I planted some jublie watermelons about 2 year's ago and they would sound ripe when thumped cut it open and still be green. Waited till the vine started to discolor same thing still green even went as far as the vein being rotting off and still green. A old timer told me I messed up when I limed my garden area I don't know if he was correct or not but most old farmers had been there done that and hardly ever wrong. I just wanted to get everyones input. I ended up plowing them up and didn't mess with it the following year and had some volunteers start growing and ended up geting a few ripe one's.
I planted some jublie watermelons about 2 year's ago and they would sound ripe when thumped cut it open and still be green. Waited till the vine started to discolor same thing still green even went as far as the vein being rotting off and still green. A old timer told me I messed up when I limed my garden area I don't know if he was correct or not but most old farmers had been there done that and hardly ever wrong. I just wanted to get everyones input. I ended up plowing them up and didn't mess with it the following year and had some volunteers start growing and ended up geting a few ripe one's.