If you're building a backyard orchard, you may be considering adding a fig tree in anticipation of the tasty bars, pies and jams you can craft from the tree's flavor-packed fruit. But perhaps you've heard the tree flourishes in the Mediterranean and since you don't live in the Mediterranean, you need more information about whether you can get a fig tree to fare well in the soil in your backyard.
Fig trees (Ficus carica) typically grow to about 10 to 30 feet tall, but can grow as high as 50 feel. Figs are spreading and attractive -- the wide stature of this deciduous tree features numerous branches adorned with deeply lobed large leaves (up to 10 inches) that offer plentiful shade. Cut open, the fruit may be any of a number of hues: dark purple, yellowish green, bright green, coppery or bronze.
The Right Soil
Fig trees can be grown in a range of soils, including limestone, light sand, rich loam or heavy clay. The trees can tolerate moderate salinity. Be sure your planting site offers sufficient soil depth and good drainage, and ensure the soil is not highly acidic, as fig trees cannot tolerate low pH (pH 6.0 to 6.5 is best). If your fig harvest is intended for drying, plant your tree in a medium-dry, sandy soil that contains quite a bit of lime. Fig trees like full sun, so also take that in account when choosing your site.
Where Figs Grow
While fig trees are native to western Asia and quickly spread throughout the Mediterranean thousands of years ago, the trees now flourish in particularly well in U.S. Department of Agriculture hardiness zones 8 to10.
Caring for Figs
Newly planted fig trees should be watered at least three times a week with 10 gallons of water per application. Though fig trees will do just fine without any pruning, you can gently prune your fig tree in late winter if space considerations mandate it. A hard prune can reduce production, however, so it's best to be cautious. If your tree needs fertilizing, apply 1/2 to 1 pound of nitrogen, divided into three or four applications beginning in late winter or early spring and ending in July. Light fertilization will keep the tree producing lots of fruit; try of one pound of 8-8-8 for each year of age of the tree until the tree is 12 years old, and then apply 12 pounds per year going forward.
Source = http://homeguides.sfgate.com/kind-soil-fig-trees-like-78134.html