Growing Mango Trees From Seed
Growing mangoes from seed is actually quite easy. (All the seeds of the mangoes I eat, dry and freeze are thrown out in the garden as mulch, and they all grow...)The most important step is the seed selection! If you take any old shop bought seed it may not grow true to type. The seed needs to come from what is called a "polyembryonic" variety.What that means is that the seed will sprout several identical trees. And those seedling trees will be identical to the parent tree. They are clones.Ideally you know the parent tree, it's from your area, grows really well and gets a bumper crop every year! If not, oh well. Get seed from a polyembryonic variety and at least you know that the fruit you harvest will taste the same.(The most common commercial variety in Australia, the Kensington Pride—also known as Bowen-—is polyembrionic. It's also a vigorous tree and usually fruits reliably, so it is well suited for seed growing.
If anyone knows a good variety to recommend to US readers, please let me know.)The best time to grow mangoes from seed is the beginning of the wet season (beginning of summer).Eat a nice mango, remove as much flesh from the seed as possible and then let it dry for a day or two.To germinate the mango seed you could just put the whole thing in a warm, moist place and wait for it to sprout. Then cut off all the seedlings except for one. (The smallest supposedly gives you the best fruit.)Or, if you prefer to fuss over them (or if you have only one seed but want half a dozen trees) then you can carefully cut a corner of the fibrous big seed. Cut only just deep enough so you can see the two halves of the seed, and then break it open.Inside you find several small bean shaped seeds. Hopefully they are white and not all grey or brown and shrivelled...You can plant those mango seeds individually. They should take about ten days to sprout. I like to sprout my seeds right where they are to grow. That way I don't need to worry about hardening them off (getting a shade grown seedling used to full sun) or about transplanting shock. If you are worried about the little thing getting eaten, uprooted or trampled you can always put a barrier around it.