Fertility can be controlled by the owner. A tree bark component is sometimes used, especially in the Northwest. The time it takes to grow a tree to harvest varies with species, desired size, site, soil, growing season, maintenance and watering, and other factors. Growth rates at nurseries located at higher elevations where the growing season is shorter would probably be slower than those at lower elevations. If there is a nursery in your area, check with it to get an idea how long it takes to grow a marketable product.
Some species are slower.
Ideal growth rate is 10-16 inches a year. Catalog offers considerable information. Catalogs are available at the Expo from numerous nursery stock suppliers.