Is this sunburn on my phals or too much light?! Please help

[Orchid grower]

Hello everyone!

Recently I added supplemental lighting to my orchids. Nothing too intense just 35 watt full spectrum lights that have 3 gooseneck lights. Its fairly small and I got it as we were having some very gloomy days in British Columbia.

Past week or so the sun has started to come out and my phals might get 1-2 hours of some direct sun usually between 2-4pm in the west facing window.

I've noticed on some of my phals that there is a green tinge on the edges on the leaves. I'm very scared of burning my phals and not sure if this is what has been happening or not.

My initial thought is they are getting too much light but I wanted to attach some pics and get some of your thoughts.

I'm attaching pics of two of my phals. On one of them towards the bottom/middle of the leaf there is green streaking which I am about 100% sure is sunburn however that's not what I'm concerned about.

Please look at the EDGES of the leaves. On my mini I noticed it feels like it's almost sinking in around the edges so could this be dehydration or something else.

Thank you for all your help!!

[Ray]

Nope. Sunburn appears as a brown, collapsed patch that eventually turns into a brittle, parchment-like area.

[WaterWitchin]

I have a couple of mounted ones that I haven't been watering often enough. They have the same look as yours. Someone else posed the same question about a month ago, and I was going to respond to it and couldn't find the thread.

I think it's lack of humidity and first signs of underwatering... at least in my case. And I've seen same before in phals of mine with low humidity and some benign neglect on watering that were potted in bark, not mounted. I always see it as a shoutout to get a bit less lax on my part.

Perhaps with your new lighting they're drying out faster?

[Orchid grower]

Originally Posted by WaterWitchin

I have a couple of mounted ones that I haven't been watering often enough. They have the same look as yours. Someone else posed the same question about a month ago, and I was going to respond to it and couldn't find the thread.

I think it's lack of humidity and first signs of underwatering... at least in my case. And I've seen same before in phals of mine with low humidity and some benign neglect on watering that were potted in bark, not mounted. I always see it as a shoutout to get a bit less lax on my part.

Perhaps with your new lighting they're drying out faster?

Hi thanks for your response! I think you may be right about the humidity.. that was my second thought if it was not sunburn. I will incorporate a humidifier into my setup. thanks again!

---------- Post added at 12:47 PM ---------- Previous post was at 12:42 PM ----------

Originally Posted by Ray

Nope. Sunburn appears as a brown, collapsed patch that eventually turns into a brittle, parchment-like area.

Hi Ray, thanks for your response! Well that's good to hear its not sunburn. Is it possible this could be from high light?

The post after yours mentioned it could be a lack of humidity which I do think could be a issue as I believe I do have lower humidity around 30-50% so i will add a humidifier I have laying around.

I posted on a Facebook group and got a couple responses saying this is leaf vareigation but I'm not sure I agree.