We have a beautiful garden. Large green plants with lots and lots of large green tomatoes? Why are they not turning red? Only two have become red and they split around top. Why?
Certified GKH Gardening Expert
Normally if tomatoes will not ripen, it is an issue with the temperatures. Have you noticed that it has been cooler (or not)? Tomatoes need heat to ripen well and if they don't get that, they may stay green for some time. Give it some time and they should begin to ripen. If not, you can set them in your windowsill and they will turn red for you.
Also, the splitting of the tomatoes is known as cracking and is normally due to a watering issue. Have you gotten a lot of rain lately? This article has mor info: https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-cracking.htm