Look for three main signs: the field spot (the underside touching the ground) turns from white to creamy yellow, the green tendril closest to the fruit stem dries up and turns brown, and tapping the melon produces a deep, hollow sound rather than a dull thud.

While pruning isn't strictly necessary, removing excess lateral runners or limiting each vine to 2–3 developing melons redirects the plant's energy into producing larger, sweeter fruit.

Watermelon vines produce male flowers first before developing female flowers (which have a small fruit swelling at the base). Poor fruit set is often caused by a lack of pollinators like bees, low temperatures, or high nitrogen fertilizer encouraging leaf growth over flowering. Gentle hand pollination using a small paintbrush can help increase yield.

Yes! While watermelons love to spread out, you can save space in smaller beds by growing them vertically using a sturdy trellis. Support the heavy, developing melons with soft cloth slings attached to the trellis frame so they don't pull off the vine prematurely.