How long does it typically take for cherry tomatoes to ripen? Ive got a plant that seems good and healthy and has 8-12 tomatoes on it, a few of which have been there at close to 4 weeks or so and are still nice and green. I would have thought they would start to turn by now, my regular tomatoes seem to go much faster (although I have yet to be able to harvest one of those, either blossom end rot or stink bugs seem to get all of them before they are ripe enough!). The cherry tomoatoes do not show any signs of rot or stink bug attacks. nice smooth, round, green tomatoes.