I have 2 plants and only one has this problem. Also, no bugs under the leaves. If I had bugs, wouldn't be on both plants? Two days ago, I gave 3ml/lt B/M/G to each plant for first time. Is it, maybe, nutrients burn? Ph of water is 6-6,5.
Thank you for your interest.
the burn would be the very tips it has a very slight burn , but them dots look strange made me think of thrips , im not to sure what it is , hopefully someone will chime in
I am very sorry to be the bearer of horrible news, but that looks exactly like spider mite damage. They are almost impossible to see with the naked eye, so please look again. Look under the leaves with the pinprick damage, but especially look down at the bottom of the plant, in the first couple of forks. Look for black spots on the trunk, and if you look very closely, some of them will be moving. Look for webs. If you see even one web, it confirms it. They say that once you see the web, it is too late... you have an infestation.
Confirm this fast and get moving on this... spider mites can take out an entire room.
I do hope I am wrong. Is this on one plant or several? Is it located in one geographical location in the room right now? Pinpricks... Which then begs the question, which nutrient deficiency results in only leaving pinpricks on leaves instead of cannibalizing whole regions of the leaves?
if it is mites, yes, eventually both plants will be affected by being in the same room. They had to start somewhere though... and that would be the plant being eaten up right now. Get a magnifying glass and stare at that lower trunk for a while...
The white dots are easy to see. The black mites on the reverse side are very very hard to see. I just went thru a spider mite problem. I used a +20 magnifier and even then they were hard to see. You wont see the tiny blk mites with a naked eye. They move every slowly too, so if you see q blk dot, keep staring at it for a while. Not all pf mine moved too...only some.
The good news is, is that if you have them, the fix isnt expensive nor hard to do. I used Spinosad. Captains Jacks to be more specific. It was $8.95 a pre mixed spray bottle at my local nursery.
the next problem is figuring out how it got that way. I blamed the cat for one of my outbreaks... the next one was on me from bringing in some strawberries for the winter.