Yes it will grow into a tree. It may take longer to bear than a grafted tree. The fruit may or may not be as good as the original. My Asian friends grow them from seeds and get the same fruits, but these are not the same variety as the big red ones you get at publix. I have one growing, but I haven't had any fruit yet. There were some post earlier this year on this forum on this subject. Search "mangos from seeds. john

the variety will be a seedling of whatever mango you planted the seed from. the picture you posted is definitely an Indian type meaning it will have a monoembryonic seedling which will NOT be true to the parent, in fact it may not fruit at all or produce undesirable characteristics like stringy turpentine flavored mangos susceptible to fungal disease. from my experience and knowledge your seedling will most likely not produce desirable fruit, but it might. maybe even better than the parent, but not likely. the only way to grow an Indian variety of mango is by grafting a known varietys branch onto a seedling rootstock. Asian mangos, which are more kidney shaped and typically green or yellow, are mostly polyembryonic which means they will grow a sprout that is true to the parent along with other sprouts that might be variable this is probably the result of thousands of years of different propagation practices in Indian and East Asia if you go into the tropical fruit forum you will meet many people who grow mangos in zone 9 using outdoor winter protection. mango trees can grow large and vigorous however there are probably well over 1000 named cultivated varieties from around the world, some of which grow slow and dwarf, around 10 foot. this is a relatively new practice, cultivating dwarf varieties and pruning them small for backyard growers instead of large commercial trees. many new cultivars being introduced by nurseries like Fairchild Botanical Gardens are dwarf. mango trees also take extremely well to pruning, all my trees survived borderline freezing temperatures we experienced this freak winter

"I disagree with the comment about mango from seed usually not tasting good" While you may disagree with the original comment "Most times not", I have to say that I have a mango tree in my yard that was grown from seed and it tastes like some type of petroleum based cleaning liquid. The funny thing is, the seed "MUST" have tasted good because the PO of the property wouldn't have planted the seed in the first place... that is unless they siphoned gas at night for a living and had no taste buds left? :-) Anyway... I'm going to pull it from the ground along with a HUGE (completely unproductive) avocado the PO planted TWO FEET from the Mango seed... sheesh. My only guess for that kind of act is that somehow they thought that the little trees in nurseries that had fruit meant that their trees would be dwarf specimens? TG for websites like this one. Gary

The reason the one in the top video had a growth "spurt" but stopped growing, is that it used the energy from the seed to grow, then , after about 2 sets of leaves, it runs out. mango is very easy from seed, at least for the first 2 sets of leaves because it uses the energy from the seed. as long as it has water touching the roots. i have thrown mango seeds in my worm bin with the lid on, completely dark, and pulled live seedlings with leaves from the bin. after this point it needs sun (bright light) and fertilizer. personally, i dont like chemical fertilizers, especially on a plant this size, its very easy to burn the roots, so i just use compost, or rich soil... No one fertilizes the forest, and plants seem to grow quite nicely there. slowly acclimate seedlings to full sun over a period of days or weeks. (1 hr per day, then 2, etc...) mango seedlings are fairly sturdy little guys in this respect though. i have put them in full sun right away and they lived, but i dont recommend it