Propagation Polyembryonic types generally come true from seed, which is the common method of propagation in the tropics. Monoembryonic types do not come true from seed, so they must be grafted onto seedling rootstocks, using almost any available mango seeds. The fibrous stone or pit should be removed from the seed. The seed should be planted concave edge down and about 1 inch deep in any good potting soil. Veneer or side veneer grafting and chip budding are the most successful methods of propagation.
Most propagation occurs in winter, using rootstocks grown from the previous summer's production.
Cleft grafting is also practiced. Planting Because of frequent freezes, mango trees may not achieve maximum size, so they can be spaced 12 to 15 feet from each other or other trees. Because trees are normally grown in containers of soilless media, much of the outer layer of media should be washed off the sides and top of the root ball immediately prior to setting the tree in the ground. This practice exposes the outer part of the root system to the actual soil in which the tree must grow, thereby enhancing tree establishment. Newly planted trees should be staked for support for the first year.