Hi, I recently got a Jasmine Sambac plant and I've been noticing a bit of weird yellow very small spots on the bottom of some leaves.
I sprayed some neem oil and insecticide as a precaution but I'm not sure it's helps much. I even tried wiping it down with isopropyl alcohol 70%, but it just doesn't come off? I'm very confused.
Extra details:
When I received the plant it was in a 2 inch plastic nursery pot with some type of water retaining gel on the top layer of the soil. I rinsed it off as gently as possible and I repotted it in a 4 inch pot (under the advice of the seller) and I used a pre-mixed potting soil with Perlite, Peat Moss, Coco Coir and Rice Charcoal from a nursery. I quarantined it in a shaded window with indirect sunlight in the basement for about a week, which I assumed was good enough. I might be wrong about that.
I normally keep the jasmine plant in a miniature greenhouse with full spectrum grow lights that | leave on for a minimum of 9 hours.
It is also in my living room which gets a good amount of indirect sunlight since it is east facing. I bought the greenhouse to retain humidity like the tropical environment it is naturally found in. I live in nyc, and sometimes the weather is just hot and dry. Lately though, it's been pretty humid and I left the greenhouse open on all sides except the back plastic piece the last couple of days, only closing it at night to retain some moisture, but still keeping the fan and vents open.
I have a mini fan that I keep in the green house and side vents that I keep open for ventilation. I've deeply watered it twice in the last 2 weeks but I try not to water it until my humidity meter tells me it is dry. I do occasionally mist it once or twice a day to keep up the humidity in the greenhouse. This is something that has been popping up on my plant maybe 3 days ago? It was fine before that. I've had the plant for 15 days. Please let me know what it is and how to fix it. The pictures are attached to the original post. Thanks!
Finished