Plum trees can be grown almost anywhere in the United States (zones 5 through 9) and require little maintenance. And although plum trees grown from seed can take several years to produce fruit, they will make a decorative addition to your yard in the meantime. Be sure to acquaint yourself with the type of plum tree that you are growing. Some plum trees are self-pollinating, but others require a mate to produce fruit.
Prepare your plum pit. Eat the flesh of the plum, then scrub the pit, removing any remaining flesh. Allow it to dry for 3 days, then wrap it in a moist paper towel, place it in a plastic bag and store it in the refrigerator for 12 weeks. This will start the plum pit's germination process.
Choose a spot in your yard. Plum trees need direct sunlight for as much of the day as possible, although a little shade in the morning or late afternoon will not affect their growth. Avoid areas where the soil is prone to over-saturation or drought. Plum trees have few soil demands, but well-drained soil is at the top of the list.
Prepare the soil 1 month before planting your plum seed. Dig a hole that is 4 feet by 4 feet by 2 feet. Turn it with three heaping handfuls of organic compost (or until the soil takes on a crumbly texture).
Plant the seed. The best time to plant your plum seed is in October, although it can be planted anytime between September and early March). Plant the seed 3 inches deep. Mark the spot so you can find it when it emerges in the spring.
Water the plum seed. Trees should be watered every 7 to 10 days if there has been no rain during that time. Lay a slow-running hose on the soil or use a root feeder. Over-watering will cause pit rot, especially before the tree is established. Keep the planting area moist but not wet.
Fertilize the plum tree twice a year after it is established, in early spring and in August. In the spring, spread compost around the tree to the drip line (be sure not to apply it too near the trunk, or you will burn it). In the fall, use a 10-10-10 fertilizer (8 oz. of fertilizer for every year).