Here's another photo of a different leaf

Odds favor it being related to over-watering and/or a high level of soluble salts in the soil, but I'd need to know more about your soil and watering/fertilizing habits. Another real possibility is oedema, a physiologic malady related to over-watering and other cultural conditions, particularly over-watering + low light + cool temps. If you contact me off forum through my user page, I'll send you my email address & you can attach pictures to your reply. As a bonsai practitioner, I have a number of species of Ficus specimens and am very familiar with the genus. You might wish to read the thread at the link I'll leave & post your future questions there. This forum is primarily, though not exclusively, dedicated to discussion of the hardy fig, F carica. Al Here is a link that might be useful: More about Ficus in containers if you click me .....

Hi all, I have three ficus lyrata plants which I have had outside all summer, and moved indoors for the cool season about a week and a half ago. Two are a bush shape in my living room, and one is a tree in my kitchen. Last week, on a plant in the living room; I noticed small holes in the leaves, some minuscule webbing near the stems/trunks, and upon removing it from its rolling stand to water, noticed whitish, almost invisible insects on the rolling tray (spider mites?) I used Safer insecticidal soap concentrate to spray the leaves, did a soil drench with a bit of concentrate mixed into the watering can, then gave it a shower in the tub. Just now while checking out the tree in my kitchen, I've noticed these white patches on the leaves (both tops and undersides), and some brown spots on the undersides as well. The brown spots could be oedema from when I first got it about a year ago. I brought it home with some on quite a few leaves. There is none on any of the new growth since I've had it. But it's the the white patches that are concerning me! It appears healthy otherwise. I began cleaning the leaves off with a damp cloth, and then thought to post here. There aren't any holes in the leaves, just these white patches. What could it be? I just gave it a shower a few days ago (these plants are like my third, fourth and fifth children, obviously) and so I'm hesitant to do another soil drench, as it won't need another soaking for about a week and a half. thoughts?

I know you've been around the forums for a while, so I'm wondering if you've been monitoring soil moisture levels with a 'tell'? A tell is much more effective than a "moisture meter" or a digital device (a finger). The symptoms do look like there are issues in play which are related to an overly water-retentive soil and or a high level of salts in the soil. Please tell us how you decide when it's time to water, how you fertilize, what you use, and how often you apply the fertilizer. Does your pot have a drain hole? Do you have a set-up so that once water exits the drain hole, there is no possibility of the effluent finding a pathway back into the soil. What kind of temps, light levels, humidity, is the plant dealing with? Water uptake is an energy-driven process, and it takes oxygen in the root zone to burn the food to make the energy. An inadequate oxygen supply = limited root function = an inability to move water to the plants most distal parts (leaf tips/margins) = the manifestation of the symptoms depicted in your images. So, let's wait to see what you have to say, then see if we can determine what needs fixing, then develop a plan to get it fixed. Al