No it isn’t, the first thing I thought was root rot so I checked the trunk first to see if it was soft. It’s still solid.

I've often left these 2 explanations on this forum about questions that come up about the 2 following features of Ficus leaf anatomy. Ficus Anatomy Foliar glands in the inferior leaf surface at the leaf to petiole (leaf stem) transition are a normal part of Ficus anatomy, and so far, their purpose is not fully understood. They used to be referred to as 'wax' glands, and occur in a high % of the plants in the Moraceae family, including mulberry. Newer literature refers to the gland as a phenolic gland, because of the heavy deposits of phenolic compounds in the glandular region. Any exudates (oozings) that originate in the near vicinity of the gland are probably latex or residuals from same and not related to the gland itself. Ficus leaves often have other semi-regularly spaced white dots, which vary in salience, inside and roughly parallel to leaf margins and often misidentified as pests or glands. They are lithocysts, enlarged cells that contain crystals of calcium carbonate or calcium oxylate called cystoliths, and are another normal part of Ficus anatomy. Al

Watering from the bottom ensures all the dissolved solids in tapwater and fertilizer solutions remain in the grow medium. It can also upset the balance (ratio) of nutrients, one to the others, such that an excess of 1 nutrient makes it hard for the plant to take up enough of another nutrient (called an antagonistic deficiency). A level of dissolved solids (salts) in the soil that is too high, makes it difficult for the plant to move water to all of its parts with normal efficiency. Too, it's best to water slowly from the top, using enough water to fully saturate the soil and allow at least 20% of the total volume of water applied to exit the drain hole, which helps to flush any accumulating salts from the grow medium. The plant is definitely in want of more light. If you have a brighter spot you can acclimate it to over the course of a week to 10 days, it would provide a significantly greater opportunity for your plant to realize a larger measure of its potential, bestowed by Mother Nature. How do you determine when it's time to water the plant? Have you been fertilizing regularly? Nutrients are the building blocks plants use to grow and keep their systems orderly, so it's important when growing in containers that the grower shoulders responsibility for ensuring appropriate nutritional supplementation. Foliage-Pro 9-3-6 is an excellent product for houseplants, and it provides all nutrients required for normal growth, so it's all you need in the way of nutrients. Questions? Al

I would disagree that you can't fertilize with organic fertilizers in pots, however if you are going to do so you need to be diligent about how you care for your tree, use a medium that is appropriate for and encourages the growth of microorganisms, and avoid plastic pots. You also have to be careful not to use anything that can damage your microorganisms. When you use organic growing methods in containers you absolutely have to treat your soil as, as much of an organism as your tree, and I would not recommend it to someone starting out with citrus. (I grow my own trees indoors in a huge window exclusively under lights and use organic methods. I get fruit every year and my trees grow very well.) Reading your responses it definitely sounds like you have a few problems: water, light, potential overfertilization. You don't "feed" a tree the way you would feed a pet, fertilizer is not "food" in that way, but should instead be applied as necessary to replace nutrients depleted from your soil. Indoors, your trees won't deplete nutrients as quickly due to the low light and slower growth, so you don't need to fertilize as often or at all. As for watering, as mentioned above you should let the tree dry out between deep waterings and watch that your soil doesn't stay wet for too long. (For example: self watering planters are death for many indoor plants). As for lamps, the kind of grow-bulbs or nice looking growing lamps are not going to provide you enough lumens to grow a tree. You could probably use them for little plants that require low light, but a tree needs more than that. A high powered LED lamp is going to be your best bet for a citrus tree. There are options for ones you can install in your house or you could hide them in some way, but if you want your trees to do well you need a lot more light than a standard grow light. I hope this was helpful, and good luck.