They are able to tolerate light freezes, that is just a few hours of frost. Halr-hardy vegetables grow when the minimum temperature is between 40º and 50º (5-10✬). Hardy vegetables include asparagus, broccoli, Brussels sprouts, cabbage, chives, collards, corn salad, garlic, horseradish, kale, kohlrabi, leeks, mustard, onions, parsley, peas, radishes, rhubarb, rutabaga, spinach, and turnips. Hardy vegetables will grow when the daytime temperature is as low as 40º (5✬) degrees. They can be planted 2 to 4 weeks before the date of the average last frost in spring their seeds will germinate in cold soil and their seedlings can endure short freezes. Hardy vegetablesĪre the most cold-tolerant. Early-spring planting times Hardy and half-hardy vegetablesĬool-season vegetables are often further categorized as hardy and half-hardy. Warm-season vegetables can be grown out of their season if they are protected from temperatures below 50✯ (10✬). They will grow best when the temperature is 75✯ (24✬) or warmer. Warm-season vegetables should be planted so that they mature when the weather is warm and the soil and air temperatures are above 50✯ (10✬). Cool-season crops do not do well in the warmest summer temperatures. Mature cool-season crops can survive in temperatures near freezing without protection. Cool-season crops can be planted when the soil and air temperatures are cool, as low as 40✯ (5✬). Cool-season crops come to harvest in cool weather, either in spring or fall, or winter. Cool-season vegetablesĬool-season vegetables should be planted so that they mature when the weather is cool, either in spring or early summer or in autumn or winter. Vegetables are generally divided into two categories: cool-season vegetables and warm-season vegetables. Cooperative Extension and weather service.Good Products for Raised Bed Growing at Amazon: And, if you live in a tropical or subtropical region where the weather is seldom if ever cool, warm-season crops are your best year-round choice. Of course, if the temperatures in your region are cool year-round, cool-season crops will be well-suited most of the year. Warm-season vegetables must be planted and begin to grow after the last frost or freeze of winter, and they must mature soon enough that they can be harvested before the first frost of the next cool season. That means they are usually planted at the end of the warm season or the start of the cool season. Planting cucumber seedlings in early summerĬool-season vegetables must mature while the weather is cool otherwise they will go to seed. Warm-season vegetables grow best during the late spring, summer, and early autumn when the temperatures are warm. Cool-season vegetables grow best in early spring or in late summer and autumn when temperatures are cooler. The planting date for each vegetable depends upon the temperature and the weather that the vegetable can best tolerate. Most vegetables belong to one of two seasonal groups: cool-season crops and warm-season crops. Planting vegetables in the right season will greatly enhance your harvest.
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