Hello, I'm new to the forum and new to seed-keeping. I've had gardens in the past; however, this year I decided to try seed-keeping. I have cucumbers in a hydroponic system. I left one of them on the vine to ripen for keeping the seeds. However, I am not sure as to when I should pick it. It was one of the first of the season and has been on the vine for quite some time now. It has been this whitish color for a while now and I'm unsure if it's ready. If anyone can advise me on this it would be greatly appreciated. Thank you.