check daily once the first melon shows signs of ripening.
Harvest in the morning when temperatures are cool and fruits are firm. Handle gently as the small size makes them more susceptible to bruising. Each plant typically produces 6-8 melons that ripen over a 2-3 week period.
Storage & Preservation
Store freshly harvested Minnesota Midget cantaloupes at room temperature for 2-3 days to allow full flavor development if they were picked at early slip stage. Once fully ripe, refrigerate whole melons for up to one week in the crisper drawer. Cut melons should be wrapped tightly and used within 3-4 days.
For preservation, remove seeds and cut flesh into chunks for freezing - frozen cantaloupe works well in smoothies and sorbet but loses its firm texture. Dehydrate thin slices at 135°F for 8-12 hours to create concentrated cantaloupe chips. You can also puree the flesh and freeze in ice cube trays for easy smoothie additions. Minnesota Midget's intense flavor concentration makes it excellent for making cantaloupe jam or preserves, though you'll need multiple melons due to their small size.
History & Origin
Minnesota Midget cantaloupe was developed by the University of Minnesota's Agricultural Experiment Station in the 1940s specifically to address the challenges northern gardeners faced growing melons in short-season climates. The university's plant breeders, led by researchers focused on cold-climate agriculture, created this variety by selecting for early maturity, compact growth habit, and tolerance to cool weather stress.
This variety emerged during World War II when victory gardens were essential, and there was significant interest in developing crops that could extend the growing season in northern states. The 'Midget' designation reflects both its small fruit size and compact vine structure, making it ideal for small urban gardens that were common during the war years.
Minnesota Midget became particularly popular among homesteaders and gardeners in zones 3-5, where the 70-day maturity allowed successful cantaloupe cultivation in areas previously thought unsuitable for melons. Today, it remains a cherished heirloom variety, especially valued by gardeners dealing with short seasons, small spaces, or unpredictable weather patterns.
Advantages
- +Extremely short 70-day maturity makes it viable in zones 3-4 where other melons fail
- +Compact 3-4 foot vines perfect for small gardens and container growing
- +Produces 6-8 melons per plant, much higher yield than standard varieties
- +Individual portion-sized 1-2 pound fruits reduce waste
- +Exceptional cold tolerance allows earlier planting than other cantaloupes
- +Concentrated sweet flavor rivals much larger heirloom varieties
- +Good storage life for such a small melon
Considerations
- -Small fruit size means you need multiple plants for family-sized harvests
- -Narrow harvest window - fruits can overripen quickly in hot weather
- -More susceptible to bruising during handling due to delicate skin
- -Limited disease resistance compared to modern hybrid varieties
- -Seeds can be difficult to find compared to common varieties
Companion Plants
Plant Together
Basil
Repels aphids, whiteflies, and thrips while potentially improving melon flavor
Marigolds
Deters cucumber beetles, aphids, and nematodes with natural compounds
Nasturtiums
Acts as trap crop for cucumber beetles and aphids, draws pests away from melons
Radishes
Repels cucumber beetles and squash bugs while loosening soil with taproots
Beans
Fixes nitrogen in soil and provides natural ground cover without competing
Corn
Provides natural windbreak and vertical structure without root competition
Sunflowers
Attracts beneficial insects and provides shade during hot afternoons
Oregano
Repels cucumber beetles and improves overall garden biodiversity
Keep Apart
Cucumbers
Competes for same nutrients and attracts similar pests like cucumber beetles
Potatoes
May stunt melon growth and both crops are susceptible to similar fungal diseases
Aromatic herbs (strong)
Strong herbs like sage can inhibit melon germination and growth
Pests & Disease Resistance
Resistance
Good resistance to cool weather stress, moderate disease resistance
Common Pests
Cucumber beetles, aphids, squash bugs
Diseases
Powdery mildew, downy mildew, bacterial wilt