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Lori from Bellingham writes

Can Garden Tech Daconil Fungicide Concentrate be used to treat rust on St. John's wort?

Answer:

The Garden Tech Daconil Fungicide Concentrate is labeled for use on flowers and for rust and other diseases. The product shouldn't harm the flowers but since all variables cannot be accounted for and not all species have been tested and listed on the label, you can test a small area first to watch for any negative effects from its use. Fungicides are often applied every 14 days and you would use 2 1/4 teaspoons per gallon of water for ornamentals. View the full product label for more information. 

Answer last updated on: 05/02/2023

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