Cymbidium yellowing and has green splotches on leaves

[Sylphienne]

Hi, I’m really new to growing orchids and I’ve been panicking about my new orchid in which i got a month ago from an orchid nursery.

When I brought back my orchid I noticed that there were spider mites and mealybugs on it. Then the next day I noticed that the medium, right next to my cymbidium had this white cobwebby stuff. So i looked up videos on YouTube for help and found videos that I needed to transplant my cymbidium which at the time had a full grown flower stalk but not yet blooming. To cut all the dead roots off and spray it with hydrogen peroxide and leave to settle for 15 minutes. For the mealybugs i was recommended to use garlic alcohol by a helpful YouTuber instead of neem oil which i had no isopropyl alcohol or no money to buy it, lol. So i just used neem oil instead.

I wanted to grow it indoors near the windows but then i noticed that some of my cymbidium leaves started to yellow from the tips and sides. I thought that it wasn’t getting enough light as my windows is facing a fence with cat net and my whole backyard is under a porch. So there was still enough light to penetrate through the netting and some transparent parts of the roof. Diffused lighting.

So i took it out from my bedroom and left it partially under the porch outside but also able to get sunlight. Currently it’s winter in Australia. I’m in WA and we have a subtropical climate. So it’s been cloudy sunny and rainy in the day. The cymbidium is also planted in Leca as the medium that it was in was very soil like and the roots were was infested with mites when i took the cymbidium out…

So it’s currently blossoming the flowers haven’t come out fully but it’s starting to and my cymbidium leaves and bulbs are yellow except for the flowering bulb and its leaves. I freaked out when i touched one of the yellowing leaves and with the slightest of touch it just instantly broke off.




I don’t know what these green splotches on a fully yellow leaf mean. I looked everywhere on google and couldn’t find anything about cymbidium with green splotches on yellow leaves. Two of the pseudobulbs are yellowing as well.

I honestly don’t know what to do, I would like it if i can get some help.