Few questions: Mamey sapote, mango, ground cover

[Treees]

Happy weekend !

Looking for some guidance on these questions:
1. My 6ft grafted mamey sapote is heavily loaded with tiny fruits.  Having seen a full sized fruit at a store, I wander if I should thin the fruit or just ignore and let it do its thing.
2. My small Pickering mango developed black patches on branches, something that looks like mold.  Any thing to worry about?  Should I us a bleach or something to try and wipe it ?
3. I found this pretty ground plant cover in a park and brought a stem home, planted next to a tree.  It is spreading well.  Is this a good cover around fruit trees (like the avocado in the photo) or will it compete for nutrients and water too much ?  Will it attract any bad insects ?  Good insects ?

Sorry I am all over the place with these questions.
I live in Palm Beach county in FL.
Photos are attached.

Thank you for your wisdom and advice !

SG

[JF]

I yanked my Mamey of 7 year that produce a whole 2 fruits replaced it with a yuzu lemon that a million times better. My landscaper with his new magana lol

[shot]

Ground cover is Tradescantia pallida {wandering jew}

[Finca La Isla]

I think you should let the Mamey sapote do it’s thing.  They can drop some fruits and the fruits that go to maturity take a long time but I would be encouraged by the fruit set you are getting.

[Treees]

Thank you Finca La Isla, shot, JF.

Shot, is it ok to have Tradescantia pallida as a ground cover below fruit trees?  Worried that is will take away water and nutrients.

The dark patches on the Pickering mango also worry me. Hope it will go away but itself without crippling the tree that has been my favorite so far.

[shot]

Dr. Richard Campbell would let all the weeds grow under his trees .He did not think it would impact the trees in a negative way.Wandering jew plant low demands could not make a dent.

[Capt Ram]

Those are not fruit on the mamey..only flowers, this can go on many years before it actually set fruits...so leave alone and wait

[Treees]

Thank you very much Shot, Capt Ram.

[Tropicalgrower89]

Those small green balls are infant fruit. The flowers look like small round light brownish balls. Then it opens up into nice small white flowers.
The flowers then dry up and fall off leaving behind the tiny newly developing fruits. As they get older and larger, they will loose the smooth green appearance and become scaly like it will be until maturity. The tree will go popping off and thinning out the fruits on it's own. Only a small percentage will stay on the tree if the tree is ready to maintain any fruits.

[Coach62]

Do NOT use bleach. Get a proper fungicide, most likely copper based, but read the label carefully.

[Treees]

Thank you coach62, tropicalgriwer89, much appreciated.

[pineislander]

Surprised to see my mamey flowering too. Less than 1 year in ground grafted Pantin.