Also, Watermelons don't continue to ripen after being picked so harvest timing is important. Here are some tricks to see if they are ready to be picked:
- Thump it. If the watermelon sounds hollow, it’s ripe.
- Look at the color on the top. The watermelon is ripe when there is little contrast between the stripes.
- Press on it. If the watermelon sounds like it gives a little, it’s ripe.
- Check the tendril. If it’s green, wait. If it’s half-dead, the watermelon is nearly ripe or ripe. If the tendril is fully dead, it’s ripe or overripe.