Always gathered my best green tomatoes at the very end of summer. Wrapped each in newspaper and placed (in single layer) in cardboard box . Put box in cool, dark place. Check every week to 10 days. You will have ripe tomatoes that taste like fresh picked for another 1 to 2 months. Was told this by a lovely country lady and couldn't believe it. After trying it and only having 2 out of about 40 rot, I became a believer. They don't all ripen at once, hence the long period on time.