When to Pick Vegetables: Harvest Readiness Guide

The date on a seed packet tells you when a crop may begin to be ready. Weather and variety shift that window. A late sowing can shift it too. Use the crop itself to make the final call.

A snap bean can turn fibrous while the calendar still says it is on time. A tomato can color later after cool weather. Harvest readiness is a physical stage, not a date circled on a calendar.

Snap beans are best while the pods are smooth and the seed bumps are small. Pick cucumbers at the size named for that variety, before the interior turns seedy. Summer squash is also better while its skin is tender.

Okra needs a closer watch. Most cooking varieties are best at two to three inches long, although round pods can stay tender at a larger size. Bend the tip before you pick it. A tip that snaps cleanly signals a tender pod. Okra grows quickly in hot weather, so check every few days.

A pod or fruit changes as its seeds mature. The flesh gets tougher and its flavor changes. Harvesting often is the easiest way to catch these vegetables at the stage you want to eat. It does not mean one oversized cucumber has made the whole plant stop flowering.

Pick tomatoes for the way you plan to use them. A tomato at the breaker stage, with its first pale blush of color, can finish ripening indoors. For a fresh meal, wait until the color has spread and the fruit has a little give.

Peppers can be clipped at full size while green, or left on the plant for their mature color. Use sharp shears to clip the fruit stem on most plants rather than tugging at a firm pepper. Eggplant is at its best while the skin is glossy and firm. Press it gently. The skin should spring back. Once the gloss has faded and the fruit feels spongy, the seeds and flesh are usually past their best.

Reticulated muskmelons, often sold as cantaloupes, commonly form an abscission zone at full slip. At that stage the fruit comes away from the vine with a gentle lift. If you have to pull or cut it, it is not at full slip yet.

Honeydew and watermelon do not use full slip. Most honeydews will not become sweeter after harvest, so leave them on the vine until the rind shifts toward the color expected for that variety and the fruit has a sweet smell.

On a watermelon, look first for a creamy yellow ground spot and a dry brown tendril nearest the fruit. A duller rind can support those signs, although the exact look varies by variety. Do not make the call from a thump alone. Cut a ripe fruit from the vine rather than pulling it.

Garlic is usually ready when about 40 to 60 percent of its leaves have browned and four or five upper leaves remain green. Those green leaves dry into the bulb wrappers. Loosen a test bulb with a garden fork. The cloves should fill the skins without forcing the bulb open.

Winter squash is ready when its rind resists a firm thumbnail press. Cut the stem with clean pruners instead of twisting the fruit away from the vine. Lift the squash by the body, because a broken stem shortens its storage life.

Storage is a separate step. Cure sound winter squash for seven to ten warm, dry days before moving it to cool storage. Field curing works when rainless weather stays near 80 to 90°F. Otherwise, cure it under cover with good airflow.

Leafy crops hold best when picked in the cool part of the day and moved out of the sun promptly. Crops that tolerate washing can be cooled in clean cold water before draining and refrigerating.

Sweet corn is ready at the milk stage. Brown, dry silks tell you the ear is close. If you need to confirm, peel back only the tip and press one kernel with a thumbnail. Milky juice means pick it. A watery or pasty kernel has missed the prime stage.

Sweet corn and peas lose eating quality quickly after picking. Chill them or cook them the same day. Remove carrot and beet tops before storage because the greens keep drawing moisture from the roots. Onions meant for storage need a soft, fallen neck and dry outer scales before their curing period begins.