Most fruit trees grown from seed will take around 8 to 10 years before they bear fruit. Grafted fruit trees can have fruit in a year or two. Since you have trees already grown from seed and they are flowering, leave them alone. You probably won't get any fruit to set though for a few more years. Be patient.

My home grown avacados have been in the ground 6 years this year. One produced last year. After flowering profusely it gave me precisely 3 avocados. LOL, better than nothing. The other tree looks like it might flower this year. I currently have 1 homegrown and 1 grafted tree in bloom, and 1 homegrown and 1 grafted not blooming.

Go figure. It's more to do with the Type (A or B) that you have growing on when it begins to flower.

Expect very little fruit the first year as during the maturation of the fruit the tree will drop what it can not handle.

Water like always, fertilize lightly (if you overfertilize you might stimulate green growth and the tree will abort more fruit) and cross your fingers!

Can't wait to see the fruit of your labor.

Barbie

Also "if" it does fruit there's a very good chance the fruits will be very fibrous/stringy unless the mother plant is "polyembryonic" and you will have a much better chance of it being a clone. Unfortunately, just because the tree blooms doesn't necessarily mean it will hold fruits (like Fawnridge mentioned) especially since its seed grown...but you never know? It might surprise you.

Check out this great link...lots of good info.

Here is a link that might be useful: Growing Mangoes

Both will take awhile, but Mango's will fruit years sooner than Avocado's. My 15 gallon nursery bought mango trees took about 4-5 years to set their first fruit this year. Probably some variation with variety. My 15 gallon avocado trees have yet to fruit or flower after 4-5 years tho they have grown relatively quickly as well.

No, most likely there'll be no fruit this year. However, nothing ventured, nothing gained, so if inclined, nurse them and see what happens. Some topsoil & compost added at planting, then lightly fertilize for 1st year. Make sure they get regular rain/watering first year, should be enough to get them well on their way. Then you'll have a better idea of what you have. You may be disappointed like I was, but then again, you may love what you see. Mango trees are very easy to maintain.

Needless to say, if you get serious about growing mango's sooner, then of course buy a grafted tree and have at it. A Glenn wouldn't be a bad choice to start your plantation ! Good luck !

My mango's are 6 years old and just now starting to produce fruit. My avocado's are also 6 years old and have never produced fruit. All are grafted nursery trees. Things will always vary by variety and whether trees are irrigated and fertilized regularly. It can often be 1-3 years from first flowering to first holding fruit to maturity.