• Nematodes

    Question:Can you recommend a plce where I can purchase Nematodes in Toronto? Many thanks

  • Rhizosphaera needle cast on Spruce trees

    I'm hoping that someone in your group could give us some advice. Our blue spruce trees (7-8 years old in zone 5 just north of Toronto) have been affected by Rhizosphera (black spots on needles detected with a ...

  • Schefflera black spots and leaf drop

    Hi there, I have a beautiful big Schefflera plant that I bought two months ago. It had some leaf drop which initially I thought was adjustment to the new location, but since then it has developed ...

  • New weed type

    I have this very annoying weed in only one flower bed (where I added mulch). It has very deep roots so is almost impossible to dig up as even when I dig down it tends to break off. What it does is ...

  • Autumn Joy Sedums

    I have 2 large sedums that are flourishing in my southern facing garden. I cut the plants back each winter and they come back each year with a huge number of healthy looking flower buds that are starting ...

  • Rose of Sharon- Woolly Aphids

    Follow up to my question: "Every year a couple of branches die in my Rose of Sharon. The rest of theshrub look happy and flowers. The sick branch wilts and dies and does not come back. Any ...

  • Euonymus Tree Rejuvenation?

    I live in Barrie, ON. I have a euonymus tree that is not doing well this year at all. It did have some green leaves and new growth in the spring, but those have since shriveled and fallen ...

  • Japanese maple – Leaves drying up and curling

    Moved in last year and nursed a Japanese maple back to health and now the leaves are drying and curling up at the ends. Reason?  

  • Zinnias and powdery mildew

    The zinnias I planted were doing very well but have developed some white dusty leaves and aren't looking as healthy. What am I doing wrong? Over-watering? Is this mould?

  • Curculio

    Hello, I'm looking for tactics I can use against curculios attacking my Walnut trees (black walnut, English walnut, and heartnut). The weevil lays eggs into developing nutlets and new growth. I pick up aborted nutlets and prune off infected foliage to ...

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