posted 7 years ago
Intensive (close spacing) of fruit trees is best done in large areas where you plan to thin the weak trees as time goes by.
This method will work in smaller spaces like a typical city or suburb back yard but you must understand that you will end up with far fewer than you initially plant.
The main reason you plant intensively is to be able to select the best of the best and remove the rest, this happens over a fairly long period of time, usually 10 to 15 years.
Thus you end up with an orchard full of very hardy, good producing trees that will service you for the next hundred years or so. (semi and full dwarf trees are not very long lived when compared to full size trees)
As marcus mentions, mix them up in alternating trees. A fruit tree from seed will take seven to ten years to first fruit, this period is the root establishment period and the crown shaping period.
Most fruit trees will set far more fruit than they are able to support to full ripeness, once the tree figures this out it drops all the fruit it won't be able to support, and it may do this two or more times through a growing season.
The number of fruits will increase every year once the tree root system is fully established, most trees will double the number of ripe fruits every two years, some every year, until they reach the point of maturity when they tend to produce the same numbers every year after.
Weather is a huge factor, high wind, lack of or glut of rain fall, temperatures, sun intensity are all things that will affect the crop of fruit on trees.
Redhawk