Question: what are ultra dwarf fruit trees?
Answer: Ultra-Dwarf Description At 3 to 6 feet tall and 3 to 6 feet wide, ultra-dwarf fruit trees are a good choice for a patio. In spite of their small size, they produce abundant, standard-size fruits. For example, ultra-dwarf fruit trees can produce more than 30 apples or 50 plums in one season, according to Pacific Groves.