As you can see, the joya planted in the wall pot said it's "blocked", even if this plant is only 1 tile high.
It also shows the status panel of wild joya, where plants in aero pot of flower pot just "idle".
Steps to Reproduce
Plant a joya in a wall pot as shown in the picture above
Status: Known Issue
We are aware of this issue and have it logged internally but either we do not have a fix ready yet or we are not planning on addressing the issue in the immediate future.