Hello folks! I too have a problem with my Hoya Kerrii. I've had it for a couple of months now, with the two top-most leaves being new growth during that time. I'm noticing a couple of small issues with the plant after I slightly watered it (~0.1L) a few days ago. The plant is in a container with drainage holes, but it might have suffered a lack of air circulation around its roots as I used a decorative pot around the container. We're headed for the dormant season here, so perhaps it was imprudent of me to water it. The mix itself is from the nursery, but it is very light and filled with chunky material, so I didn't think it necessary to make my own soil mix.
First off, I'm noticing a couple of dark spots on the stem of the new growth. The tissue connecting the leaf to the stem is also unusually black, which has me worried. One commenter pointed out that this might be due to temperature fluctuations, but my Hoya remains indoor and is not in a draft, so I don't suspect this to be the cause. I should mention that at this time, both the leaf and the stem feel firm still.
Secondly, it developed a suspect black spot on one leaf, which showed up pretty quickly in ~2 days. It showed up today, so I can't comment yet on how it's developing. The rest of the leaves are fine and have no damages or suspect spots.
Neither of these two issues look to be too serious, but I'd like to make sure that I'm not accidentally overlooking a fungal infection. Is it wise to preventively apply cinnamon or another fungicide in this case, or is it better to wait?
Any advice is welcome, and thank you in advance!
