- 1). Cut a mango in half lengthwise with a knife. Pull the two halves apart and pry out the pit from the center of the fruit. Wash the mango pit in warm water to remove any remaining pulp.
- 2). Fill a 6-inch plastic pot full of potting soil so that the surface of the soil remains 1 inch below the top. Dig a 1 1/2 to 2 inch deep hole in the center of the soil and place the mango pit, concave side down, in the hole. Cover the pit with soil so that it is buried 1 inch below the soil surface.
- 3). Water the pot thoroughly until water is running from the drainage holes in the pot's bottom. Wrap a piece of plastic wrap over the top of the pot to seal in the moisture. Place the pot in a warm, bright location out of direct sunlight.
- 4). Check the pot every few days to ensure that the soil is still moist. Remove the plastic from off the top of the pot once a seedling appears. Water the seedling when the top of the soil begins to dry.
- 5). Continue to care for the mango seedling in the same manner until the diameter of its trunk has reached 3/8 to 1/2 inch. Transplant the mango tree into a 1-gallon plastic container. The seedling is now ready to be used as a rootstock.
- 6). Harvest a scion from the mango tree you wish to propagate. Choose the tip of a 1-year-old branch that is straight, 1/8 to 1/4 inch in diameter, contains three to four buds and is 10 inches long. Cut the scions at a 45-degree angle and place them in a plastic bag.
- 7). Make a cut in the rootstock, 1 foot from the base of the trunk. Cut into the trunk at a narrow angle less than 45 degrees almost to its center. Remove the scion from the bag. Cut along each side of the bottom of the scion to create a 1-inch long wedge.
- 8). Carefully bend back the top of the rootstock to open the slit. Insert the wedged end of the scion into the slit in the rootstock. Wrap around the graft with grafting tape to secure the pieces together.
- 9). Cut the top of the rootstock off after two weeks. Make the cut at a 45-degree angle just above the graft. Cover the cut with grafting wax or a tree wound compound.
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