Generally mangos are tough plants, but I think yours is showing signs of the roots having dried out too much. I wouldn't fertilise it just now. What I often do with transplants is soak them in a weak solution of fish/seaweed fertiliser for a while before planting. Regular fertilisers would be too strong for now. If yours is from a seed then it wouldn't have flowered already. Grafted trees will flower smaller. In fact, the graft is as old as the tree it came from.

Do everything that TropicBreezent says to do....if you can....and..... get some shade on that thing! It's not going to grow, or even survive, if it doesn't get some fresh roots growing first and it doesn't need the stress of having sun on it right now....

Good luck!

MDog

For me I would strip off all the leaves and then place the tree in a bucket of water covering the root, and a plastic bag over the tree. Then as soon as possible I plant it in a shaded area until it recover before plant at permanence location.

Sapote

Thanks for the comments, everyone, and my apologies for the delay in responding: I checked the box to have replies sent to my email, but the only notice I received was for sapote's--less than a half hour ago. So I guess I know now not to trust that setup.

Anyway, since the tree is already in the ground, should I be digging it up again? I mean, I don't know if that's a ridiculous question, but, like I wrote earlier, it's in a pretty sunny area. Or is there another option? I don't know if I've ever heard of covering up a tree (like with a tarp or something), but it seems that might make it very hot--and therefore it would probably be a no-no. (By the way, by "another" option, I mean one that's just as good: If digging it up is the best thing to do, I'll do it.)

As I mentioned, this is at my parents' house, so I haven't been able to see it since Sunday, the 25th, two days after I planted it. Below I'll post some pictures I took late that day. The top looked a bit worse, but the rest of the tree looked about the same. My mother has been watering it twice a day since then; she says it looks about the same. With luck, I'll get a chance to go over there this afternoon and see what I think; I'll post photos if I think they add any new information.

Again, thanks to everyone for the help so far.

Dan

I wouldn't dig it up again...I would try and build a shelter from the very hot afternoon sun...maybe some post or PVC pipe stuck to the ground and a shade cloth on top?

And keep fingers crossed...make sure you water it regularly, don't drown it but keep the soil "moist"...while its trying to regrow roots....Best of Luck!!

Oh and I would not remove any of the green leaves...your plant will need all that it has while recovering.

Something like this but make sure the top has a "shade" cloth also...nothing too thick but something that will let some light in but not burn the foliage while recouping...

With all due respect to Sapote, I would not dig it up OR strip it's leaves. I think it's had enough stress to last it's life time! Pug's advice and picture of shading it is great.

I actually think it's got a great chance of living and growing....and I would think a good big drink of about a gallon of water or so once a day (assuming it doesn't rain) is a good idea....

Gosh, now I REALLY want to see this mango "holocaust" survivor survive!!!!!

PLEASE, keep us posted.....

myamberFANG

The last of Dan's pic looks very hopeful -- the leaves looks unwilted. When I saw the bare root photo, first thing in mind was how to stop it from dehydrating by reducing the foliage. Removing all the leaves for mango might not be all good as I am thinking now, but in my case I would reduce at least half of the leaves, especially the ones that already wilted and burned. I know this sounds very cruel to the poor thing, but reducing the leaves in this case is like stop blood from bleeding. I agreed not to dig it up now. Try to provide open shade (not enclose which overheat it) and add water misting to cool and wet the leaves if you can.

Remember when grafting the mango or any trees, the most common method is reducing all of the scion wood leaves (or spray liquid wax to seal up the leaves), or the scion will dry and die.