Pyrethrins for Emerald Cedars


You recently answered my questions regarding my failing Emerald Cedars and you raised the question of the possibility of spider mites and other pests.
On closer inspection, I did discover spider mites and possibly the larva of other pests.
I have since purchased Safer EndAll Concentrate which contains potassium salts of fatty acids and Pyrethrins 0.2%, which I believe is the organic form because EndAll does NOT contain petroleum distillates, making it compliant with organic gardening standards.
Would you kindly confirm that it is safe to use on the cedars, as I am unable to find any information specific to this?
I would like to use it as soon as possible to avoid further and increased infestation.
Thank you


Thank you for your question regarding Safer’s Insecticidal Soap Concentrate.

Yes, the product you have selected meets the organic standard. The company that manufacture this product is called Woodstream, and they have a Canadian customer helpline that may be able to provide you further information about your intended use. Also for further product reference, you may want to use the Pesticides Classification Database from the Ontario Ministry of the Environment and Climate Change.

Always review the manufacturer’s instructions on the label carefully. When using an organic product you have to use it every couple of days to get the same effect as a pesticides which will kill immediately. For greater success, you should also use the product in the evening as this is when you will get more on the pests directly. Spraying the plant material when the pests are not there will mean having to wait for them to eat.

We hope you find this information useful in protecting your emerald cedar trees.