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Leaf spot

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- Thousands of species of fungi, bacteria and viruses cause leaf spots. There are many instances where spots on leaves are just one symptom of a disease which is causing more serious damage elsewhere.

Also be aware that other causes can lead to spots on leaves, including misdirected chemical sprays and air-borne pollutants. If the spots are 'uni-directional' and cover a large range of plants this is likely the cause. In late summer and autumn normal seasonal changes to foliage can be misleading, and some plants such as hydrangeas have spots which are entirely normal.

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Hibiscus plant leaf spots- 2 plants


Both these plants grew beautiful flowers but now seem to have some disease both on leaves and stem.
Their location was changed to another part of the house, when they were brought to original location ,which has more sunlight and where they bloomed many a time, this happened.
Is there a way to treat them

  • Views: 520
  • Replies: 0
  • Posted: Tue. 19th January 2016 01:44

Help - Viburnum tinus - disease

Question from Arjie

I have a number of hedges of Viburnum tinus. They have all been affected by a ghastly leaf spotting disease. Small holes appear on new leaf growth and then the whole hedge gradually becomes affected and turns brown. Have hunted the garden forums for an answer - but can't find anything specific. Would dearly like to treat this disease as I don't want to replace the Viburnum hedges. Have attached two pictures to show the damage.
Thanks to anyone who can help & advise !

  • Views: 880
  • Replies: 0
  • Posted: Tue. 4th August 2015 09:06

Leaf Spot on Photinias

Question from Thelma Wigley

Our two standard photinias and our "little red robin" are affected by leaf spot, exactly as illustrated in the example shown on the site. I would appreciate advice on how to deal with this.

  • Views: 1142
  • Replies: 1
  • Posted: Tue. 8th January 2013 14:46
  • Last reply: Tue. 8th January 2013 18:02

Standard bay leaf spot

Photo from katypoo

my four standard bays have developed leaf spot which i have only just noticed since the snow melted. Could the cold have caused the problem? i have also noticed some on my red robin.
and lastly can i treat it and how. i am not against using chemicals!
thanks in advance

  • Views: 1669
  • Replies: 1
  • Posted: Fri. 7th January 2011 12:22
  • Last reply: Fri. 7th January 2011 14:59