Welcome, Guest
Username: Password: Remember me
  • Page:
  • 1

TOPIC: black spots on maple

black spots on maple 1 week 11 hours ago #59681

Hello, first time user of this forum. I have a maple bonsai tree, which obviously has some sort of disease. Every May or June I start noticing black spots on leaves. First on few leaves and then in a month or two slowly on all leaves. I try to remove infected leaves, but it does not help. I tried applying some fungicides, but it does not stop. I have tree on my balcony, facing east, has shadowed sun till noon. See attached pictures...

This message has attachments images.
Please log in or register to see it.

  • mersault
  • mersault's Avatar Topic Author
  • Offline
  • New Member
  • New Member
  • Posts: 2
  • Thanks received: 0

Please Log in or Create an account to join the conversation.

Last edit: by mersault.

black spots on maple 1 week 1 hour ago #59697

Hi Mersault,

welcome to the forum.

I am not sure what the problem is. However, your tree in general is not healthy. The big variation in greenness of the leaves indicate a shortage. Do you fertilize? And if so, with what? Or is the soil showing a lot of scale build-up?
  • leatherback
  • leatherback's Avatar
  • Offline
  • Platinum Member
  • Platinum Member
  • Posts: 6819
  • Thanks received: 2685

Please Log in or Create an account to join the conversation.

black spots on maple 6 days 12 hours ago #59704

Thank you for your answer. The color of leaves is not so different as seen on this picture. I fertilize every 2 weeks with generic liquid fertilizer using filtered water (with Brita filters). There are no limescale deposits on ground. Bonsai is potted in pumice soil.
  • mersault
  • mersault's Avatar Topic Author
  • Offline
  • New Member
  • New Member
  • Posts: 2
  • Thanks received: 0

Please Log in or Create an account to join the conversation.

  • Page:
  • 1
Log in Register