DATE: 8/31/00 WRITER: Dr. Richard Hassell, (434) 766-3761; Clemson Extension vegetable specialist EDITOR: Giles Singleton, (864) 656-3876 Plant now for fall and winter vegetables CLEMSON -- During the fall most people don't think about planting a vegetable garden. Instead, they think of harvesting vegetables such as tomatoes, sweet corn, and squash. However, here in South Carolina, and especially along the coast, there are a number of vegetables that do very well during the fall and winter months. These vegetables traditionally have been cabbage, collards, mustard greens, and onions. But you may want to try green and red leaf lettuce, Boston lettuce, romaine lettuce, radish, parsley, and cilantro. These vegetables will handle a frost and temperatures in the low twenties with very little damage. Here's what it takes to grow these vegetables: Lettuce is an annual; it goes from seed to seed in one season. The speed at which this happens will depend on how warm it is. High temperatures, along with an intermediate day length, can cause bolting premature seed stalk formation before the head is ready for harvest. The degree of bolting depends a lot on variety selection. Some varieties bolt faster than others. Choosing the right one is the key with any of the lettuce types, such as: Solbolt (leaf), Ermosa (Boston), Green Tower (romaine). If you can't find what you need, check with your county's Clemson Extension agent as to which varieties do best in your region of South Carolina. Or call Clemson's Home and Garden Information Center at 1-888-656-9988. Now is the time to start seeding lettuce. Since lettuce seeds will not germinate if the temperature around them is above 85 degrees F, you can start lettuce plants indoors, where it is cool. When temperatures exceed 85 degrees F, the seed goes dormant, which means it will not germinate even though it is still alive. Once it germinates, it takes between three to four weeks for a lettuce plant to be ready for transplanting into the garden. Ten inches, both between plants and within rows, is the standard spacing for all these types of lettuce. Once it is in your garden, lettuce takes between sixty to eighty days to be ready for harvest, depending on type and temperatures. The order of maturity is as follows: Boston, followed by leafy, then romaine. As far as lettuce is concerned, disease and insect pressure is light. Lettuce plants can't stand "wet feet" standing water. To let the plants drain properly, plant them on beds rather than flat ground. Also, lettuce plants only have a fibrous root system, which means that most of their roots are on or just below the surface of the soil. This is important to remember when cultivating your garden so you do not damage or hinder the growth of the plant. Radishes are fairly easy to grow. They mature anywhere from twenty eight to forty two days form seeding, depending on soil and air temperatures during their growing time. For radishes, the warmer it is, the faster they mature. Place the seed just below the soil surface and put one seed every inch. Radishes are some of the fastest germinating seeds and should be visible in just a few days. The flavor of the radish bulb is also dependent on temperature. As a general rule, the cooler the temperature, the milder the radish. This means radishes grown in the fall and winter months should be on the mild side. Parsley and cilantro are herbs that garnish the dinner plate as well as add flavor to most foods. The best time to plant these herbs is when the soil cools down, and when the maximum air temperature is in the 70 to 80 degree F range. For a home garden, seed parsley and cilantro very thickly. The trick is in getting the seed to germinate. These seeds contain a naturally occurring seed inhibitor that prevents them form germinating before there is enough moisture to germinate and grow the plant. This inhibitor is water soluble, so applying excess water is the key. Keep the soil on the wet side until you see the plants coming up. When the plants are up and growing, then keep the soil on the dry side to help prevent disease from becoming a problem. This also forces the roots to go deep. When the plants get big enough to harvest, cut them at least two inches from the soil surface. This will allow the plant to regrow and to provide you with a continual supply of herbs to last all winter. When the temperature gets too warm, the seed stalks form before you can get enough to cut. This will be your key that it is time to till it under. A home garden in South Carolina can be kept producing vegetables all year long-- Richard Hassell, Clemson Extension vegetable specialist, Costal Research and Education Center. ***************************************** If you have questions or comments on gardening, write to PSA Media Relations, A-101 Poole Agricultural Center, Clemson University, Clemson, S.C. 29634-0129, or see www.clemson.edu/psamedia. END