Tropicals & Tender Perennials: Help! Stuff on back of Hoya leaf, good or bad?, 1 by plantladylin

plantladylin wrote:
My H. blashernaezii came in a trade from someone here on DG a year ago. I don't think she is a subscriber anymore, haven't seen her post in a long time so I don't know where she got the original plant, whether in trade or a purchase.

Earlier today I put this Peperomia plant out in the rain because it was quite dry. Just now as I was returning it to it's place on the porch I noticed the undersides of a couple of leaves have a similar scabby, scaly growth, only dark brown in color. I've had this plant for @ 10 years but I don't know which are new leaves and which are old leaves!

The plants affected don't seem to be suffering in any sense, no yellowing leaves, distorted growth, dying stems etc. I'm wondering if it is just something happening to the plants as they age ... Maybe they are just getting it from me, I'm getting a little scalier and crustier as I get older!