JoeLewko wrote:what could i do against mildew?
Mostly this is due to overwatering, Does your tree get good ventilation/air circulation? Does the surface of your soil/moss stay wet all the time
? [IE: It never gets a chance to dry out on top.]
Solution A.] As stated: Remove the moss. The simplest way- And best for your tree.
Solution B.] Remove the moss, There is no sense in insisting on doing it the hard way. This is what is best for your tree.
Solution C.] Google up some fungicides and run down to the nearest garden center and get them.
Keep in mind that this problem will not go away until
you sort out the watering.
Also, during the process of temporarily 'band-aiding' the problem you will be subjecitng your tree to un-needed chemicals. This is not
what is best for your tree.