Fruit and Spice Park to stay an active garden club member and develop insights on the different fruits that should be planted until she passed away in 1979. In memory of her and Preston B. Bird, South Date County renamed the Redland Fruit and Spice Park to the Preston B. Bird & Mary Heinlein Fruit and Spice Park in 1980. The park contains more than 500 varieties of fruits, nuts, and spice trees. It also includes more than 80 banana trees, 160 varieties of mango trees, more than 40 varieties of grape trees, and 70 varieties of bamboo trees. It also features guava, jackfruit,
Fruit tree propagation fruit production at an earlier age. There is a lack of research on the use of the own root method in large-scale systems. British horticulturalist Hugh Ermen was a prominent advocate of own root fruit trees, particularly Apple trees, following his work at the Brogdale research centre in Kent. The research undertaken at Brogdale did not continue but there has been renewed academic interest in own root fruit trees since the turn of the century. In addition to propagating trees on rootstocks designed to control size/vigour and confer disease resistance, grafting above the rootstock can be used to provide multiple