|Sedeveria letizia July 2014|
|Sedeveria letizia May 2015|
So the first method is a simple ruler.
|Arenaria aurea May2015|
In the end I found the solution on one of the plant forums, in which someone placed washers over the terminal spine. So simple.
Now I simply place the washer on the newest leaf at the start of spring and at the end of summer, even if there was no obvious growth, it's possible to see how many new leaves there are.
There have been a few questions about the washers, but a lot less than about the neon nail polish. Does anyone else have strange methods to track the progress of their plants?