Twisted and Deformed Leaves

As I was organizing and better arranging my collection under the newly hung grow lights I noticed this very odd plant. I imported this hoya from Thailand in the spring of 2013 and it has done very well but I’ve noticed some very strange leaf growth happening. Although I am not positive this growth appeared while positioned under a T5 fluorescent light fixture…I did not notice these odd shaped leaves when I moved it to the lighter spot. One of the long lean sculpted leaves is even twisted. I checked the leaves thoroughly and did not notice any pests or any foreign substances on any part of the plant? Anyone else have this happen? I have since…moved it to a position under a Metal Halide light which provides the needed light without being so close to the actual bulb. This hoya is labeled Hoya sp. UT 039.

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Twisted and Deformed Leaves

Hoya sp. UT-039

Twisted and Deformed Leaves

What is the cause of deformed leaves?

Twisted and Deformed Leaves

Compare to growing outdoors in Florida sunshine.

 

Posted in Hoya Chat.