Harvesting and storing home garden vegetables

One of the joys of summer is homegrown sweet corn, picked right outside your back door and plopped straight into a pot of boiling water or onto the grill. The advantage of having a home garden is that you can pick and savor your vegetables when they're at their optimal flavor. But how can you tell when to harvest your vegetables? How should you store zucchini if they all reach optimal size at the same time? What are the best conditions to store your homegrown vegetables? This fact sheet provides some information that will help you make decisions on harvesting and storing your vegetables.

When harvesting vegetables, be careful not to break, nick, or bruise them. The less vegetables are handled, the longer they will last in storage. Harvest only vegetables of high quality. Rotting produce cannot be stored for very long, and could spread disease to other stored vegetables.

Different vegetables need different storage conditions. Temperature and humidity are the main storage factors to consider; there are three combinations for long-term storage:

cool and dry (50-60°F and 60% relative humidity),
cold and dry (32-40°F and 65% relative humidity), and
cold and moist (32-40°F and 95% relative humidity).

For cold conditions, 32°F is the optimal temperature, but it isn't easy to attain in most homes. Expect shortened shelf-lives for your vegetables as storage conditions deviate from the optimal, as much as 25% for every 10°F increase in temperature. Some vegetables, such as cucumbers, peppers and tomatoes, require cool (55°F) and moist storage. These conditions are difficult to maintain in a typical home, so expect to keep vegetables requiring cool and moist storage conditions for only a short period of time.

Where can the different storage conditions be found in a typical home? Basements are generally cool and dry. If storing vegetables in basements, provide your vegetables with some ventilation. Harvested vegetables are not dead, but still "breathe" and require oxygen to maintain their high quality. Also, be sure they are protected from rodents.

Home refrigerators are generally cold and dry (40°F and 50-60% relative humidity). This is fine for long-term storage of garlic and onions, but not much else. Putting vegetables in perforated plastic bags in the refrigerator will provide cold and moist conditions, but only for a moderate amount of time. Unperforated plastic bags often create too humid conditions that lead to condensation and growth of mold or bacteria.

Root cellars provide cold and moist conditions. As with basements, provide ventilation and protection from rodents when storing vegetables in cellars. Materials such as straw, hay, or wood shavings can be used as an insulation. If using such insulation, make sure that it is clean and not contaminated with pesticides.

10 Vegetables & Herbs You Can Eat Once and Regrow Forever

There are some ingredients I cook with so often I can never buy too many of them, and most of them are produce. Onions, garlic and fresh herbs are staples in a lot of dishes, and they may be inexpensive, but when you use them on a daily basis it can add up.

Some foods are easy to regrow at home from leftover scraps, and some of them can even be grown right on your kitchen counter. Here are 10 vegetables and herbs you can buy once and regrow forever.

1. Garlic
When garlic starts to sprout, the little green shoots are too bitter to cook with. Rather than throwing away sprouted cloves, you can put them in a glass with a little water and grow garlic sprouts. The sprouts have a much milder flavor than garlic cloves and are great in salads, pasta and as a garnish.

2. Carrot Greens
The ends of carrots you usually chop off and throw away will grow carrot greens if you put them in a dish with a little water. Set the dish in a well-lit windowsill and you’ll have carrot tops to use as a garnish or in salads.


3. Basil
Put a few basil clippings with 4-inch stems in a glass of water and place it in a spot with direct sunlight. When the roots are about 2 inches long, you can plant them in pots to grow a full basil plant.

4. Scallions
In as little as 5 days you can completely regrow a full scallion (or green onion) from the scraps. Leave about an inch attached to the roots and place them in a small glass with a little water. In a few days, you’ll have all new scallions.


5. Romaine Lettuce
If you have a stem from a head of romaine lettuce that’s still intact, place the stump in a bowl with about ½ inch of water and put it on a windowsill. You’ll start to see new leaves in about 2 weeks, and they’ll be full grown in 3 to 4.

6. Bok Choy
Just like romaine lettuce, bok choy can be regrown by placing the root end in water in a well-lit area. In a week or two, you can transplant it to a pot with soil and grow a full new head.

7. Onions
Plant the discarded root end from an onion in a pot or directly in the soil outside to regrow. You can harvest it early and get fresh green onions or wait until the bulb is fully developed.

8. Ginger
Like onions, ginger root can be planted in soil to regrow, but the process is a lot more lengthy. It can take a few months for it to sprout, and you should be able to harvest a fully grown bulb in 8 to 10 months.

9. Mushrooms
Plant mushroom stalks in soil with some compost or used coffee grounds and keep them in a moist environment, preferably where it will be cool at night. They can be tricky to grow, and within a few days the stems will either start to sprout new heads or rot.

10. Cilantro
Like basil, cilantro can grow roots if the stems are placed in a glass of water. Once the roots are long enough, just plant them in a pot. In a few weeks new sprigs will be starting, and in a few months you’ll have a full plant.