Tips on Planting Watermelon

Watermelons probably originated almost 5,000 years ago in the Kalahari Desert of Africa where botanists have found its wild ancestors still growing. Watermelons migrated north through Egypt, and during the Roman era they were cultivated and prized. Hieroglyphics on the walls of Egyptian buildings tell stories of their harvest. Watermelons were buried in the tombs of kings to nourish them in the afterlife. Melons spread across the European continent and particularly flourished in the warmer Mediterranean areas.

Watermelons were documented in 1629 in Massachusetts. During the Civil War, the Confederate Army boiled watermelon to make molasses for cooking. It is in the Southern states such as the Carolinas and Georgia where watermelons flourish as commercial crops. Numerous varieties were developed, and variations of flesh color surfaced.

Tips:

Planting

• If you live in warmer climes, you can direct sow seeds outdoors, but wait until the soil temperature warms to at least 70 degrees to avoid poor germination.
• Watermelon vines are very tender and should not be transplanted until all danger of frost has passed. (To be safe, wait at least two weeks past your last frost date.)
• If you are in a cooler zone, start seeds indoors about a month before transplanting. 
• Amend soil with aged manure or compost before planting. Watermelons are heavy feeders.
• Watermelons prefer a soil pH between 6 and 6.8.
• Growing the vines in raised rows, known as hills, ensures good drainage and will hold the sun’s heat longer. Space the plants about 2 feet apart in a 5-foot-wide hill. 
• If you're growing in rows, space 6 feet apart by 6 feet apart. 
• Watermelons like loamy, well-drained soil. Handle them gently when you transplant. 
• After you transplant, cover the plants with row covers to keep pests at bay. You'll remove the row covers when you see both male and female flowers on the vine.

Care

• Mulching with black plastic will serve multiple purposes: it will warm the soil, hinder weed growth and keep developing fruits clean.
• While melon plants are growing, blooming, and setting fruit, they need 1 to 2 inches of water per week. Water at the vine's base in the morning, and try to avoid wetting the leaves and avoid overhead watering. Reduce watering once fruit are growing. Dry weather produces the sweetest melon.
• Pruning isn't necessary, but vine productivity may be improved if you do not allow lateral (side) vines to grow and stick to the main vine. When the plant is young, just cut off the end buds as they form (before the side shoots become vines). You can also pinch off some blossoms to focus the energy on fewer melons (though it's a challenge to kill off a potential fruit!).
• Vines produce male and female flowers separately on the same plant. They often begin producing male flowers several weeks before the females appear. Do not be concerned if the male flowers fall off. The female flowers (which have a swollen bulb at the base) will stay on the vine and bear fruit.
• Blossoms require pollination to set fruit, so be kind to the bees! 
• As fruit is ripening, prevent rotting by gently lifting it and putting some cardboard or straw between the fruit and the soil.

Pests

• Aphids
• Cucumber Beetles
• Squash Vine Borer Moths
• Fusarium Wilt

Harvest/Storage

Watermelons don’t sweeten after they are picked, so harvest time is important. They generally ripen over two weeks so keep you eye on them.

• Thump it. If the watermelon sounds hollow, it's ripe.
• Look at the color on the top. The watermelon is ripe when there is little contrast between the stripes.
• Look at the color on the bottom. A green watermelon will have a white bottom; a ripe melon will have a cream- or yellow-colored bottom.
• Press on it. If the watermelon sounds like it gives a little, it's ripe. (Rhodes doesn't like this method because it can ruin the quality of the fruit.)
• Check the tendril. If it's green, wait. If it’s half-dead, the watermelon is nearly ripe or ripe. If the tendril is fully dead, it's ripe or overripe; it’s not going to get any riper, so you might as well pick!
• Stems should be cut with a sharp knife close to the fruit.
• Watermelons can be stored uncut for about 10 days. If cut, they can last in the refrigerator for about 4 days. Wrap tightly in plastic.More harvesting tips include Knowing how to determine when a watermelon is perfectly ripe is not easy. One way favored by many gardeners is to watch the tendril closest to the melon stem. A tendril is a modified leaf or stem in the shape of slender, spirally coil. When it turns brown and dries up, the melon is ripe. The trouble with this method is that with some watermelon varieties, the tendril dries and drops off more than a week before the melon is fully ripe. Slapping and tapping or thumping are other common methods used to determine ripeness, but they are not always accurate.However the surest sign of ripeness in most watermelon varieties is the color of the bottom spot where the melon sits on the ground. As the watermelon matures, the spot turns from almost white to a rich yellow. Also, all watermelons lose the powdery or slick appearance on the top and take on a dull look when fully ripe. After picking a watermelon, chill it before serving for best flavor. Some folks sprinkle a little salt on their watermelon, but it's probably thought of as a cure for poor tasting store-bought melons and certainly not necessary for home-grown. If the seeds present a problem, grow seedless watermelon varieties like 'Seedless Sugar Baby Hybrid' or 'Orange Sunshine Hybrid'. A cut melon, if covered with plastic wrap or aluminum foil, will keep several days in the refrigerator.Tips