• Black Walnuts Popping Up All Over The Place

    Dear Master Gardeners, I’m a volunteer gardener at my Toronto apartment building. The problem that I’m going to tell you about is situated in a large concrete planter which hugs the side of my building; the planter is quite large;…

  • Black Walnut Resistant Grass

    Hi, I have a shady back yard that is pestered by a Black Walnut tree on my neighbors yard. I am looking for suggestions of what grass I could grow that would survive albeit some additional tlc. I read this…

  • planting under black walnut

    I understand redbud can be planted under black walnut. Can a weeping redbud work, knowing it is grafted on another type of tree, will the graft take the blackwalnut as well. If garden is on hill will this help with…

  • Serviceberry and Juglone

    A previous Q&A states that Serviceberries are sensitive to juglone even though they are a native species. There is a lot of conflicting info on the web. My 20 yr. old Serviceberry is about 25 ft from my neighbour’s black…

  • Black walnut and raspberries

    My neighbours have a 35 ‘ Black walnut (Juglans nigra) tree that I believe is affecting my once flourishing raspberry patch, which has been in decline for about 8-10 years. Is this tree the likely cause for the decline and…

  • non blooming tree peony

    I live in North Toronto (Lawrence and Mt Pleasant) so zone 5? I have a tree peony in mid to late morning sun (almost full sun before a large black walnut leafs out. It’s situated along the edge of a…

  • Transplanting Flowering Dogwood Ornamental Tree

    Hello! I planted my Dogwood 2 yrs ago beneath a large Black Walnut tree. It flowered the 1st year. No flowers the 2nd year. The 3rd year, I thought it was dead but, just recently, it started to show some…

  • What can I grow with Tree of heaven and Black Walnut?

    We are in Toronto, with a space that has areas of full sun, part sun/shade, and full shade. Our back yard has about 80% coverage by tree of heaven roots. I’ve accepted that I must just continue pulling root systems…

  • Black Walnut lots of shade my lawn won’t grow.

    I am thinking of putting in clover. I’ve tried all sorts of grass but the massive black walnut in my backyard seems to be killing off everything. Would you recommend clover as a solution? If so what kind? Also how…

  • Using sawdust in vegetable garden as mulch?

    I would like to get some info on using the sawdust and wood shavings on my garden this year as mulch or working into the ground in early spring. Would putting a lot of this down kill the weeds and…

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