The palms grew faster last year( coming from Florida and being outside during the summer). Now, it takes almost a year for one new frond to unfurl! I suppose they have adjusted to the indoor light. They seem crowded in that small nursery pot, so I do plan to transplant up in the slightly larger pot…and then never again…because it is too large to handle. What is the best time to transplant?

Adonidias don't have a particularly thick trunk, they tend to be more slender. Crowded low light conditions cause palms to grow tall and skinny, which is probably what happened with yours if they are extra skinny. How skinny are yours and do you have photos you could post?

Looks like what might be frizzle top which is caused by a manganese deficiency. Apart from the need for a manganese fertiliser, you should also check the pH of the soil. Higher pH aggravates the situation.

I found out what is happening to my palm trees! At this moment two of the palm trees are down to only the center being green. The rest of the leaves are brown. But one of them is healthier than ever. So I studied the root system and found out that one of the palm trees is completely choking the roots out of the other two. This is why the other palms are dying while one of them is bigger than ever. the problem is, they were planted way to closed to each other, and now that they are older the roots are thicker and the plants were fighting for root space, and one won the fight. i am just wondering, if I cut some of the roots of the other palm could I save them or end up killing the healthy, strong one? has any one has this problem with palm tree trios being too close to each other? hope someone can help!