• Polemonium caeruleum- Jacob’s Ladder

    Hello, my Polemonium caeruleum which has only been planted for a few weeks has developed white spots on its top leaves. Could I be watering it too much?

  • Alien Invasion

      The plant in the attached picture is slowly taking over my garden. I don't know what it is, and it seems to choke out the plants I want to keep. Any ideas ...

  • Japanese Maple

    The leaves of my 20 year old Japanese maple are curling up, and on one branch they are dried out completely. On other leaves there is speckling. Do you know what causes this, is it worrisome, and ...

  • Yellowing Baltic Ivy

    I am in the beaches part of Toronto. We have had baltic ivy growing over our front garden wall for over 15 years. It is a very sunny exposure yet lately I am finding many leaves going yellow ...

  • Ailing Carolinian Red Bud

    Hi....I live in Toronto, and last Fall I planted a Red Bud ( white blooms ) in my backyard in a part shade location. It is close to 10ft tall, and survived the winter and bloomed. After ...

  • Tree Leaves Yellowing

    I have a two fold question. First, I have no idea what this tree is so have only been able to perform limited searching. Second, it is sick with something, possibly a fungus? For a couple years ...

  • Plant Identification- Nightshade

    Hello, I have these plants pop up from the containers that filled with compost. Could you please tell me if it is edible or a weed. Thanks a lot.

  • Tree of Heaven

    Hi there: We have this tree in the backyard and we are not sure if we should let it thrive. When it started growing (on its own) we thought it was a sumac and we were fine with that. But ...

  • Use of Systemic Pesticide – Imidacloprid – to treat mealybugs on cacti

    I have an extensive cacti collection with some almost 20 years old. They spend the summer outside and the winter they are dormant in the basement. This past winter the mealybugs got out of hand, and while I ...

  • Boxwood Problems

    In our small garden in central Toronto, several boxwood bushes are getting discoloured, dry leaves. Some have visible insects, especially on underside of leaves. A photo is attached. How can I deal with these problems? A photograph is ...