|hello--Ihave a royal tomentosa tree still very young. brown spots starting covering the leaves.through search I found the problem name but nowhere does it say what to use to cure the problem.The problem name is phyllosticta paulowniae.Any info on how to take of this problem would be a big help thanks
|Answer from NGA
October 13, 2009
|Your Empress Tree or Paulownia, is susceptible to a fungal leaf spot (phyllosticta paulowniae) which can be prevented with fungicide sprays in the spring when the new leaves are unfolding. After the flowers are spent and just as the new leaves are opening you can spray with an all purpose garden fungicide. Don't spray when the flowers are new and attracting insects - wait until the petals are beginning to fall from the flowers - then spray the new leaves with a fungicide to protect them from the disease. You can rake up the old fallen leaves to remove the spores from the garden. Hope this clarifies things for you!
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