Experiment with growing fruit trees by collecting and propagating seeds from homegrown or purchased fruit. Hard-shelled fruit seeds should undergo a stratification process prior to planting to increase the chance of a successful germination. The germination process will take from several days up to several months depending on the type of fruit being grown. Your new tree may not match the parent fruit the seed came from as most fruit do not come from a true seed.
Collect fruit seeds from healthy fruit specimens. Collect seeds that are plump, as these are more likely to have a viable internal seed that will germinate.
Stratify the seeds by covering them in a container filled with moist peat moss. Place the seeds in a refrigerator at a temperature of 35 to 40 degrees Fahrenheit for three to four months.
Remove the seeds after the stratification period. Plant each seed in a 2- or 3-inch starting pot filled with an even mixture of peat moss and vermiculite that has been moistened.
Cover the pots with a clear plastic bag to increase the humidity level for germination. Place the pots in a warm location with indirect sunlight. Less light is better than more light for fruit seeds.
Monitor the soil moisture and spray lightly with water if necessary. Open the plastic covering daily to provide air circulation for the germination process.
Move the pots to a brighter area and remove the plastic covering once the seeds germinate and sprouts are visible. Keep the plants indoors for several months until the roots are established and the seedlings are able to withstand outdoor conditions.
Apply a houseplant fertilizer to the seedlings once they reach a height of several inches.