This section saves the plants defined in your model area. Contrary to previous formats, plants will not be mixed with buildings in the first section of the input file.
Each plants is defined by its unique two-char ID.
Click here to see an example section

Hint
Don't forget, that planting trees on a roof increases the total height of the model domain a lot!
Make sure that the total vertical extension of the domain is sufficient!
(see also here)