STOP all ferterlizing until the plant is growing in earnest. It wont grow much at this time of season, the sun is very low ---the winter solstace, the shortest day of the year is approaching....and after that takes its time to resume what plants prefer. Wait until mid February/March to resume feeding. NEVER feed a sick plant, that only exasperates the problem. Put your plnats into good light...even direct sun but be careful about how the sun comes through the window glass...it can burn even in winter. Don't allow it to touch the window glass...its too cold and the leaves will feel it. WAter to drainage, dump the excess after 5 - 10 minutes...allow the plants to dry down somewhat...but rely on how the plant prefers its soil...dry somewhat or damp. Allow the water to sit overnight to gain room temperature and allows somewhat some of the fluorine to dissipate out of the water. Dracaena especially does not like fluorinated water. For this plant you are directed to use another source than out of your taps. Bottled water, or melt some snow, is preferred and let it gain room tempeature. The reason for this is tap water has a certain amount of salts in it. Dracaena reacts to such salts very quickly. So over time, as you water it, the plant is taking up such salts and soon will show its effects. Fertilizer you gve the dracaena should not have the ingredient "superphosphate" in it. Like the tap water, the plant reacts to such phosphurus source. Generally, plants suffer from overwatering more than all other causes combined. So let your plant dry down between waterings and always, water to drainage, dumping the excess after 10 minutes. STOP all fertilizing until the plant resumes its health. Never think to give it a pinch. Give it nothing but good care and warm sunshine....and STARVE IT.

That looks like scale. I have a lot of the exact plant and had to remove some leaves because I asked same question and that's what I was told

Otherwise known as Devils Ivy...Right? If so, what do you use for a trellis? Did you buy something, make something? Mine isn't all that big, but I don't want it hanging over the pot (I have cats). Right now I'm using a marshmallow metal roaster thing...and a small Bamboo curved trellis.

It's bark. Cambium is a layer of actively dividing tissue sandwiched between the xylem and the phloem in the stems and roots of plants. As this layer grows and divides, the inside cells become the xylem whereas the outside cells become the phloem. Successive divisions produce what is known as secondary phloem. This is where the bark begins. On the outside of this secondary phloem are three rings of tissues collectively referred to as the "periderm." As a layer of cells called the "cork cambium" divides, the outer layer becomes cork. These cells die as soon as they are fully developed. I's a normal part of your plant's morphology. Al