How to Produce Watermelon in the Winter

Have you ever ate a fresh watermelon over the winter? Most people have not. Watermelons are usually reserved for summer. Solar is currently attempting to grow a watermelon in our greenhouse, over the winter.  We failed at our first two attempts but are hoping to succeed on our third try. The watermelons began blooming at the end of September, at which time the plants were hand pollinated. There are now two small watermelons beginning to grow; they are about the size of a golf ball.  We believe the difference this year was the addition of more fertilizer and extended daylight hours thanks to the additional exposure to grow lights.