• Discoloured and Dying Leaves on House Plant

    Two months ago my house plants were attacked by aphids or some similar bug. I sprayed them heavily and religiously with Safer’s Soap, four treatments in 28 days. Now some plants have dead leaves and others have leaves with these…

  • Weeping Spruce

    We live in Toronto (Rosedale) and the soil has a tendency to be Clay like. Our Weeping Spruce was about 8 years ago and does not seems to be happy with branches near the base dying and some slight signs…

  • Ailing Japanese Maple

    I live in mid-town Toronto and have an ailing 30 year old Japanese Maple.  It is a lovely 30 foot plus tree, and it has added to the beauty and charm of my home.  However, in the last while I…

  • Mildew on peony leaves

    My peony leaves got mildew on them and treatment didn’t work. This plant is in a winterized pot and new to me this year. Should I cut off all the leaves and throw them out to reduce chances of the…

  • Leaf Spot

    This is an example of something that has invaded my Joe Pye plants and a new Nannyberry (viburnum). The viburnum looks very bad. The Joe Pyes will come back next year. Is this a fungus, an insect? I cannot seem…

  • Syringa reticulata ‘ivory silk’

    My syringa reticulate “Ivory silk tree has dead branches & wilted leaves. Could this be verticillium wilt? If so, how would I treat it? We are having a very dry summer so is it possible that it needs a good…

  • Pagoda dogwood

    I think it has golden canker- I will trim but is there a spray ?…

  • Risks of removing leaves to peonies

    I read your reply to “white powder on peonies”. To treat a similar mildew, I took the option of snipping leaves instead of using a chemical. However, by the time i was finished, most of the foliage was gone. Then…

  • Small apricot trees growing in pots

    Hello!! I live in Toronto, and I’m trying to grow apricots so I can bring them to our property in Prince Edward county. We started them indoors and eventually, after hardening of course, we brought them to our balcony, but…

  • A mass on my plum tree branches

    Hello. I have noticed that there are masses growing on the branches of my plum tree. Last year someone told me that it might be harmful. I cut all the branches with the masses. This year they all grew back…

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