Old commercial heirloom from 1955, developed by Farmer Seed and Nursery Co., Faribault, Minnesota (USA).
Round to slightly oval orange tomatoes from 100 to 175 grams. The reference to a heart in the name has nothing to do with the shape.
Very thick flesh that tastes more sour than sweet.
Indeterminate growing plants with moderate development.
High yields and very early for a yellow variety.
Good resistance against cracking and excellent shelf life after picking.