25+ Seeds. Aunt Ruby’s German was developed by Ruby Arnold of Greeneville, TN. Large, green beefsteak tomatoes average about one pound with many larger. Sweet, juicy flesh with a delicious tanginess. The tomatoes are ready to harvest when soft to the touch. If you have never grown a green variety, Aunt Ruby’s is the one to try. 80 days, Open-Pollinated, Indeterminate.