Tropicals & Tender Perennials: Hoya Problem, 1 by evr

evr wrote:
Hello,

I'm trying to help out a fellow DG member who is also fond of hoyas, but she is not a registered member of DG. The bottom picture attached is her Hoya australis and this is the message she has sent me:

I received it from the supplier with some spots on leaves as you can see on the photos.
It appears on more leaves now, seems like it's spreading.
Spots on leaves look like washed-out. They quickly appear on the edges of the leaves and become more yellow. I took some cuttings from this pant and potted.
It looks like new grows get similar spots on leafs.

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I cannot pin point out the exact illness of her plant: not sure if this is overwatering or too much sun. I did remember that one of my hoya plants had similar yellow specks too...just wondering if this is from a deficiency of some sort...

Any suggestions?

Eliz