Run for the Roses

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    • Rosa 'Bantry Bay' (pink) and R. 'City of York' (white). Photo by Jean-Marc Grambert.Rosa 'Bantry Bay' (pink) and R. 'City of York' (white). Photo by Jean-Marc Grambert.
    • Rosa ‘Dublin Bay’. Photo by Jean-Marc Grambert.Rosa ‘Dublin Bay’. Photo by Jean-Marc Grambert.
    • Rosa dupontii. Photo by Jean-Marc Grambert.Rosa dupontii. Photo by Jean-Marc Grambert.
    • Rosa canina 'Hibernica'. Photo by Jean-Marc Grambert.Rosa canina 'Hibernica'. Photo by Jean-Marc Grambert.
    • Rosa roxburghii. Photo by Jean-Marc Grambert.Rosa roxburghii. Photo by Jean-Marc Grambert.
    • Rosa 'Thérèse Buguet'. Photo by Jean-Marc Grambert.Rosa 'Thérèse Buguet'. Photo by Jean-Marc Grambert.
    • Rosa 'Pink Grootendoorst'. Photo by Jean-Marc Grambert.Rosa 'Pink Grootendoorst'. Photo by Jean-Marc Grambert.
    • Rosa 'City of York'. Photo by Jean-Marc Grambert.Rosa 'City of York'. Photo by Jean-Marc Grambert.
    • Rosa 'City of York'. Photo by Jean-Marc Grambert.Rosa 'City of York'. Photo by Jean-Marc Grambert.
    •  Rosa  'Golden Wings'. Photo by Jean-Marc Grambert. Rosa 'Golden Wings'. Photo by Jean-Marc Grambert.
    • Rosa  found in Portland, Maine. Photo by Jean-Marc Grambert.Rosa found in Portland, Maine. Photo by Jean-Marc Grambert.
    • Rosa 'James Mitchell';  introduced in 1861. Photo by Jean-Marc Grambert.Rosa 'James Mitchell'; introduced in 1861. Photo by Jean-Marc Grambert.
    • Rosa 'Carefree Wonder'. Photo by Jean-Marc Grambert.Rosa 'Carefree Wonder'. Photo by Jean-Marc Grambert.
    • Rosa 'Graham Thomas'. Photo by Jean-Marc Grambert.Rosa 'Graham Thomas'. Photo by Jean-Marc Grambert.
    • Rosa 'Climbing American Beauty'. Photo by Jean-Marc Grambert.Rosa 'Climbing American Beauty'. Photo by Jean-Marc Grambert.
    • Butterfly landing on  Echinacea purpurea  'Pica Bella' in the Cranford Rose Garden. Photo by Jean-Marc Grambert.Butterfly landing on Echinacea purpurea 'Pica Bella' in the Cranford Rose Garden. Photo by Jean-Marc Grambert.

    Now’s the time to visit the Cranford Rose Garden.The whole collection is in bloom, including the species and old roses (pre-1900 hybrids), most of which only bloom once a season. The repeat-bloomers that make up the rest of the collection are also at their best. “They’ll stay in bloom for about three or four more weeks, though. Then the whole garden will take bit of a rest in July and August, and then the repeaters will bloom once more in September,” says Sarah Owens, curator. “That second flush won’t be quite like this, though it will still be pretty nice.”

    It’s also a good time to see the latest stage of the Cranford’s restoration and push toward ever-more sustainable practices, says Owens. She’s used only organic sprays since 2009, but wants to minimize even those treatments moving forward. “Even organic sprays end up killing insects that you’d like to have around, so the less, the better,” she says. This year, she’ll try to identify the rose varieties most susceptible to disease so she can replace many of them with more resistant ones. Some historic cultivars will be preserved, but with careful placement, Owens hopes to keep reducing the total spraying needed.

    That will allow beneficial insects like aphid-eating lady beetles and predatory mites (which attack pest mites) to thrive. Microbes, bacteria, and fungi that contribute to healthy soil will also flourish, as will earthworms, which convert organic matter to humus and aerate the soil. BBG is also in the process of installing a new drip irrigation system in the Cranford. “That’ll reduce overall water use since we’ll loose less to evaporation and run-off. It will also help keep foliage dry, which will go a long way toward keeping funguses like black spot in check. So again—less spraying.”

    Interplanting with annuals and perennials like catmint (Nepeta) and red catchfly (Silene dioica) also makes the garden more hospitable to helpful bugs by providing nectar and shelter so they can complete their life cycles and reproduce. “There’s a big web of life involved in a healthy rose garden. We want to find just the right balance then let nature take its course,” says Owens.


    Comments

    June 11, 2012
    Steven Rosen

    I love the idea of gardening more sustainably, but the rose garden looks pretty pathetic this year. Is there some kind of blight or infestation? Is it caused by the shift in horticultural practice?


    June 12, 2012
    BBG Staff

    Hi, Steve:
    The vast diversity of the rosebushes in the Cranford Rose Garden means that not all the plants are in bloom at any given moment. Some flower only once a year, some bloom in late spring and again in late summer, and some blossom nearly continuously until fall.

    This being said, BBG’s rose collection is indeed slowly recovering from an infection of rose rosette disease, described in a Garden News post last year: “Restoration of the Cranford Rose Garden.” This mysterious blight destroyed thousands of rosebushes, and it will take several years before the garden is totally reinvigorated. Hundreds of specimens have been replaced, and new plants are regularly added to the collection. In the meantime, visitors can look forward to several lovely flushes of bloom this season.



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