Hello!
I just bought a Barbados Cherry tree seedling that I want to turn into a bonsai and I just want to know if this seedling looks healthy. I heard that cherry trees tend to grow the "White Powder" fungus and I see that the trunk and leaves look a bit white but they don't really match the images of white power online. Is it something natural? I also see some tiny brown spots underneath the leaves (It's not soil I checked, only the lowest leaf in the front in the first picture has soil on it).

That's definitely looks like some fungal issue.

Looks like there's some high humidity going on there, and that species (We call it Acerola here in Brazil, very common between Bonsaists) like it REALLY hot and not that humid.

I had a seedling, lost last winter, and it wasn't even that cold, when it started to recover a slug ate all it's sprouting new leaves, and well, RIP. Since then, I've been focusing in other species.

I went to my neighboor to take a healthy branch to show you...

We are on mid/end summer now, you can see how shiny their leaves are, as we are on a sub-tropical climate here, they suffer on winter, and has a considerable leaf shedding.

What I can tell you is that this species is way more common on South-East / North-East Brazil than here on South, and I've heard that on North-east, they can produce many times tru' the whole year (And it's hot there, they don't have a "winter", but more like a raining season).

Fun fact: Brazil is the largest exporter of this cherry.

Okay I will ask for a replacement, thank you! I will make sure to keep it away from a humid environment in the future.

Well, like I said, it looks like, but if you can, talk with the people who sold you, take a look how they keep them.

Even because (I'm guessing) you seem to be on winter now, and as I said, they don't look much good on winter.

Btw, Oidium is not that hard to treat, I had a case on a Flametree, one aplication of fungicide, and it was gone.

I seriously doubt this is fungal. and put it to be calcium deposits from watering over the leaves.

leatherback wrote:

I seriously doubt this is fungal. and put it to be calcium deposits from watering over the leaves.

Could be, in which case it would be easy to say so, you could clean the leaves, and when watering, don't get the leaves wet, then see if it comes back...