The canner's conundrum

How much should your garden grow?

Associated PressMay 16, 2014 

  • Vegetable yields

    The Kentucky Cooperative Extension Service's publication "Home Vegetable Gardening in Kentucky" offers this guidance for how much to plant for various crop yields.

    Avg. crop Planting Planting per per person per personVegetable 100 ft. (fresh) (storage)

    Asparagus30 lb. 10– 15 plants 10– 15 plants

    Beans, snap bush120 lb. 15– 16 ft. 15– 20 ft.

    Beans, snap pole150 lb. 5– 6 ft. 8– 10 ft.

    Beans, lima bush25 lb. shelled 10– 15 ft. 15– 20 ft.

    Beans, lima pole50 lb. shelled 5– 6 ft. 8– 10 ft.

    Beets150 lb. 5– 10 ft. 10– 20 ft.

    Broccoli100 lb. 3– 5 plants 5– 6 plants

    Brussels sprouts75 lb. 2– 5 plants 5– 8 plants

    Cabbage150 lb. 3– 4 plants 5– 10 plants

    Carrots100 lb. 5– 10 ft. 10– 15 ft.

    Cauliflower100 lb. 3– 5 plants 8– 12 plants

    Celeriac60 lb. 5 ft. 5 ft.

    Chard, Swiss75 lb. 3– 5 plants 8– 12 plants

    Collards and kale100 lb. 5– 10 ft. 5– 10 ft.

    Corn, sweet10 dozen 10– 15 ft. 30– 50 ft.

    Cucumbers120 lb. 1– 2 hills 3– 5 hills

    Eggplant100 lb. 2– 3 plants 2– 3 plants

    Garlic40 lb. – – – 1– 5 ft.

    Kohlrabi75 lb. 3– 5 ft. 5– 10 ft.

    Mustard100 lb. 5– 10 ft. 10– 15 ft.

    Okra100 lb. 4– 6 ft. 6– 10 ft.

    Onions (plants or sets)100 lb. 3– 5 ft. 30– 50 ft.

    Onions (seed)100 lb. 3– 5 ft. 30– 50 ft.

    Parsley30 lb. 1– 3 ft. 1– 3 ft.

    Parsnips100 lb. 10 ft. 10 ft.

    Peas, English20 lb. 15– 20 ft. 40– 60 ft.

    Peas, snow20 lb. 10– 15 ft. 30– 40 ft.

    Peas, Southern40 lb. 10– 15 ft. 20– 50 ft.

    Peppers60 lb. 3– 5 plants 3– 5 plants

    Potatoes, sweet100 lb. 5– 10 plants 10– 20 plants

    Pumpkins100 lb. 1– 2 hills 1– 2 hills

    Salsify100 lb. 5 ft. 5 ft.

    Soybeans20 lb. 50 ft. 50 ft.

    Spinach40– 50 lb. 5– 10 ft. 10– 15 ft.

    Squash, summer150 lb. 2– 3 hills 2– 3 hills

    Squash, winter100 lb. 1– 3 hills 1– 3 hills

    Tomatoes100 lb. 3– 5 plants 5– 10 plants

    Turnips50– 100 lb. 5– 10 ft. 5– 10 ft.

    SOURCE: Kentucky Cooperative Extension Service

A canner's garden is not your typical vegetable patch. With its full-scale production, distinctive varieties and four-season harvests, it's more for the future than the moment.

"Canner's gardens aren't really so different in what they grow. Where they're really different is in how much they grow," said Daniel Gasteiger, author of Yes You Can! And Freeze and Dry It, Too (Cool Springs Press, $19.95).

"Do some serious planning," said Gasteiger,. "How often do I serve corn? How often do I serve broccoli? Then consider how often you'll use it in the form you'll use to preserve it. I use broccoli much more often fresh than I do frozen."

The biggest challenge facing food preservationists tends to be determining how much to grow.

The Kentucky Cooperative Extension Service offers a chart on crop yields in its helpful 45-page publication, Home Vegetable Gardening in Kentucky. It's available at your county's extension office or free online at

For instance, a 100-foot row of snap bush beans will yield about 120 pounds; the service advises 15 to 20 feet of plantings per person for canning or freezing.

"The smaller your space, the more important it is to use succession gardening," Gasteiger said.

That means planting a second crop in the same space after the first one is harvested. Shop for short-season varieties if planting successive crops.

Also, choose cultivars carefully. Some are better than others for canning, freezing or dehydrating.

"If you're going to plant to preserve, you'll probably want the highest density (yielding) producers you can get," Gasteiger said. "Canning tomatoes are typically much firmer and less flavorful than slicing tomatoes but better (for canning) because they hold together when cooked."

How long do canned foods last?

"If the food was canned safely, it should remain safe indefinitely. No pathogens should grow on them," said Jeanne Brandt, a professor and master food preserver coordinator with Oregon State University. That program trains and certifies volunteers who help county extension service staff provide food safety and preservation information.

"Try not to preserve more than you can consume in a year or two though because the quality deteriorates," Brandt said. "It breaks down in the jar. It toughens. The color also changes dramatically."

Kimberly Culbertson of Hillsboro, Ore., is a master gardener who earned a master food preserver certificate.

"I got into preserving in part because it's a step up from gardening," she said. "I used to be in a rush to give away any surplus fresh vegetables before they'd spoil. Now, as canned, I can share them throughout the year."

She also recommends freezing, pickling and dehydrating as ways to preserve different foods and offer different flavors.

"I individually quick-freeze fresh fruit, then package it for the deep freeze so I can portion it out for cooking and snacking," she said. "Dried fruits concentrate flavors and sweetness, and add another dimension to cooking.

"I pickle peppers, and they can easily. Tomatoes bring back summer every time I open a jar."

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