Quote Originally Posted by kiwiorchids View Post
Here are some mealy bug pictures:

Name:  mealy bug 2.jpeg
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Name:  mealy bug.jpeg
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And the mealy bug surely wouldnt colonise the stakes, only use them as a pathway to get from one point to another. I would expect to see a number on the plant.
Unfortunatly my stakes are too dry atm because of a short dry period i am giving the orchids. so no mold/mildew on them atm!
Yes, great pics of heavy mealy bug infestation. Looking at the second picture the two white spots on the leafs look like a mealy bug. I have also had them lay their eggs on the stakes of some plants and even on the bark. That is why it is recommended that all that be removed and discarded to get rid of them. I agree with Bruce that the other residue looks more like salt build up.