I can't seem to identify this disease.

[lichanura]

Hello. I have a few plants that are not doing well at all and I cannot seem to figure out what it is so that I could try to treat it. Any one help with ID of the disease? Thank you very much.

[WaterWitchin]

I'm no expert, but it sure looks like Erwinia to me. I would get them far away from the rest of your plants for starters. I can't tell you how or what to treat with, but someone else may have some ideas. It's super hard to get rid of, IF you even can, in my experience.

Were they mine, I'd pitch them. Harsh, but you sure don't want them infecting other plants.

[estación seca]

What are your growing temperatures day/night? Humidity? We had a very cold spell a couple of weeks back and you're even colder than metro Phoenix.

[Ray]

If it is erwinia (which is my best guess, too), a copper-based treatment might be effective.

[lichanura]

This morning temperature in the green house is 56.6F and daytime has been around 75F. Fan is going 24/7. I have a 1500W heater in the 10X12 foot green house.
Thank you all for your responses.

[estación seca]

It was a lot colder two weeks ago. This might be cold damage.

[lichanura]

Estacion seca; I think that you are absolutely correct. I viewed pictures on-line of cold damaged orchids and the damage to mine look very similar. Thank you very much. It makes me feel much better.

[rbarata]

From what I've read, cold damage symptoms start to show up when the plant returns to a warmer environment.