The colour agent for Easy Roller is useful because it enables you to tell which trees have already been treated and which are still due, so you do not by accident miss one tree out or treat twice with the Easy Roller.

The colour dissolves naturally and disappears during autumn.

If you need to make the colour last a bit longer, you may add unhomogenised butter milk to your mixture. The butter milk has no effect on the growth regulation; it is solely so that you can see the colour for longer.