The watermelon will also lose its shine and become dull-looking. [title] Do not collect seeds from watermelons growing on vines that have wilting, spotted or dying leaves or vines.
[header] How to save watermelon seeds for planting [title] Collect watermelon seeds from ripe, healthy watermelons. [step] They generally ripen 35 to 45 days after the plant blooms. [substeps] When the watermelon is ripe, the curly tendril on the vine will dry up and turn brown and the white spot on the bottom of the watermelon will turn yellow.