Keep the plants under plastic bags till the flowers appear on the vine.
The most reliable sign of ripening occurs when the small tendril opposite the fruits pendule (stem attachement) changes from green to brown and becomes dry.
You can sow watermelon seeds in mounts or rows. Plant three to four seeds in each mount you make.
Sow 0.39 inches (1.0 cm) deep with a guideline distance of 8.12 feet (2.50 metres). Soil temperature should be kept higher than 16°C / 61°F to ensure good germination.Collect seeds when fruits are fully ripe. Clean the seeds, and dry them. 1
Seed viability is five years.
These estimates for how long Watermelon takes to sprout, grow and harvest are from real observations from real gardeners, right around the world.
Average 9 days | Min 1 days | Max 26 days (334)
Average 24 days | Min 1 days | Max 69 days (104)
Average 81 days | Min 18 days | Max 302 days (13)
In times of drought, watermelons have often been used as a source of uncontaminated water.
Watermelon has compounds that act on the blood vessels in a similar manor as viagra, without the side effects.2
Watermellon, Sugar baby watermelon 4, Pastèque à confitures, Melon à confitures, Daisy or yellow shipper watermelon
Citrullus lanatus (Thunb.) Matsum & Nakai, Citrullus vulgaris
Misspellings: Citrullus vulgaris, Citrullus ianatus
1 “The New Seed-starters Handbook; Published 1988”