Thoughts

[bigroth]

I'm hoping an oncidium alliance forum viewer might be able to solve this mystery. The spots are fleshy, raised. It's happened to one miltoniopsis at present(pictured) and once oncidium (6 months ago). They are in proximity to numerous other orchids that don't have this issue.

[RandomGemini]

I would treat with an antifungal just to be on the safe side. I love this alliance, but the leaves are thin and I feel like a lot can go wrong with them because of that. I only have one oncidium alliance plant with perfect leaves. The others all have some sort of something happening. I do give them a spritz of physan when I think something may be going wrong and am generally of the "spray first ask questions" later mentality with this alliance.

[silken]

Originally Posted by RandomGemini

I would treat with an antifungal just to be on the safe side. I love this alliance, but the leaves are thin and I feel like a lot can go wrong with them because of that. I only have one oncidium alliance plant with perfect leaves. The others all have some sort of something happening. I do give them a spritz of physan when I think something may be going wrong and am generally of the "spray first ask questions" later mentality with this alliance.

My thoughts also.

[bigroth]

good thoughts... I did give her a good mist of 'ol physan last week. haven't had the greatest luck with it in the past (could be my dilution skills) but will keep my fingers crossed! luckily it's not the whole plant that's effected

[silken]

Originally Posted by bigroth

good thoughts... I did give her a good mist of 'ol physan last week. haven't had the greatest luck with it in the past (could be my dilution skills) but will keep my fingers crossed! luckily it's not the whole plant that's effected

If it's only 1 leaf, I would be tempted to cut it off.

[bigroth]

Originally Posted by silken

If it's only 1 leaf, I would be tempted to cut it off.

Turns out it was at least 4-5 leaves. I cut off the top 1/3 of some...I also put her in a brighter spot.

[RJSquirrel]

good luck trying to grow that perfect plant ...

orchids get all kinds of crap, spots, crust, rust, etc etc..

...and most of its insignificant to the overll health of the plant

more often than not its just ugly...

[NYCorchidman]

I say otherwise.
While diseases or physiological disorder of various kind might present themselves every now and then depending on the care and situations, I find oncidiums (and not all oncidiums) particularly prone to leaf issues.
Hence, I don't deal with them any more. lol

I have hundreds of orhids and I do get sick plants but that happens on just a couple out of hundreds each year. and some lucky year, I have no problems at all.
Sickly plants just freaks me out because it worries me much. I spend too much time taking care of my plants and last thing I want is disease spreading in my collection and ruin them.

Early detection and removal is the key.


By the way, regarding to this specific issues of those raised bumpy green areas, I have seen them on some miltoniopsis and wildcat varieties.

My guess is either just some physiological disorder that does not harm the plant or work of virus.
I do not think it's a work of bacteria or fungi.
You don't need to cut them off.

When you see brown or black mushy rot that spread fast, then you know you have bacterial or fungal pathogen at work and you want to act fast.

Common leaf spotting, all by fungal organisms, do not seem to harm others while oncidiums tend to get them so easily.

[bigroth]

Originally Posted by NYCorchidman

I say otherwise.
While diseases or physiological disorder of various kind might present themselves every now and then depending on the care and situations, I find oncidiums (and not all oncidiums) particularly prone to leaf issues.
Hence, I don't deal with them any more. lol

I have hundreds of orhids and I do get sick plants but that happens on just a couple out of hundreds each year. and some lucky year, I have no problems at all.
Sickly plants just freaks me out because it worries me much. I spend too much time taking care of my plants and last thing I want is disease spreading in my collection and ruin them.

Early detection and removal is the key.


By the way, regarding to this specific issues of those raised bumpy green areas, I have seen them on some miltoniopsis and wildcat varieties.

My guess is either just some physiological disorder that does not harm the plant or work of virus.
I do not think it's a work of bacteria or fungi.
You don't need to cut them off.

When you see brown or black mushy rot that spread fast, then you know you have bacterial or fungal pathogen at work and you want to act fast.

Common leaf spotting, all by fungal organisms, do not seem to harm others while oncidiums tend to get them so easily.

My money is mostly on nutritional/environment vs viral.
The oncidium I previously had with this issue started turning a shade of very dark green which tells me it wasn't getting enough light. I'm thinking it may have had its root shot by overwatering too vs fertilizer burn (despite diluting to 1/4, I think I burn these guys up regularly). The mature leaves on that oncidum got very limp and remain so, but it started shooting up a ton of new growths. On this particular miltoniopsis pictured, I did end up cutting off the damaged parts of the leaves (turned out therw were a lot more than I thought), but it shows no evidence of limp leaves and has one new growth. Seems to be happy-ish in a brighter room. The position of the sun shifted where it used to be (in a bathroom) and I def think less light was a factor (whether than means fungal, I'm doubtful).