Dark splotchy markings on my new Renanthera's leaves

[aliceinwl]

I’d lay off the hydrogen peroxide unless you dilute it way down or apply it surgically to breaks. It can cause unintended tissue damage, especially if it gets on the roots.

I’d quarantine it and wait and see. I had similar spotting on an Oncidium type I bought off eBay due to cold damage. With cold damage it’ll get worse as the damaged/dead tissue degrades but it won’t spread. I gave mine a couple weeks for the damage to develop to see which parts were totally dead before I did some light trimming of affected leaves.

In my case, I elected to chance shipping without a heat pack so I knew I was taking a gamble.