Watermelon Kush Strain: Watermelon, also known as Watermelon Kush, is a mysterious strain of unknown parentage. This bud’s unspecified genetic background brings a rich mix of terpenes that have resulted in a unique watermelon aroma. Beyond its refreshing summery flavor, this strain is valued for its long-lasting sedative power. Watermelon’s THC content has been measured at between 11% and 22%.