Go out to the Sugar Baby watermelon between 6 and 9 a.m. on the day you want to pollinate the plant. The flowers on the plant only remain open for one day, so you may have to check the plant each morning before you come on the day when many female flowers are open.
Snip off a male flower with garden shears, leaving 2 inches of stem at the base of the flower. Unlike female flowers, male flowers do not have a swelling at their base. This swelling is an immature watermelon. Pull the petals off the male flower carefully so you do not disturb the pollen.
Take the male flower to an open female flower. Brush the stamen, which is covered in pollen, along the middle of the female flower to transfer the pollen. Brush the middle of the flower 10 times.
Repeat the process by cutting off another male flower for every female flower on the vine.