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Top Questions About Roses

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Questions About Roses

  • Answered by
    MichiganDot on
    May 6, 2018
    A.

    First, carefully examine the rose for cankers, mites, thrips and sign of foliar disease. If these check out, I would remove the rose from the planter. Examine the roots for rot -anything mushy or obviously off kilter. There are several fungal diseases that can cause root rot as can overwatering. I would go so far as to remove and replace all potting mix in the pot. If there is a lot of root rot, use a hose or large bucket of water to remove the soil from the roots; it is probably contaminated. Trim off any bad roots, reset the rose, water it in and add long-acting fertilizer. Create shade or move the plant to a shady location for a few days while the plant settles in.

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  • Answered by
    Downtoearthdigs on
    May 7, 2018
    A.

    Depending on the type of weed. Sometimes the mulch can smother out the weeds. I would say though that removing the weeds is the best way to ensure that your garden stays clean and keeps the weeds from spreading.

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  • Answered by
    MichiganDot on
    May 8, 2018
    A.

    The ideal time to transplant a rose is late in the dormant season prior to spring pruning time. It is much less stressful to the plant. It can be done in summer, if necessary but requires diligent follow up. I found this article on transplanting in the summer. http://www.ncnhdistrict.org/aom/myths.html

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  • Answered by
    Downtoearthdigs on
    May 9, 2018
    A.

    This article will help you.
    https://www.gardeningknowhow.com/ornamental/flowers/roses/black-spot-roses.htm
    Neem Oil would be safe around pets.

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  • Answered by
    MichiganDot on
    May 8, 2018
    A.

    Remember when using styrofoam rose cones was popular? A fall trim was necessary to get cones to fit tender hybrid teas. You are correct that fall pruning before dormancy stimulates new growth that is likely not to make it through the winter It is recommended to trim or otherwise secure grandiflora canes that are subject to strong winter winds. Wind causes the base to rock as canes blow back and forth. Rocking may cause the rose to heave and in extreme winds, possibly break some roots. Theoretically, trimming after the plant goes dormant in late fall won't spur new growth; however, the rose can't heal pruning wounds when dormant. Disease risk increases. So continue your practice of early spring pruning.

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  • Answered by
    roseman on
    May 11, 2018
    A.

    You may not need to. I would ask for a breakdown and the NPK rating for their applications. This way you can be sure what they are getting. Giving the rosebushes some kelp meal and alfalfa meal (1/2 cup of each) twice a year would likely be good to do. Work the meal into the soils lightly and water it in. I would apply one then wait a couple weeks and apply the other.

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  • Answered by
    Ali.public7 on
    May 17, 2018
    A.

    Thx for answering.i think pesticide burn is reason

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  • Answered by
    roseman on
    May 11, 2018
    A.

    It looks like either water is setting on the leaves too long and the sun is perhaps burning the tips of the roses. Or perhaps a spray of some kind is setting on the edges of the leaves too long and thus burning the tissues. This could be water, fungicides, insecticides or miticides. If it were dogs or cats peeing on the foliage the reactions would be worse and more devastating. Since I do not see any typical insect markings, I believe it is one of the above. I have seen damage similar to this before when pesticides have been applied on cloudy days and the product did not air dry properly and hung around in the liquid form too long. If you have a lawn watering system that gets water on the roses foliage during the hotter times of the day, that could be it. But the pesticide burn is more likely from the photos. Thanks for sending the photos, that really helps!

    Stan The Rose Man
    Master Consulting Rosarian - ARS/RMD

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