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Top Questions About Roses

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Questions About Roses

  • Answered by
    GKH_Susan on
    October 25, 2019
    Certified Expert
    A.

    Here is some advice from our staff rosarian, Stan.

    https://www.gardeningknowhow.com/ornamental/flowers/roses/roses-winter-care.htm

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  • Answered by
    MichiganDot on
    October 25, 2019
    A.

    Roses are hardy plants with only hybrid tea roses needing winter protection. Winter prep starts by withholding fertilizer and not dead-heading after Labor Day so the shrub can gradually shift from flower production to winter prep. No pruning is necessary for shrub roses at this time; always remove dead, diseased or damaged canes as soon as noticed. (Grandiflora roses may require height reduction if in an exposed, windy site.) Water if soil is dry all the way through December: plants that dry out are more susceptible to winter kill. After leaf fall, clean up and remove all plant debris. After the ground freezes, loose mulch may be applied over the crown but this is not necessary except for hybrid tea roses (or if you are on the northern edge of a plant's hardiness zone). Straw, shredded wood mulch and leaves that have been mowed over are good choices. Remove the crown mulch in early spring.

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  • Answered by
    GKH_Susan on
    October 26, 2019
    Certified Expert
    A.

    Only 20 to 30 percent of rose seeds sprout according to our experts, but those that do, grow fairly quickly. Did you give your seeds a cold period first?
    Here are the directions; you can see where you might have differed. If you have more seeds, you can try again.

    https://www.gardeningknowhow.com/ornamental/flowers/roses/growing-roses-from-seed.htm

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  • Answered by
    MichiganDot on
    October 29, 2019
    A.

    Since your roses will be dropping leaves shortly, it doesn't make sense to treat them for black spot at this time. Make sure to clean up all leaves after leaf fall and destroy them. In black spot has been a problem for several years in a row, consider replacing mulch and top one inch of soil early next spring. Also, put your plants on a mildew preventative next spring. It is easier to prevent than cure rose black spot. Prune annually in spring just as leaf buds are starting to swell on the canes. This often coincides with the forsythia blooming. Proper pruning leaves a basic framework but removes many smaller canes. This allows better air circulation and sunlight penetration which, in turn, help prevent black spot. Typical rose bushes are not pruned/cut back in fall. Tall grandiflora roses that receive lots of winter wind should be cut back about 50% to keep canes from whipping around in the wind and rocking the plant base out of the ground. (If your area has high winter winds.) Hybrid tea roses probably need winter protection by mounding shredded bark 4-6 inches over the top of the crown. I've provided links several articles on pruning, winterizing and black spot disease control.
    https://www.gardeningknowhow.com/ornamental/flowers/roses/pruning-roses.htm
    https://www.gardeningknowhow.com/ornamental/flowers/roses/roses-winter-care.htm
    https://www.gardeningknowhow.com/ornamental/flowers/roses/black-spot-roses.htm

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  • Answered by
    GKH_Susan on
    November 3, 2019
    Certified Expert
    A.

    The spores can't survive on bare soil, but will overwinter on plant material. The spores are carried by the wind and splash onto plants when watering. Different rose varieties have different levels of disease resistance, if any, so it more than likely is lack of resistance in the roses in that bed. Plus, you must be diligent to remove infected leaves that drop and also cut back the affected bush. Or the disease continues to the next season.

    Here is more:
    https://www.gardeningknowhow.com/plant-problems/disease/black-spot-fungus.htm

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  • Answered by
    omishash on
    November 2, 2019
    A.

    the soil and overwinter on leaves and stems, waiting for favorable conditions. The spores make contact with the rose by splashing onto it in drops of water.
    https://khandigeorganic.com/

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  • Answered by
    GKH_Susan on
    November 11, 2019
    Certified Expert
    A.

    Since you say twice blooming, I assume you've been through a season with them and have seen them bloom. According to the article below by our resident rose expert, repeat blooming climbing roses can be shaped or trimmed in late winter or early spring. This is assuming the roses bloom on new wood and not old wood. You don't want to cut off any buds. You should be able to see buds forming by now if it does bloom on old wood.

    https://www.gardeningknowhow.com/ornamental/flowers/roses/pruning-climbing-roses.htm

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  • Answered by
    roseman on
    November 23, 2019
    A.

    It is hard to say with certainty from the photos. If you have any local Consulting Rosarians in your area I would ask them to do a garden visit. If not, you could also take a look at the following website and match your photos up to some they have of roses of the same color and habits. Web site: https://www.helpmefind.com/roses/

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  • Answered by
    GKH_Susan on
    November 18, 2019
    Certified Expert
    A.

    Double Delight is a red and yellow hybrid tea rose.
    The Meillend Peace rose is also a hybrid tea.
    Harkness is a rose breeder in England.
    When the roses grow, you will know better what is what. The hybrid teas typically have one rose at the terminal end of the stem, great for cutting. Floribundas have a cluster of roses on each stem. A patio rose has a ball shaped habit on a tall main stem.

    https://www.gardeningknowhow.com/ornamental/flowers/roses/meilland-roses.htm
    https://www.gardeningknowhow.com/ornamental/flowers/roses/different-types-of-roses.htm

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