Brown spots on Arbutus Andrachnoides | Love The Garden

Brown spots on Arbutus Andrachnoides

Brown spots on Arbutus Andrachnoides

Asked 1 year 7 months ago by Arbutuslover

I have and ARBUTUS ANDRACHNOIDES tree in my garden which I imported from Italy in 2013. It is about 13 feet tall. It became infected with small brown spots on most of its leaves during the winter of 2014/15. About April of this year I researched this on the internet and the advice seemed to be to remove all infected leaves and burn them. This is did leaving 20 healthy leaves. I also used some old “BENLATE” Sachets I had as a root drench. (I don’t think this product is allowed any longer.) The tree very quickly covered itself in beautiful new leaves and looked healthier than it had been when I imported it. I also removed many branches of a climbing rose which had blackspot, which were very near to the leaves of my Arbutus.

I am sorry to say but it is gradually becoming infected with the brown spots again. I saw one of your products being advised by the RHS as something which might help. It is called TRITICONAZOLE Liquid Concentrate. I chose this one because the RHS advise not to use one with an insecticide unless there is a problem with them. It has never had a problem with insects. Can you advise me if you think your product will work, where it is available in Dublin, Ireland etc.

Thanking you in anticipation, for your help in hopefully sorting out my problem.

Yours sincerely,

Patrick Glynn.

 

Answers

Vicky Page's picture
Vicky Page

Further treatments

Posted 20 Oct 2016

Hi Patrick, 

As you have Aphid damage too I would suggest you incorporate the use of RoseClear Ultra - it's not just for roses. 

This contains the same fungicide as FungusClear Ultra but also has an insecticide in there to tackle to aphids. You can use this in conjunction with FungusClear Ultra to help extend the time of use.. So use FungusClear - then RoseClear - Then FungusClear  etc so you can treat the plant for longer in the year. 

Make sure your Arbutus is not too compacted... you need good airflow through the plants branches to help prevent diseases establishing. If there are any plants crowding it, prune them back a bit to give it some space. 

Hope that helps :)

Login or register to recommend this comment
Arbutuslover

 

Posted 19 Aug 2016

 

Hi Vicky,

           I tried the Fungus Clear Ultra as you recommended. The results were very impressive and soon my tree was once more covered with healthy new leaves.  I didn’t realise I had to re-apply it again after 2 weeks.  I realised my error but not until  4 weeks had passed but then I sprayed it again.  I then noticed that there was a lot of Aphid damage to be seen on the leaves.  Not the usual infestations with which one is familiar but individuals, mostly the flying ones. They seem to have been attracted by the beautiful tender young leaves. 

 

        In an effort to help your product I totally removed an old climbing Rose immediately behind it which I thought might have been attracting the Aphids 

 

        It seems that where the Aphids had been active, tiny brown spots began to appear.  I realised that the fungus was being spread by these Aphids. Very soon after, the large brown fungus spots reappeared. I tried your product once more but to date, I have had to cut off and burn lots of badly infected leaves again. 

 

        Following the instructions on the box I find I shouldn’t use the product more than 5 times in one year.  From my experiences so far, this wouldn’t be enough to control the Fungus on my tree.  As you know the Arbutus is evergreen and I am dreading the Winter when I will be unable to spray it either because I will have exceeded its quota or the Winter weather may not allow me to do it.

 

        I am so sad about this. It had been covered with beautiful healthy leaves and is now just beginning to produce its Flowers.

 

         Do you have any further advice to offer, or must I just let the Fungus get so bad the Tree will eventually die.

 

                   Many thanks for your help with this matter.

        

                        Sincerely,  Patrick

 

 

 

Login or register to recommend this comment
Vicky Page's picture
Vicky Page

Fungus Clear Ultra

Posted 10 Dec 2015

Hi Patrick, 

Yes, Fungus Clear Ultra is very good for preventing the spread of leaf spots, in general you won't 'cure' and already infected leaf, but you can prevent it spreading. Keep an eye on your Arbutus and as the new leaf buds open start spraying and continue at the application intervals advised on pack.  Make sure you clean up all diseased leaves and burn them, and sterilise your pruning tools after use to prevent inadvertently spreading the spores. 

TP Welehans will be able to tell you where they have distributed to in your area. 

Good Luck!

 

Login or register to recommend this comment
X

Subscribe to our newsletter

Subscribe to free garden tips and advice now. (No spam, we promise).