Watermelons require 80-90 days from seed sowing to grow a full-size watermelon. Some smaller-sized watermelons (like Sugar Baby) can reach maturity in closer to 70 days. Read more
How Many Watermelons per Plant? Healthy watermelon vines produce 2-4 fruits per plant. The vines produce both male and female flowers. Both are needed to set fruit and there are fewer female flowers compared to male, about one female for every seven males.
Watermelons are surprisingly easy to grow as long as the plants have plenty of room to spread, good drainage, lots of sunlight, and a sufficiently long growing season. Gardeners in northern climates should choose early ripening varieties.
It's typically a range like 80 to 120 days. If you're growing watermelon from seedlings your bought, just note when flowers open. It typically takes about five calendar weeks for a watermelon to go from flower to ripe fruit.
Typically, watermelon plants need 1-2 inches of water per week so that the soil stays moist but not wet. If you're not getting enough rain each week, make sure you give your plants an extra drink.
As annual plants, watermelons (Citrullus lanatus) must be replanted every season and will not survive the winter either as seedlings or fully grown plants. Watermelons require warm weather to grow quickly and produce their sweet, juicy fruit.
As the vines, which should be about two feet apart, begin to run, send them up a sturdy trellis. You will need to tie the runners to the trellis, since watermelons are not natural climbers. ... Watermelons don't climb by habit, but once shown the way they can rise with the best. Watermelons rest easy in hammocks.
Light. Watermelons require full sunlight in order to thrive. The plants can tolerate some partial shade, particularly in hotter climates, but plenty of sun is necessary to develop the sugars in the melons.
Answer: Harvest watermelons when the underside or belly of the fruit turns from a greenish white to buttery yellow or cream. This color change is especially pronounced on the dark green skinned varieties. In addition, the fruit tends to lose its slick appearance on top and becomes dull when ripe.
Melons need room to roam. Space plants 36 to 42 inches apart. Or, to save space, plant melons 12 inches apart at the base of a trellis.
Start seeds indoors.
Watermelon seeds can be started indoors, about six weeks prior to growing season. Plant seeds in peat pots and place near a sunny windowsill. Keep soil moist, but refrain from overwatering at this stage—peat pots are very absorbent and will keep the soil humid for the newly germinating seeds.
Watermelons need A LOT of space—up to 20 square feet per plant. Their vines need room to sprawl, so plant them in a place where they won't crowd out other crops. Growing the vines in raised rows, known as hills, ensures good drainage and will hold the sun's heat longer.
As mentioned, watermelons are warm season plants, and they grow best in hot weather. Once seeds sprout, plants prefer temperatures ranging from 70-90°F during the day and 60-70°F at night. So if temperatures in your area are hotter than that, try using straw mulch under your plants to keep the soil cool.
Other preventative measures you can take include keeping the watermelon off the ground as they grow and develop. Use a cage, plastic mulch, stakes, straw mulch or other materials to protect the fruit from the ground. You can even use a wooden board for the fruit to rest on as it matures.
Place your container wherever your watermelons will grow best. A spot that gets at least eight hours of sun per day is ideal, and if you can place it on brick or concrete, even better, because the soil will soak up all of that heat and the plants will love it.
Size. The foremost concern in planting both cantaloupe and watermelons in the same garden bed is space. The vines of both melons spread far and will grow wherever they can to access sunlight. Plants too close together cause unnecessary competition for light, soil moisture and nutrients.
'Sugar Baby' Watermelon
Avoid planting them near other crops that will shade them. Include flowers like dill, chamomile, cosmos and pineapple sage to attract predatory insects that eat melon pests, including beetles, caterpillars and aphids.
Like the melon, the watermelon, Citrullus lanatus, of the Cucurbitaceae family, is native to Central Africa, in the western Kalahari region of Namibia and Botswana, where many forms are still found in the wild. And also like the melon, the watermelon does not grow on a tree, but on the ground!
Watermelons require a large vegetative-free space located in full sun and with well-drained soil that's reached a minimum of 65 degrees Fahrenheit for proper germination and growth, according to The Old Farmer's Almanac. Because they are heavy feeders, amend the site with compost or well-rotted manure before planting.
They require plentiful regular, even watering for quick growing. Give watermelons 1 to 2 inches (2.5. -5cm) of water every week (1 inch equals 16 gallons/60.5 liters.) Keep the soil moist until the fruit reaches full size then stop watering while the fruit ripens.
One of the least expensive and most effective disease control measures is crop rotation. Do not plant after watermelon or similar crops, such as cantaloupe, cucumber, squash, and pumpkins, for at least three years. Overhead watering encourages many plant diseases.
Watermelon in nature is pollinated by bees, wasps and other nectar seeking insects who hop from flower to flower and distribute pollen. Watermelon farms rely on bees to pollinate the crop and farmers will hire and raise bees just to perform this service.