Ask a Question forum: Help! Is my Hoya sick??

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Attica
Amenra
Aug 18, 2017 5:58 AM CST
Hello everyone!

This is my first post here. I'm not very experienced with hoyas, but I've had this plant for 3 years and I love it and dread something happening to it!

This is the overall look of the plant.
First off, are these white spots normal? I think it has had them since I moved it indoors a couple of years ago.

Thumb of 2017-08-18/Amenra/b85489

Thumb of 2017-08-18/Amenra/2c1bb5

Recently I've noticed that after a couple of years of doing great on top of my fridge, it has stopped growing new leaves. Also, some vines seem to have dried out at the tip, and now on one of them the leaves are gradually yellowing, from the tip going up.
I just read that the vines shouldn't be growing downward, so I guess that could be the cause?

Here is the last part of the vine that I cut off

Thumb of 2017-08-18/Amenra/8fecb3

Here's another vine, dried out and with slightly yellower leaves at the tip.

Thumb of 2017-08-18/Amenra/d707e8

In addition, some leaves are curly like this one

Thumb of 2017-08-18/Amenra/043d17

Finally, I just took the plant outside for a shower, and noticed these black spots underneath some leaves =\

Thumb of 2017-08-18/Amenra/e79590

Thumb of 2017-08-18/Amenra/4c9057

Thumb of 2017-08-18/Amenra/116e03

Can someone tell me what's wrong with it?

Note that I live in Greece, so the temperatures can get up to 30-35°C indoors.
I keep the plant in a pretty well-lit north facing room.
I water once every 1-2 weeks in the summer (generally keep it on the dry side cause I almost lost it to overwatering in the past), and occasionally fertilize with an all purpose liquid fertilizer N-P-K 6-5-6 for green plants.
Name: Will Creed
NYC
Professional indoor plant consultan
Image
WillC
Aug 18, 2017 11:27 AM CST
I believe that your Hoya problems are due to excess temps and inadequate light. Try to keep temps below 27 C. Hoyas need lots of direct indoor sunlight, which you are unlikely to get on top of the fridge. At a minimum, it would have to be right on the windowsill of a north window.

The white spots are normal.
Will Creed
Horticultural Help, NYC
www.HorticulturalHelp.com
I now have a book available on indoor plant care

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